From rspiel at gmx.net Mon Mar 2 05:58:08 2026 From: rspiel at gmx.net (rspiel at gmx.net) Date: Mon, 2 Mar 2026 13:58:08 +0000 Subject: [Qgis-user] Convert geocentric x, y, z to projected coordinates In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: From rspiel at gmx.net Mon Mar 2 07:04:54 2026 From: rspiel at gmx.net (Roland Spielhofer) Date: Mon, 2 Mar 2026 15:04:54 +0000 Subject: [Qgis-user] Convert geocentric x, y, z to projected coordinates In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: From andreaerdna at libero.it Mon Mar 2 09:05:53 2026 From: andreaerdna at libero.it (Andrea Giudiceandrea) Date: Mon, 2 Mar 2026 18:05:53 +0100 Subject: [Qgis-user] Convert geocentric x, y, z to projected coordinates Message-ID: <22812105-49bd-4d08-aa84-80cae250874a@libero.it> Hi Roland, as you can see in the screen recording video at https://www.youtube.com/watch?v=bms4-w2UiQk , the crash doesn't occur on my system using a delimited text file containing the provided single point's coordinates. I've now tried with multiple fake points' coordinates and the crash actually occurs also on my system. I'm not sure how to avoid the crash using the custom function for multiple points' coordinates. Anyway, it is still possible to perform the transformation using pyproj in QGIS using a simple PyQGIS script in the Python console available at https://gist.github.com/agiudiceandrea/f8031057b196fd7e3fb67249336a9733 You just need to import the delimited text file as before and select such layer in the Layer tree, then open the Python Console, show the Editor and past the script inside the Editor and then Run the script: a new ESPG:25833 point layer will be created from the EPSG:7914 x, y and z coordinates contained in delimited text layer. Regards. Andrea Il 02/03/2026 14:58, rspiel at gmx.net ha scritto: > However, QGIS crashes when firing the command. From Werner.Isenmann at rpf.bwl.de Tue Mar 3 03:32:18 2026 From: Werner.Isenmann at rpf.bwl.de (Isenmann, Werner (RPF)) Date: Tue, 3 Mar 2026 11:32:18 +0000 Subject: [Qgis-user] Cluster symbol renderer: Point Clustering only with identical coordinates Message-ID: <163bce310e2b43349e2571a96d166f0b@rpf.bwl.de> Hello all, I'd like to configure the cluster symbol renderer so that clustering only is active for Points with identical coordinates. Could anyone give me a hint, how I can manage this? Unfortunately I didn't find the solution (tryed with @cluster_size etc.). I use A marker Symbol wie font marker and simple marker combined: [cid:image006.png at 01DCAB09.C5B7BA80] Kind regards, Werner -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image006.png Type: image/png Size: 4362 bytes Desc: image006.png URL: From rspiel at gmx.net Tue Mar 3 06:27:16 2026 From: rspiel at gmx.net (Roland Spielhofer) Date: Tue, 3 Mar 2026 14:27:16 +0000 Subject: [Qgis-user] Convert geocentric x, y, z to projected coordinates In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: From james.burley at asc-csa.gc.ca Tue Mar 3 09:00:03 2026 From: james.burley at asc-csa.gc.ca (Burley, James (ASC/CSA)) Date: Tue, 3 Mar 2026 17:00:03 +0000 Subject: [Qgis-user] Raster Calculator Miscalculations - User error or bug? Message-ID: NON CLASSIFI? / UNCLASSIFIED Hello to the QGIS user's community, I'm a planetary scientist working for the Canadian Space Agency who is working with lunar south pole data. I'm struggling with an issue when running a simple multiplication raster calculation that I've included below (sorry for vague layer names, data is not public): "Layer1" * "Layer2" * "Layer3" * "Layer4" * "Layer5" * "Layer6" The output raster is set to the spatial resolution of the highest resolution layer, as I'm trying to gather contextual data from coarser datasets at very specific locations. Most cells are calculated correctly, but many cells (<10-20%) are miscalculated to the tune of 10-30% of the expected value (sometime values are calculated lower than they should be, sometimes higher. Even when the highest spatial resolution cell is fully contained within a single cell in all other layers (no overlapping cell boundaries that might lead to different resampling values under a nearest neighbour protocol), the calculated value can still be incorrect. I'm running QGIS 3.44.7, my system is using an i7-1265U with 32 gb of ram. The rasters are large, 5000x5000 cell 32-bit float Geotiffs. All are using the same coordinate system (ESRI:103878 - Moon_2000_South_Pole_Stereographic). I've exported the input layers so I can run the same calculation in ArcPro, and the cells are all calculated correctly. Not sure if that helps narrow down the issue. Cheers, James -------------- next part -------------- An HTML attachment was scrubbed... URL: From yoelf1414 at gmail.com Tue Mar 3 09:46:18 2026 From: yoelf1414 at gmail.com (yoel flores) Date: Tue, 3 Mar 2026 12:46:18 -0500 Subject: [Qgis-user] Raster Calculator Miscalculations - User error or bug? In-Reply-To: References: Message-ID: Utilizar la herramienta SCP, dentro de ella, reproyectar bandas raster El mar, 3 de mar de 2026, 12:02 p. m., Burley, James (ASC/CSA) via QGIS-User escribi?: > NON CLASSIFI? / UNCLASSIFIED > > Hello to the QGIS user?s community, > > > > I?m a planetary scientist working for the Canadian Space Agency who is > working with lunar south pole data. I?m struggling with an issue when > running a simple multiplication raster calculation that I?ve included below > (sorry for vague layer names, data is not public): > > > > ?Layer1? * ?Layer2? * ?Layer3? * ?Layer4? * ?Layer5? * ?Layer6? > > > > The output raster is set to the spatial resolution of the highest > resolution layer, as I?m trying to gather contextual data from coarser > datasets at very specific locations. > > > > Most cells are calculated correctly, but many cells (<10-20%) are > miscalculated to the tune of 10-30% of the expected value (sometime values > are calculated lower than they should be, sometimes higher. Even when the > highest spatial resolution cell is fully contained within a single cell in > all other layers (no overlapping cell boundaries that might lead to > different resampling values under a nearest neighbour protocol), the > calculated value can still be incorrect. > > > > I?m running QGIS 3.44.7, my system is using an i7-1265U with 32 gb of ram. > The rasters are large, 5000x5000 cell 32-bit float Geotiffs. All are using > the same coordinate system (ESRI:103878 - > Moon_2000_South_Pole_Stereographic). > > > > I?ve exported the input layers so I can run the same calculation in > ArcPro, and the cells are all calculated correctly. Not sure if that helps > narrow down the issue. > > > > Cheers, > > James > > > _______________________________________________ > QGIS-User mailing list > QGIS-User at lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > -------------- next part -------------- An HTML attachment was scrubbed... URL: From nevillejbrookes at sky.com Tue Mar 3 10:14:36 2026 From: nevillejbrookes at sky.com (nevillejbrookes at sky.com) Date: Tue, 3 Mar 2026 18:14:36 -0000 Subject: [Qgis-user] MMQGIS Plugin failing to load References: <000401dcab39$98082b30$c8188190$.ref@sky.com> Message-ID: <000401dcab39$98082b30$c8188190$@sky.com> Hi User Info support. I am unable to load the MMQGIS plugin. I've tried many different solutions I found online but I still get the same message. I am running Windows 11 operating system. QGIS version 3.44.7-1 The error message I get is: Any ideas how I can solve this issue? Neville -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 80711 bytes Desc: not available URL: From andreaerdna at libero.it Tue Mar 3 14:58:39 2026 From: andreaerdna at libero.it (Andrea Giudiceandrea) Date: Tue, 3 Mar 2026 23:58:39 +0100 Subject: [Qgis-user] MMQGIS Plugin failing to load Message-ID: <3e4877e2-e9fc-450c-bc65-3e00215b9fa1@libero.it> Hi Neville, please see a previous message https://lists.osgeo.org/pipermail/qgis-user/2026-February/056123.html about the same question. Regards. Andrea > nevillejbrookes at sky.com nevillejbrookes at sky.com > Tue Mar 3 10:14:36 PST 2026 > Hi User Info support. > > I am unable to load the MMQGIS plugin. From tonyd at caltech.edu Wed Mar 4 10:49:01 2026 From: tonyd at caltech.edu (Diaz, Tony A.) Date: Wed, 4 Mar 2026 18:49:01 +0000 Subject: [Qgis-user] Install QGIS for Mac for beginners In-Reply-To: References: Message-ID: Hello, is QGIS available for MacOS? I remember seeing a simple installer for Mac. We are looking for simple installation, the only thing we could find was this: https://qgis.org/resources/installation-guide/#mac-os-x--macos Some of our users may not know anything about "MacPorts." Has QGIS gone away with the simple one click download for Mac?? Thanks, Tony From williams.dwight at gmail.com Wed Mar 4 10:53:40 2026 From: williams.dwight at gmail.com (Dwight Williams) Date: Wed, 4 Mar 2026 13:53:40 -0500 Subject: [Qgis-user] Install QGIS for Mac for beginners In-Reply-To: References: Message-ID: Yes. I have it ready to use right now. Dwight Williams http://web.ncf.ca/ad696/ https://dewline.dreamwidth.org/ On Wed, Mar 4, 2026, 1:50?p.m. Diaz, Tony A. via QGIS-User < qgis-user at lists.osgeo.org> wrote: > Hello, is QGIS available for MacOS? I remember seeing a simple installer > for Mac. We are looking for simple installation, the only thing we could > find was this: > https://qgis.org/resources/installation-guide/#mac-os-x--macos > > Some of our users may not know anything about "MacPorts." > > Has QGIS gone away with the simple one click download for Mac?? > > Thanks, > > Tony > > > > _______________________________________________ > QGIS-User mailing list > QGIS-User at lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > -------------- next part -------------- An HTML attachment was scrubbed... URL: From senhor.neto at gmail.com Wed Mar 4 12:31:21 2026 From: senhor.neto at gmail.com (Alexandre Neto) Date: Wed, 4 Mar 2026 20:31:21 +0000 Subject: [Qgis-user] Cluster symbol renderer: Point Clustering only with identical coordinates In-Reply-To: <163bce310e2b43349e2571a96d166f0b@rpf.bwl.de> References: <163bce310e2b43349e2571a96d166f0b@rpf.bwl.de> Message-ID: Using maximum distance to zero won't work? A ter?a, 3/03/2026, 11:39, Isenmann, Werner (RPF) via QGIS-User < qgis-user at lists.osgeo.org> escreveu: > Hello all, > > > > I?d like to configure the cluster symbol renderer so that clustering only > is active for Points with identical coordinates. Could anyone give me a > hint, how I can manage this? > > Unfortunately I didn?t find the solution (tryed with @cluster_size etc.). > > > > I use A marker Symbol wie font marker and simple marker combined: > > > > Kind regards, > > Werner > _______________________________________________ > QGIS-User mailing list > QGIS-User at lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image006.png Type: image/png Size: 4362 bytes Desc: not available URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image006.png Type: image/png Size: 4362 bytes Desc: not available URL: From andreaerdna at libero.it Wed Mar 4 14:59:08 2026 From: andreaerdna at libero.it (Andrea Giudiceandrea) Date: Wed, 4 Mar 2026 23:59:08 +0100 Subject: [Qgis-user] Install QGIS for Mac for beginners Message-ID: <1f8d9f88-4f5f-4345-98b0-1d9526458a8d@libero.it> > Diaz, Tony A. tonyd at caltech.edu > Wed Mar 4 10:49:01 PST 2026 > Hello, is QGIS available for MacOS? I remember seeing a simple installer for Mac. We are looking for simple installation, the only thing we could find was this: https://qgis.org/resources/installation-guide/#mac-os-x--macos Hi Tony, in the page you linked in your message it is explained that: "Official All-in-one, signed and notarized installers for macOS can be downloaded from the QGIS download https://qgis.org/download/ page." In fact, you could find all-in-one, signed and notarized dmg installer for macOS in the QGIS Download page at https://qgis.org/download/ just selecting the macOS operative system. Regards. Andrea From ni_hao88 at hotmail.com Sun Mar 8 17:44:04 2026 From: ni_hao88 at hotmail.com (ni hao) Date: Mon, 9 Mar 2026 00:44:04 +0000 Subject: [Qgis-user] display SAR images Message-ID: Hi list, I am new to QGIS. When I load a SAR image (such as RCM's product.xml) into QGIS, the image gets resampled into square pixels, and in horizonal/vertical grids. Is there a way to keep SAR's slanted display, and keep the pixel size? Thank you. -------------- next part -------------- An HTML attachment was scrubbed... URL: From vukovicvl at fiberq.net Mon Mar 9 10:31:14 2026 From: vukovicvl at fiberq.net (vukovicvl@fiberq.net vukovicvl@fiberq.net) Date: Mon, 9 Mar 2026 18:31:14 +0100 (CET) Subject: [Qgis-user] display SAR images In-Reply-To: References: Message-ID: <343067095.2180206.1773077474772@privateemail.com> Hi, Yes, but usually not in standard QGIS map display. QGIS displays the SAR file in map coordinates, so it resamples the original slanted radar geometry into a regular square-pixel grid. That is why the image looks horizontal/vertical. To keep the original SAR slanted appearance and native pixel spacing, you generally need to view it in its native geometry using SAR software such as ESA SNAP, rather than as a geocoded raster in QGIS. Best regards, Vladimir > On 03/09/2026 1:44 AM CET ni hao via QGIS-User wrote: > > > Hi list, > > I am new to QGIS. When I load a SAR image (such as RCM's product.xml) into QGIS, the image gets resampled into square pixels, and in horizonal/vertical grids. > > Is there a way to keep SAR's slanted display, and keep the pixel size? > > Thank you. > _______________________________________________ > QGIS-User mailing list > QGIS-User at lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > [FiberQ] Vladimir Vukovi? Author of FiberQ vukovicvl at fiberq.net mailto:vukovicvl at fiberq.net fiberq.net https://fiberq.net +381 60 426 2012 tel:+381604262012 -------------- next part -------------- An HTML attachment was scrubbed... URL: From etienne.lerch at gmail.com Tue Mar 10 01:59:40 2026 From: etienne.lerch at gmail.com (Etienne Lerch) Date: Tue, 10 Mar 2026 09:59:40 +0100 Subject: [Qgis-user] Help : QGIS LTR on Fedora 43 Workstation Message-ID: <60943c11-3899-4078-a540-ccc119f728b9@gmail.com> Hi, I'd like to use the QGIS LTR version on Fedora 43 Workstation but I can't find anyway to install it, neither as a rpm package nor a flatpak. How to proceed ? From rdmailings at duif.net Tue Mar 10 03:03:13 2026 From: rdmailings at duif.net (Richard Duivenvoorde) Date: Tue, 10 Mar 2026 11:03:13 +0100 Subject: [Qgis-user] Help : QGIS LTR on Fedora 43 Workstation In-Reply-To: <60943c11-3899-4078-a540-ccc119f728b9@gmail.com> References: <60943c11-3899-4078-a540-ccc119f728b9@gmail.com> Message-ID: Isn't QGIS packaged in the epel repo? (or is the RHEL/EPEL GDAL issue still a going on?) For what I know you get 3.44.7 from flatpak https://github.com/flathub/org.qgis.qgis/blob/master/org.qgis.qgis.json#L44 3.44 is current LTR isn't it? It can/will probably be updated to 3.44.8. In the issue I see there has been discussion about packaging 2 branches. But the discussion seems not very fruitfull. Regards, Richard On 2026-03-10 09:59, Etienne Lerch via QGIS-User wrote: > Hi, I'd like to use the QGIS LTR version on Fedora 43 Workstation but > I can't find anyway to install it, neither as a rpm package nor a > flatpak. How to proceed ? > _______________________________________________ > QGIS-User mailing list > QGIS-User at lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user From etienne.lerch at gmail.com Tue Mar 10 03:46:54 2026 From: etienne.lerch at gmail.com (Etienne Lerch) Date: Tue, 10 Mar 2026 11:46:54 +0100 Subject: [Qgis-user] Help : QGIS LTR on Fedora 43 Workstation In-Reply-To: References: <60943c11-3899-4078-a540-ccc119f728b9@gmail.com> Message-ID: Hi Richard, Thanks for the quick reply. Well I'm relatively new on linux. All I know is that the "sudo dnf install qgis" (as mentionned on the QGIS website) installs the QGIS 3.44.7 which is not a LTR. And on Flathub i have two choices : 3.28.9 LTS and 3.44.7 that i already use. But since flathub only ships stable versions, I guess the next one will be QGIS 4.0 and as much as I am excited to try it out, I'd like to work on a LTR version, which is not available through these repos currently (apparently). As the image shows below, the repos for Fedora 40 and 41 apparently ship the LTR but from Fedora 42 and upwards it seems like it's QGIS 4.0. And i'm running Fedora 43. Is there a way to download QGIS from the fedora 41 repo even if i'm using fedora 43 ? Or is it not how it works ? Le 10/03/2026 ? 11:03, Richard Duivenvoorde a ?crit?: > Isn't QGIS packaged in the epel repo? > (or is the RHEL/EPEL GDAL issue still a going on?) > > For what I know you get 3.44.7 from flatpak > https://github.com/flathub/org.qgis.qgis/blob/master/org.qgis.qgis.json#L44 > > 3.44 is current LTR isn't it? > > It can/will probably be updated to 3.44.8. > In the issue I see there has been discussion about packaging 2 > branches. But the discussion seems not very fruitfull. > > Regards, > > Richard > > On 2026-03-10 09:59, Etienne Lerch via QGIS-User wrote: >> Hi, I'd like to use the QGIS LTR version on Fedora 43 Workstation but >> I can't find anyway to install it, neither as a rpm package nor a >> flatpak. How to proceed ? >> _______________________________________________ >> QGIS-User mailing list >> QGIS-User at lists.osgeo.org >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: TyFVI2zycUEiVWav.png Type: image/png Size: 55935 bytes Desc: not available URL: From virmose at gmail.com Tue Mar 10 04:56:51 2026 From: virmose at gmail.com (Virginia morales segura) Date: Tue, 10 Mar 2026 11:56:51 +0000 Subject: [Qgis-user] Postgres ddbb moved to a different host won't connect the data on existing qgis workspace Message-ID: Hello, my postgred ddbb host number has changed and I have issues opening workspaces with layers coming from the ddbb. I updated profile settings and updated and reconnect. The issue is that, for existing QGIS workspaces, it keeps trying to reconnect to the old host number so it takes a long time to update. Is there any way to make the existing projects look at the new host? I know I can edit it manually in the *.qgs file but I was hoping for a better solution so I don't have to do that for any existing project. If someone has come up with a solution please let me know. Thank you, Virginia -------------- next part -------------- An HTML attachment was scrubbed... URL: From bab at triarcconsulting.com Tue Mar 10 09:04:06 2026 From: bab at triarcconsulting.com (Brent Blumenstein) Date: Tue, 10 Mar 2026 12:04:06 -0400 Subject: [Qgis-user] US county shared boundaries Message-ID: I recently downloaded and have used QGIS a little. I am a semi-retired biostatistician and have no previous experience with GIS systems previously never had reason to access such. First off: What an incredible community of GIS users and based on just a little experience I am stunned by the positive utility of the resource I have come into. Here is a somewhat lengthy description of the problem I am trying to solve. for the length I apologize. I am attempting to contribute to the betterment of compliance with the democratic principles in the US Constitution. As such I have undertaken what I consider to be an important software development project that requires geographic considerations. For this project I need to know which counties (juristictional partitions) in the 50 US states share a border. Data identifying for each state the counties that share a border is a necessary constraint required for the methodology being developed. Sharing a border is a surrogate for being a close neighbor to other counties within the state. I am currently assessing the plausibility of using the .shp file from the US census downloaded in cb_2020_us_all_500k.zip I have added latitude and longitude border coordinate data using QGIS to be used for identifying the counties that share a border. The example I cite is for Massashusetts, but I expect this problem will be found for some other states but have not looked at all states yet because this example problem cited brings the project to a halt. Here is the problem: The border coordinates in the above identified source do not allow classification of the island counties Dukes and Nantucktet as sharing a border with the neighboring mainland counties Banstable, Bristol, and Plymouth. Thus, the border coordinates in this source cannot be used to identify that these counties "touch," that is, are neighbors. This failure to identify neighboring counties using border coordinates, that is touching, is essential to the project. This issue is expected for other states yet to be assessed. This problem was identified as follows. When development of the software for this project was started sources of county touching data was found quickly for states at web site x xx.yyy (identity purposefully hidden) and could be used without having to learn GIS software). The Massachusetts coordinate border data downloaded from the site allowed the above identified neighboring countries to be classified as touching. Obviously, this file had border coordinates in intervening water (where applicable) between island counties and the mainland counties. (This issue does not exist if there is an island that is part of a county.) Therefore, it was incorrectly assumed that the yet to be assessed states would also identity touches to island counties. The issue identified with in data provided from the US census offerings came about as follows: As I worked through the states using the xxx.yyy cordinale files I found that there were at least two missing state coordinate data files. Apparently, the coordinate file part of the xxx.yyy web site has degenerated from its original content. I have sent a query to the owner of xxx.yyy concerning these missing files but it has yet to be answered. But even if these missing files can be provided that does not meet the goals of the project in an ideal way. Here is an explanation. Once it was concluded, incorrectly, that touching data were readily available the development of the methodology proceeded forward using files from the x xx.yyy web site. The goal of being able to cite US census resources for touching data was simply deferred because it was assumed a replacement to the use of the xxx.yyy files would be possible once the success of the software could be demonstrated (as is now the case). Simply stated, citing the US census resources as a reference has a superior look-and-feel for the manuscript being written for submission to a peer-reviewed journal. The intuitive decision to defer learning how to use GIS software was recently validated when I was forced to use other sources for touching data, namely the US census data. Now, the utility of the software developed in this project is pending until it can be successfully applied to all remaining states. Proceeding requires a new source of border coordinate data that can be used to identify neighboring counties based on touching borders found using border coordinates that might be in the water. Meanwhile, I will continue to try to create an algorithm for use of the census data based on identifying isolation due to water. Simply stated: HELP! -- Brent A. Blumenstein, PhD Trial Architecture Consulting Port Saint Lucie Florida USA www.TriArcConsulting.com bab at TriArcConsulting.com mobile: +1 (206) 390-0081 -------------- next part -------------- An HTML attachment was scrubbed... URL: From qgis-user at stripfamily.net Tue Mar 10 12:43:23 2026 From: qgis-user at stripfamily.net (David Strip) Date: Tue, 10 Mar 2026 13:43:23 -0600 Subject: [Qgis-user] US county shared boundaries In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: From clhermansen at gmail.com Tue Mar 10 13:14:41 2026 From: clhermansen at gmail.com (chris hermansen) Date: Tue, 10 Mar 2026 13:14:41 -0700 Subject: [Qgis-user] US county shared boundaries In-Reply-To: References: Message-ID: David, Brent and list, On Tue, Mar 10, 2026 at 12:43?PM David Strip via QGIS-User < qgis-user at lists.osgeo.org> wrote: > If you are determined to have an automated method, you can find neighbors > using this approach. > Then look for counties with no neighbors. For these counties look for the > closest counties in the same state and add these to the list. > Disclaimer - not from the USA so my opinions here may not count. Having said that, I'm not comfortable with the exhaustiveness of David's proposal below. > > But that seems like a lot of work for a small problem. A cursory search > suggests the number of island counties is quite small and you can patch up > the data by hand: > > 1. Hawaii (All 5 Counties) > > As the only state located entirely on an archipelago, all its counties are > island-based. > > - > > *Hawaii County:* The "Big Island." > - > > *Honolulu County:* Oahu and the Northwestern Hawaiian Islands. > - > > *Kalawao County:* A small peninsula on Molokai (the smallest county in > the US). > - > > *Kauai County:* Kauai, Niihau, and others. > - > > *Maui County:* Maui, Lanai, Molokai, and Kahoolawe. > > 2. Washington (2 Counties) > > While most of Washington is on the mainland, its northwestern corner is > home to: > > - > > *Island County:* Comprised primarily of Whidbey and Camano Islands. > - > > *San Juan County:* Comprised of the 170+ islands that make up the San > Juan archipelago. > > 3. Massachusetts (2 Counties) > > - > > *Nantucket County:* Coextensive with Nantucket Island and its tiny > neighbors (Tuckernuck and Muskeget). > - > > *Dukes County:* Comprised of Martha's Vineyard and the Elizabeth > Islands. > > 4. New York (2 Counties) > > Technically, two of New York City's boroughs are their own island counties: > > - > > *Richmond County (Staten Island):* Comprised of Staten Island and > surrounding smaller islets. > - > > *New York County (Manhattan):* Comprised of Manhattan Island, > Roosevelt Island, and others. (Note: A tiny 0.1 sq mile neighborhood called *Marble > Hill* is physically on the mainland due to a canal being dug in 1895, > but it remains legally part of the island county). > > 5. Rhode Island (1 County) > > - > > *Newport County:* While some of its towns are on the mainland, the > county itself is largely defined by *Aquidneck Island*, *Conanicut > Island*, and *Prudence Island*. However, it is often excluded from > "entirely island" lists because a portion of the county (the town of Little > Compton and Tiverton) is physically attached to the Massachusetts mainland. > > 6. Florida (1 County*) > > - > > *Monroe County:* This is a "hybrid" case. While the populated *Florida > Keys* are entirely islands, the county boundaries actually extend onto > the mainland to include a large, uninhabited portion of the Everglades. > > I'm assuming that there are more than one island in the USA that contains more than one county; certainly Long Island incorporates four counties: Nassau, Suffolk, Queens and Kings. As well, Queens and Kings are also boroughs of New York City. Given what I understand of Brent's interest, it seems to me that there is a kind of "adjacency" relationship between Queens, Kings (Brooklyn) and Manhattan, Bronx and Richmond counties, that is, the boroughs of New York City. I don't know if Brent would consider Nassau and Suffolk counties to be "adjacent" to Manhattan... Also there is the question of adjacency across state lines, I suppose... For example, Long Island looks pretty adjacent to Connecticut to me. Does that count? -- Chris Hermansen ? clhermansen "at" gmail "dot" com C'est ma fa?on de parler. -------------- next part -------------- An HTML attachment was scrubbed... URL: From bab at triarcconsulting.com Tue Mar 10 14:09:40 2026 From: bab at triarcconsulting.com (Brent Blumenstein) Date: Tue, 10 Mar 2026 17:09:40 -0400 Subject: [Qgis-user] US county shared boundaries In-Reply-To: References: Message-ID: Thank you for the response. Yes I agree that some "handwork" could be used here but I think I should pursue the automated solution until I cannot implement it. I have found that the using the census data does indeed find counties where the coordinates indicate isolation, so my plan to focus on isolated counties is what I am pursuing at the moment. However, I found that the census data does not provide a consistent identification of isolated counties across states. There is a huge difference between Masachuchetts and Washington states. The census data does identify Dukes County as isolated but does not identify San Juan County as isolated. In fact, San Juan county is connected to Whatcom and Skagit Counties but does not identify San Juan County as connected to Island, Clallam and Jefferson Counties, which are clearly neighbors even though a little further away. Dukes County and San Juan Counties have roughly the same distance to the nearest county, so there must be some distance parameter at work when the dataset was created, but this theoretical parameter seems to implemented differently in these two states. This finding complicates the algorithm I dream about refining. BTW: The coordinate files from xxx.yyy say that San Juan County has five neighbors {Whatcom, Skagit, Island, Clallam and Jefferson Counties}. This result seems correct to me geven the goals of the project. Similarly, xxx.yyy identifies Dukes County as having mainland counties as neighbors. I have attached maps for reference. On Tue, Mar 10, 2026 at 3:43?PM David Strip wrote: > If you are determined to have an automated method, you can find neighbors > using this approach. > Then look for counties with no neighbors. For these counties look for the > closest counties in the same state and add these to the list. > > But that seems like a lot of work for a small problem. A cursory search > suggests the number of island counties is quite small and you can patch up > the data by hand: > > 1. Hawaii (All 5 Counties) > > As the only state located entirely on an archipelago, all its counties are > island-based. > > - > > *Hawaii County:* The "Big Island." > - > > *Honolulu County:* Oahu and the Northwestern Hawaiian Islands. > - > > *Kalawao County:* A small peninsula on Molokai (the smallest county in > the US). > - > > *Kauai County:* Kauai, Niihau, and others. > - > > *Maui County:* Maui, Lanai, Molokai, and Kahoolawe. > > 2. Washington (2 Counties) > > While most of Washington is on the mainland, its northwestern corner is > home to: > > - > > *Island County:* Comprised primarily of Whidbey and Camano Islands. > - > > *San Juan County:* Comprised of the 170+ islands that make up the San > Juan archipelago. > > 3. Massachusetts (2 Counties) > > - > > *Nantucket County:* Coextensive with Nantucket Island and its tiny > neighbors (Tuckernuck and Muskeget). > - > > *Dukes County:* Comprised of Martha's Vineyard and the Elizabeth > Islands. > > 4. New York (2 Counties) > > Technically, two of New York City's boroughs are their own island counties: > > - > > *Richmond County (Staten Island):* Comprised of Staten Island and > surrounding smaller islets. > - > > *New York County (Manhattan):* Comprised of Manhattan Island, > Roosevelt Island, and others. (Note: A tiny 0.1 sq mile neighborhood called *Marble > Hill* is physically on the mainland due to a canal being dug in 1895, > but it remains legally part of the island county). > > 5. Rhode Island (1 County) > > - > > *Newport County:* While some of its towns are on the mainland, the > county itself is largely defined by *Aquidneck Island*, *Conanicut > Island*, and *Prudence Island*. However, it is often excluded from > "entirely island" lists because a portion of the county (the town of Little > Compton and Tiverton) is physically attached to the Massachusetts mainland. > > 6. Florida (1 County*) > > - > > *Monroe County:* This is a "hybrid" case. While the populated *Florida > Keys* are entirely islands, the county boundaries actually extend onto > the mainland to include a large, uninhabited portion of the Everglades. > > > -- Brent A. Blumenstein, PhD Trial Architecture Consulting Port Saint Lucie Florida USA www.TriArcConsulting.com bab at TriArcConsulting.com mobile: +1 (206) 390-0081 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: StateMaps.zip Type: application/x-zip-compressed Size: 1580360 bytes Desc: not available URL: From Tomas.Szabo at maxnetwork.sk Wed Mar 11 03:02:22 2026 From: Tomas.Szabo at maxnetwork.sk (=?iso-8859-2?Q?Tom=E1=B9_Szab=F3?=) Date: Wed, 11 Mar 2026 10:02:22 +0000 Subject: [Qgis-user] Qgis instalation on C drive Message-ID: <4cf4261445e04be39c5af7b49416935a@maxnetwork.sk> Hi, I cant find how to create command with msi package to install the QGIS LTR on C: drive (C:\QGIS) We need keep this folder for all users on same location without versioning and push the installation with powershell or cmd I found the setup.bat in bin folder but is after post install we try this commands msiexec /i "C:\Temp\QGIS\QGIS-OSGeo4W-3.34.12-1.msi" /q INSTALLDIR="C:\QGIS" msiexec /i "C:\Temp\QGIS\QGIS-OSGeo4W-3.34.12-1.msi" /q TARGETDIR="C:\QGIS" msiexec /i "C:\Temp\QGIS\QGIS-OSGeo4W-3.34.12-1.msi" /q OSGEO4W_ROOT="C:\QGIS" with logging enabled over GUI installation we see: MSI (c) (0C:08) [13:44:39:606]: PROPERTY CHANGE: Adding LicenseAccepted property. Its value is '1'. Action 13:44:40: QGISInstallDirDlg. Dialog created MSI (c) (0C:08) [13:44:50:154]: PROPERTY CHANGE: Modifying INSTALLDIR property. Its current value is 'C:\Program Files\QGIS 3.34.12\'. Its new value: 'C:\QGIS\'. MSI (c) (0C:08) [13:44:50:227]: PROPERTY CHANGE: Deleting INSTALLMENUSHORTCUTS property. Its current value is '1'. MSI (c) (0C:08) [13:44:53:267]: PROPERTY CHANGE: Modifying dir37C738D96EE21014A3CBC4D8EB79E605 property. Its current value is 'C:\Program Files\QGIS 3.34.12\'. Its new value: 'C:\QGIS\'. ....for all files below Please how to add this property to msi install command and not advanced gui? Thank you for help! S pozdravom, Tom?? Szab? IT Systems Administrator mobile: +421 905 786 420 phone: +421 31 230 05 01 [Facebook icon] [Logo] Kpt. J. N?lepku 866/18 925 22 Ve?k? ??any I?O: 36250481 I?DPH: SK2020192009 www.maxnetwork.sk -------------- next part -------------- An HTML attachment was scrubbed... URL: From gdt at lexort.com Wed Mar 11 05:23:04 2026 From: gdt at lexort.com (Greg Troxel) Date: Wed, 11 Mar 2026 08:23:04 -0400 Subject: [Qgis-user] US county shared boundaries In-Reply-To: (chris hermansen via QGIS-User's message of "Tue, 10 Mar 2026 13:14:41 -0700") References: Message-ID: chris hermansen via QGIS-User writes: > I'm assuming that there are more than one island in the USA that contains > more than one county; certainly Long Island incorporates four counties: > Nassau, Suffolk, Queens and Kings. As well, Queens and Kings are also > boroughs of New York City. > > Given what I understand of Brent's interest, it seems to me that there is a > kind of "adjacency" relationship between Queens, Kings (Brooklyn) and > Manhattan, Bronx and Richmond counties, that is, the boroughs of New York > City. I don't know if Brent would consider Nassau and Suffolk counties to > be "adjacent" to Manhattan... > > Also there is the question of adjacency across state lines, I suppose... > For example, Long Island looks pretty adjacent to Connecticut to me. Does > that count? What you are pointing out is that the original problem formulation is ill-formed and that what people think of as adjacent is cultural and not easily amenable to automated processing. I suspect that the NE end of LI feels adjacent to CT -- because there is a ferry -- but also adjacent to NYC. I suspect the people in the SW part see CT as very far away. The comment about Newport County, RI was interesting. Yes, parts of it are technically an island, but culturally it doesn't feel that way. You just drive from Providence to Newport and yes you go over a bridge, but it's not really a big deal. There's no real cultural sense of having crossed to an island. In contrast, Martha's Vineyard and Nantucket (MA) are hard to get to and you really feel like you've crossed. I'm saying this to point out that adjacency isn't as simple as it's being made out to be. From kgjenkins at gmail.com Wed Mar 11 07:20:58 2026 From: kgjenkins at gmail.com (Keith Jenkins) Date: Wed, 11 Mar 2026 10:20:58 -0400 Subject: [Qgis-user] US county shared boundaries In-Reply-To: References: Message-ID: Hi, Brent. In your original message, you mentioned the cb_2020_us_all_500k.zip boundaries, which are clipped to the shoreline. You might also be interested in looking at the Tiger/Line shapefiles that are available here: https://www.census.gov/cgi-bin/geo/shapefiles/index.php These boundaries are not clipped to the shoreline, so the polygons for counties like San Juan and Whatcom extend out into the water and actually share a border, and thus are truly adjacent polygons. I'm attaching a map image to illustrate -- the thick borders are the Tiger/Line shapefiles. The US Census Bureau also publishes a county adjacency file which I think is based on the Tiger/Line polygons. https://www.census.gov/geographies/reference-files/time-series/geo/county-adjacency.html Keith On Wed, Mar 11, 2026 at 3:18?AM Brent Blumenstein via QGIS-User wrote: > > Thank you for the response. Yes I agree that some "handwork" could be used here but I think I should pursue the automated solution until I cannot implement it. I have found that the using the census data does indeed find counties where the coordinates indicate isolation, so my plan to focus on isolated counties is what I am pursuing at the moment. > > However, I found that the census data does not provide a consistent identification of isolated counties across states. There is a huge difference between Masachuchetts and Washington states. The census data does identify Dukes County as isolated but does not identify San Juan County as isolated. In fact, San Juan county is connected to Whatcom and Skagit Counties but does not identify San Juan County as connected to Island, Clallam and Jefferson Counties, which are clearly neighbors even though a little further away. Dukes County and San Juan Counties have roughly the same distance to the nearest county, so there must be some distance parameter at work when the dataset was created, but this theoretical parameter seems to implemented differently in these two states. > > This finding complicates the algorithm I dream about refining. > > BTW: The coordinate files from xxx.yyy say that San Juan County has five neighbors {Whatcom, Skagit, Island, Clallam and Jefferson Counties}. This result seems correct to me geven the goals of the project. Similarly, xxx.yyy identifies Dukes County as having mainland counties as neighbors. > > I have attached maps for reference. -------------- next part -------------- A non-text attachment was scrubbed... Name: counties_tl_cb.png Type: image/png Size: 77646 bytes Desc: not available URL: From bab at triarcconsulting.com Wed Mar 11 08:45:06 2026 From: bab at triarcconsulting.com (Brent Blumenstein) Date: Wed, 11 Mar 2026 11:45:06 -0400 Subject: [Qgis-user] US county shared boundaries In-Reply-To: References: Message-ID: Thanks - I will explore immediately. Seems like I chose the wrong file based on ignorance, which is not an uncommon event. On Wed, Mar 11, 2026 at 10:21?AM Keith Jenkins via QGIS-User < qgis-user at lists.osgeo.org> wrote: > Hi, Brent. > > In your original message, you mentioned the cb_2020_us_all_500k.zip > boundaries, which are clipped to the shoreline. > > You might also be interested in looking at the Tiger/Line shapefiles > that are available here: > https://www.census.gov/cgi-bin/geo/shapefiles/index.php > > These boundaries are not clipped to the shoreline, so the polygons for > counties like San Juan and Whatcom extend out into the water and > actually share a border, and thus are truly adjacent polygons. I'm > attaching a map image to illustrate -- the thick borders are the > Tiger/Line shapefiles. > > The US Census Bureau also publishes a county adjacency file which I > think is based on the Tiger/Line polygons. > > https://www.census.gov/geographies/reference-files/time-series/geo/county-adjacency.html > > Keith > > > On Wed, Mar 11, 2026 at 3:18?AM Brent Blumenstein via QGIS-User > wrote: > > > > Thank you for the response. Yes I agree that some "handwork" could be > used here but I think I should pursue the automated solution until I cannot > implement it. I have found that the using the census data does indeed find > counties where the coordinates indicate isolation, so my plan to focus on > isolated counties is what I am pursuing at the moment. > > > > However, I found that the census data does not provide a consistent > identification of isolated counties across states. There is a huge > difference between Masachuchetts and Washington states. The census data > does identify Dukes County as isolated but does not identify San Juan > County as isolated. In fact, San Juan county is connected to Whatcom and > Skagit Counties but does not identify San Juan County as connected to > Island, Clallam and Jefferson Counties, which are clearly neighbors even > though a little further away. Dukes County and San Juan Counties have > roughly the same distance to the nearest county, so there must be some > distance parameter at work when the dataset was created, but this > theoretical parameter seems to implemented differently in these two states. > > > > This finding complicates the algorithm I dream about refining. > > > > BTW: The coordinate files from xxx.yyy say that San Juan County has five > neighbors {Whatcom, Skagit, Island, Clallam and Jefferson Counties}. This > result seems correct to me geven the goals of the project. Similarly, > xxx.yyy identifies Dukes County as having mainland counties as neighbors. > > > > I have attached maps for reference. > _______________________________________________ > QGIS-User mailing list > QGIS-User at lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > -- Brent A. Blumenstein, PhD Trial Architecture Consulting Port Saint Lucie Florida USA www.TriArcConsulting.com bab at TriArcConsulting.com mobile: +1 (206) 390-0081 -------------- next part -------------- An HTML attachment was scrubbed... URL: From clhermansen at gmail.com Thu Mar 12 10:50:05 2026 From: clhermansen at gmail.com (chris hermansen) Date: Thu, 12 Mar 2026 10:50:05 -0700 Subject: [Qgis-user] Ubuntu 25.10 apt upgrade to QGIS 4.0 fail Message-ID: Hello and apologies for cross-posting; This morning (Pacific daylight time) my automated Ubuntu 25.10 apt upgrade to QGIS 4.0 failed with the following two issues: Title package python3-qgis 1:3.44.7+43questing [origin: QGIS project] failed to install/upgrade: ErrorMessage trying to overwrite '/usr/share/qgis/python/qsci_apis/PyQGIS.api' which is also in package python3-qgis-common (1:3.44.7+43questing) and Title package qgis-providers 1:3.44.7+43questing [origin: QGIS project] failed to install/upgrade: ErrorMessage trying to overwrite '/usr/lib/qgis/plugins/libauthmethod_oauth2.so' which is also in package qgis (1:3.44.7+43questing) I did not look deeply into the cause for this (as a wild guess, something about the apt configuration), but I did determine: 1. a way to avoid it; 2. a way to work around it once not avoided. In terms of avoiding it: 1. once computer is booted and running and BEFORE running daily / weekly software updates / upgrades 2. uninstall qgis 3.44 3. use apt autoclean && apt autoremove -f to remove all 3.44 dependencies 4. run daily / weekly software updates / upgrades 5. install qgis 4.0 If, like me, you ran your daily / weekly updates / upgrades and the upgrade broke, here is what worked for me: 1. uninstall qgis 3.44 and qgis 4.0 2. use apt autoclean && autoremove -f to remove all 3.44 dependencies 3. re-run daily / weekly software updates / upgrades 4. install qgis 4.0 -- Chris Hermansen ? clhermansen "at" gmail "dot" com C'est ma fa?on de parler. -------------- next part -------------- An HTML attachment was scrubbed... URL: From manoloterranova at gmail.com Thu Mar 12 10:41:54 2026 From: manoloterranova at gmail.com (Manolo Terranova) Date: Thu, 12 Mar 2026 18:41:54 +0100 Subject: [Qgis-user] Ubuntu 25.10 apt upgrade to QGIS 4.0 fail In-Reply-To: References: Message-ID: Dear Chris, i had a similar issue. I followed the instructions of QGIS.org, but my computer got stuck with 3.44.7. The day after, rebooting my machine and lauching from terminal "upgrade+update" and "fix install" i solved the problem and now QGIS 4.0 is working perfectly. Cheers, Manolo On Thu, Mar 12, 2026 at 6:50?PM chris hermansen via QGIS-User < qgis-user at lists.osgeo.org> wrote: > Hello and apologies for cross-posting; > > This morning (Pacific daylight time) my automated Ubuntu 25.10 apt upgrade > to QGIS 4.0 failed with the following two issues: > > Title > package python3-qgis 1:3.44.7+43questing [origin: QGIS project] failed > to install/upgrade: > ErrorMessage > trying to overwrite '/usr/share/qgis/python/qsci_apis/PyQGIS.api' which > is also in package python3-qgis-common (1:3.44.7+43questing) > > and > > Title > package qgis-providers 1:3.44.7+43questing [origin: QGIS project] > failed to install/upgrade: > ErrorMessage > trying to overwrite '/usr/lib/qgis/plugins/libauthmethod_oauth2.so' > which is also in package qgis (1:3.44.7+43questing) > > I did not look deeply into the cause for this (as a wild guess, something > about the apt configuration), but I did determine: > > 1. a way to avoid it; > 2. a way to work around it once not avoided. > > In terms of avoiding it: > > 1. once computer is booted and running and BEFORE running daily / > weekly software updates / upgrades > 2. uninstall qgis 3.44 > 3. use apt autoclean && apt autoremove -f to remove all 3.44 > dependencies > 4. run daily / weekly software updates / upgrades > 5. install qgis 4.0 > > If, like me, you ran your daily / weekly updates / upgrades and the > upgrade broke, here is what worked for me: > > 1. uninstall qgis 3.44 and qgis 4.0 > 2. use apt autoclean && autoremove -f to remove all 3.44 dependencies > 3. re-run daily / weekly software updates / upgrades > 4. install qgis 4.0 > > > -- > Chris Hermansen ? clhermansen "at" gmail "dot" com > > C'est ma fa?on de parler. > _______________________________________________ > QGIS-User mailing list > QGIS-User at lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > -------------- next part -------------- An HTML attachment was scrubbed... URL: From jmawer at fastmail.com Thu Mar 12 17:21:48 2026 From: jmawer at fastmail.com (Josh Mawer) Date: Fri, 13 Mar 2026 13:21:48 +1300 Subject: [Qgis-user] QGIS 4 Mac - Install additional python packages Message-ID: Hi QGIS User List, I am developing a python based QGIS processing script which is working great on a Windows installation. However, when I try to run it on my Mac I get an error stating the Matplotlib package is not installed in the python environment. How can I install additional packages into the QGIS python environment? I have found a few old StackOverflow threads mentioning installing via Pip3 from within the QGIS Application Package. However, Pip3 doesn't seem to be contained there any more. Any thoughts? Thanks, -------------- next part -------------- An HTML attachment was scrubbed... URL: From bab at triarcconsulting.com Fri Mar 13 05:37:18 2026 From: bab at triarcconsulting.com (Brent Blumenstein) Date: Fri, 13 Mar 2026 08:37:18 -0400 Subject: [Qgis-user] US county shared boundaries In-Reply-To: References: Message-ID: Success! On Wed, Mar 11, 2026 at 11:45?AM Brent Blumenstein wrote: > Thanks - I will explore immediately. Seems like I chose the wrong file > based on ignorance, which is not an uncommon event. > > On Wed, Mar 11, 2026 at 10:21?AM Keith Jenkins via QGIS-User < > qgis-user at lists.osgeo.org> wrote: > >> Hi, Brent. >> >> In your original message, you mentioned the cb_2020_us_all_500k.zip >> boundaries, which are clipped to the shoreline. >> >> You might also be interested in looking at the Tiger/Line shapefiles >> that are available here: >> https://www.census.gov/cgi-bin/geo/shapefiles/index.php >> >> These boundaries are not clipped to the shoreline, so the polygons for >> counties like San Juan and Whatcom extend out into the water and >> actually share a border, and thus are truly adjacent polygons. I'm >> attaching a map image to illustrate -- the thick borders are the >> Tiger/Line shapefiles. >> >> The US Census Bureau also publishes a county adjacency file which I >> think is based on the Tiger/Line polygons. >> >> https://www.census.gov/geographies/reference-files/time-series/geo/county-adjacency.html >> >> Keith >> >> >> On Wed, Mar 11, 2026 at 3:18?AM Brent Blumenstein via QGIS-User >> wrote: >> > >> > Thank you for the response. Yes I agree that some "handwork" could be >> used here but I think I should pursue the automated solution until I cannot >> implement it. I have found that the using the census data does indeed find >> counties where the coordinates indicate isolation, so my plan to focus on >> isolated counties is what I am pursuing at the moment. >> > >> > However, I found that the census data does not provide a consistent >> identification of isolated counties across states. There is a huge >> difference between Masachuchetts and Washington states. The census data >> does identify Dukes County as isolated but does not identify San Juan >> County as isolated. In fact, San Juan county is connected to Whatcom and >> Skagit Counties but does not identify San Juan County as connected to >> Island, Clallam and Jefferson Counties, which are clearly neighbors even >> though a little further away. Dukes County and San Juan Counties have >> roughly the same distance to the nearest county, so there must be some >> distance parameter at work when the dataset was created, but this >> theoretical parameter seems to implemented differently in these two states. >> > >> > This finding complicates the algorithm I dream about refining. >> > >> > BTW: The coordinate files from xxx.yyy say that San Juan County has >> five neighbors {Whatcom, Skagit, Island, Clallam and Jefferson Counties}. >> This result seems correct to me geven the goals of the project. Similarly, >> xxx.yyy identifies Dukes County as having mainland counties as neighbors. >> > >> > I have attached maps for reference. >> _______________________________________________ >> QGIS-User mailing list >> QGIS-User at lists.osgeo.org >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >> > > > -- > Brent A. Blumenstein, PhD > Trial Architecture Consulting > Port Saint Lucie Florida USA > www.TriArcConsulting.com > bab at TriArcConsulting.com > mobile: +1 (206) 390-0081 > -- Brent A. Blumenstein, PhD Trial Architecture Consulting Port Saint Lucie Florida USA www.TriArcConsulting.com bab at TriArcConsulting.com mobile: +1 (206) 390-0081 -------------- next part -------------- An HTML attachment was scrubbed... URL: From zweers at dds.nl Fri Mar 13 11:07:12 2026 From: zweers at dds.nl (wout zweers) Date: Fri, 13 Mar 2026 19:07:12 +0100 Subject: [Qgis-user] 16 bit greyscale map gives stepping artifacts Message-ID: <72e55d36-794d-4daa-b11c-cc66e75549b2@dds.nl> Hi all, Maybe someone can help me further with the following item: *how to avoid banding in a greyscale height map * I make detailed maquettes with a 3d printer.?The model,?a detailed 3D mesh,?will be generated in ZBrush. 8 bit greyscale maps are not detailed enough, I need at least a 16 bit map?to avoid stepping (banding). My basic maps are 32 bit geotiff (Netherlands? AHN, downloaded directly from the AHN Server. I make a layer with this map and then process it: I use the processing toolbox: GDAL > raster conversion > translate. Settings: output data type = UInt16a This should do the job, it produces a 16 bit greyscale map that i can store as a tiff or png, but when i use this in ZBrush I notice (typical) 8 bit-like banding. ZBrush is capable of processing 16 bit greyscale maps.?In Qgis I could see the banding in the resulting map as well. I tried other output formats (float32, Int16) but they did not work either. Maybe scaling is necessary (0-255 to 0- 65535) or setting a no data value (65535? 0?)?If so, what are the correct settings??I kept tinkering with it, but did not find the proper setting or procedure Is there anybody who has the same problem, or perhaps solved it already? It would be very convenient to know how to do it, the work arounds are very labour intensive. Wout Zweers, Netherlands -------------- next part -------------- An HTML attachment was scrubbed... URL: From gdt at lexort.com Fri Mar 13 11:26:56 2026 From: gdt at lexort.com (Greg Troxel) Date: Fri, 13 Mar 2026 14:26:56 -0400 Subject: [Qgis-user] 16 bit greyscale map gives stepping artifacts In-Reply-To: <72e55d36-794d-4daa-b11c-cc66e75549b2@dds.nl> (wout zweers via QGIS-User's message of "Fri, 13 Mar 2026 19:07:12 +0100") References: <72e55d36-794d-4daa-b11c-cc66e75549b2@dds.nl> Message-ID: wout zweers via QGIS-User writes: > My basic maps are 32 bit geotiff (Netherlands? AHN, downloaded > directly from the AHN Server. I make a layer with this map and then > process it: You did not describe what the resolution of the DEM is, or the range of values over the area you are processing. If the DEM has 1 meter resolution and the values range from -3 to 12 meters (from where I am my impression is that your country is pretty flat :-), then you'll have quantization artifacts, even if the DEM's data representation could go from -32768 to 32767 meters. From andreaerdna at libero.it Fri Mar 13 12:31:01 2026 From: andreaerdna at libero.it (Andrea Giudiceandrea) Date: Fri, 13 Mar 2026 20:31:01 +0100 Subject: [Qgis-user] 16 bit greyscale map gives stepping artifacts Message-ID: <50572ecf-b9a5-48dc-b9c5-468b38c417f1@libero.it> Hi Wout, AFAIK, you need to use the -scale parameter either without specifying any value (in such case they are calculated automatically) or providing them. See: - https://gdal.org/en/stable/programs/gdal_translate.html#cmdoption-gdal_translate-scale - https://gis.stackexchange.com/questions/441431/float32-to-uint16-terracing-problem - https://gis.stackexchange.com/questions/421660/terracing-stepping-artefacts-after-converting-lidar-dtm-from-float32-to-uint16/429205#429205 - https://aerial2orthorect.wordpress.com/2015/03/24/convert-float-32-bit-to-16-bit-using-gdal-commander/ Regards. Andrea From mulangoosvaldo at gmail.com Sat Mar 14 00:33:00 2026 From: mulangoosvaldo at gmail.com (osvaldo mulango) Date: Sat, 14 Mar 2026 09:33:00 +0200 Subject: [Qgis-user] (no subject) Message-ID: Bom dia a todos, sou iniciante no Qgis e j? desenvolvi um plugin que j? se encontra no reposit?rio oficial, gostava de saber qual ? a sequ?ncia num?rica do versionamento dos plugins, porque pretendo criar uma nova vers?o e tendo iniciado com 0.1 -------------- next part -------------- An HTML attachment was scrubbed... URL: From ujaval at spatialthoughts.com Sat Mar 14 02:25:01 2026 From: ujaval at spatialthoughts.com (Ujaval Gandhi) Date: Sat, 14 Mar 2026 09:25:01 +0000 Subject: [Qgis-user] QGIS 4 Mac - Install additional python packages In-Reply-To: References: Message-ID: <16b65242-3d65-b250-5227-2349c058ac74@spatialthoughts.com> Hi Josh, Use the snippet below. This was suggested by Matthias Kuhn in this discussion. https://github.com/qgis/QGIS/issues/63939#issuecomment-3621819919. [https://github.com/qgis/QGIS/issues/63939#issuecomment-3621819919.] Tested and works fine on QGIS 4.0.0 on Mac import subprocess import sys from pathlib import Path # Get the root directory with our applications python_dir = Path(sys.executable).parent python_executable = python_dir / "python" def install(package): ? ? subprocess.check_call([str(python_executable), "-m", "pip", "install", package]) install("yourpackage") --- Ujaval Gandhi Spatial Thoughts www.spatialthoughts.com [http://www.spatialthoughts.com] On Fri, Mar 13, 2026 at 5:52?AM Josh Mawer via QGIS-User wrote: > Hi QGIS User List, > > > I am developing a python based QGIS processing script which is working great > on a Windows installation.? However, when I try to run it on my Mac I get an > error stating the Matplotlib package is not installed in the python > environment. > > > How can I install additional packages into the QGIS python environment?? I > have found a few old StackOverflow threads mentioning installing via Pip3 from > within the QGIS Application Package.? However, Pip3 doesn't seem to be > contained there any more. > > > Any thoughts? Thanks, > _______________________________________________ > QGIS-User mailing list > QGIS-User at lists.osgeo.org [QGIS-User at lists.osgeo.org] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > [https://lists.osgeo.org/mailman/listinfo/qgis-user] > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > [https://lists.osgeo.org/mailman/listinfo/qgis-user] [data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=3D] -------------- next part -------------- An HTML attachment was scrubbed... URL: From landconsult at freenet.de Sat Mar 14 10:18:12 2026 From: landconsult at freenet.de (landConsult at freenet.de) Date: Sat, 14 Mar 2026 18:18:12 +0100 Subject: [Qgis-user] repository https://qgis.org/debian installs QGIS LTR 3.44 on Sat. March, 14th. Message-ID: <66dfef56-7d3a-4786-81fe-cfe915d9954f@freenet.de> Dear List, today, I installed QGIS 4.0 on my Ubuntu 24.04. system. I followed the instructions on the qgis.org website and used the repository https://qgis.org/debian. But instead of QGIS 4.0, the LTR version Solothurn 3.44 has been installed on my computer. Is there a known issue with the links to the different repositories? Best regards, Markus From andreaerdna at libero.it Sat Mar 14 10:54:12 2026 From: andreaerdna at libero.it (Andrea Giudiceandrea) Date: Sat, 14 Mar 2026 18:54:12 +0100 Subject: [Qgis-user] repository https://qgis.org/debian installs QGIS LTR 3.44 on Sat. March, 14th. Message-ID: <9c6466a8-16f0-42af-aef9-6b089c3e030f@libero.it> Hi Markus, it looks like QGIS 4.0.0 is currently not available for Ubuntu 24.04 Noble Numbat: the latest available versions in the qgis.org repositories for Ubuntu 24.04 are QGIS 3.44.7 (in https://qgis.org/debian) and QGIS LTR 3.44.8 (in https://qgis.org/debian-ltr). Not sure if QGIS 4.0.0 will be available later. Regards. Andrea > landConsult at freenet.de landconsult at freenet.de > Sat Mar 14 10:18:12 PDT 2026 > today, I installed QGIS 4.0 on my Ubuntu 24.04. system. > But instead of QGIS 4.0, the LTR version > Solothurn 3.44 has been installed on my computer. From jef at norbit.de Sat Mar 14 11:27:25 2026 From: jef at norbit.de (=?utf-8?Q?J=C3=BCrgen_E=2E?= Fischer) Date: Sat, 14 Mar 2026 19:27:25 +0100 Subject: [Qgis-user] repository https://qgis.org/debian installs QGIS LTR 3.44 on Sat. March, 14th. In-Reply-To: <9c6466a8-16f0-42af-aef9-6b089c3e030f@libero.it> References: <9c6466a8-16f0-42af-aef9-6b089c3e030f@libero.it> Message-ID: <20260314182725.av2vgz355ewrofyy@norbit.de> Hi Andrea, On Sat, 14. Mar 2026 at 18:54:12 +0100, Andrea Giudiceandrea via QGIS-User wrote: > Not sure if QGIS 4.0.0 will be available later. No, noble's sip is too old. J?rgen -- J?rgen E. Fischer norBIT GmbH Tel. +49-4931-918175-31 Dipl.-Inf. (FH) Rheinstra?e 13 Fax. +49-4931-918175-50 Software Engineer D-26506 Norden https://www.norbit.de QGIS release manager (PSC) Germany Matrix: @jef:osgeo.org -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: not available URL: From landconsult at freenet.de Sat Mar 14 12:03:39 2026 From: landconsult at freenet.de (landConsult at freenet.de) Date: Sat, 14 Mar 2026 20:03:39 +0100 Subject: [Qgis-user] repository https://qgis.org/debian installs QGIS LTR 3.44 on Sat. March, 14th. In-Reply-To: <20260314182725.av2vgz355ewrofyy@norbit.de> References: <9c6466a8-16f0-42af-aef9-6b089c3e030f@libero.it> <20260314182725.av2vgz355ewrofyy@norbit.de> Message-ID: <2d4d5bf4-36d0-4ad5-8044-1a874ca1bf87@freenet.de> Thanks Andrea and J?rgen for the clarification! Have a nice weekend. Markus Am 14.03.26 um 19:27 schrieb J?rgen E. Fischer via QGIS-User: > Hi Andrea, > > On Sat, 14. Mar 2026 at 18:54:12 +0100, Andrea Giudiceandrea via QGIS-User wrote: >> Not sure if QGIS 4.0.0 will be available later. > No, noble's sip is too old. > > J?rgen > > > _______________________________________________ > QGIS-User mailing list > QGIS-User at lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user From jmawer at fastmail.com Sat Mar 14 18:01:23 2026 From: jmawer at fastmail.com (Josh Mawer) Date: Sun, 15 Mar 2026 14:01:23 +1300 Subject: [Qgis-user] QGIS 4 Mac - Install additional python packages In-Reply-To: <16b65242-3d65-b250-5227-2349c058ac74@spatialthoughts.com> References: <16b65242-3d65-b250-5227-2349c058ac74@spatialthoughts.com> Message-ID: <80785125-c9d9-4dc2-b3dd-44357d8a7592@app.fastmail.com> Unfortunatley that doesn?t work for me either. It fails with the following error: Traceback (most recent call last): File "", line 1, in File "Untitled-0", line 13, in File "Untitled-0", line 11, in install File "/Applications/QGIS 4.app/Contents/Frameworks/lib/python3.12/subprocess.py", line 413, in check_call raise CalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command '['/Applications/QGIS 4.app/Contents/MacOS/python', '-m', 'pip', 'install', 'matplotlib']' returned non-zero exit status 126. On Sat, 14 Mar 2026, at 10:25 PM, Ujaval Gandhi wrote: > Hi Josh, > > Use the snippet below. This was suggested by Matthias Kuhn in this discussion. https://github.com/qgis/QGIS/issues/63939#issuecomment-3621819919. Tested and works fine on QGIS 4.0.0 on Mac > > import subprocess > import sys > from pathlib import Path > > # Get the root directory with our applications > python_dir = Path(sys.executable).parent > > python_executable = python_dir / "python" > > def install(package): > subprocess.check_call([str(python_executable), "-m", "pip", "install", package]) > > install("yourpackage") > > --- > Ujaval Gandhi > Spatial Thoughts > www.spatialthoughts.com > > > > On Fri, Mar 13, 2026 at 5:52?AM Josh Mawer via QGIS-User wrote: >> __ >> Hi QGIS User List, >> >> I am developing a python based QGIS processing script which is working great on a Windows installation. However, when I try to run it on my Mac I get an error stating the Matplotlib package is not installed in the python environment. >> >> How can I install additional packages into the QGIS python environment? I have found a few old StackOverflow threads mentioning installing via Pip3 from within the QGIS Application Package. However, Pip3 doesn't seem to be contained there any more. >> >> Any thoughts? Thanks, >> _______________________________________________ >> QGIS-User mailing list >> QGIS-User at lists.osgeo.org >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > -------------- next part -------------- An HTML attachment was scrubbed... URL: From lorenzomoretti24 at yahoo.it Sun Mar 15 17:14:54 2026 From: lorenzomoretti24 at yahoo.it (Lorenzo Moretti) Date: Mon, 16 Mar 2026 01:14:54 +0100 Subject: [Qgis-user] QGIS 4 Mac - Install additional python packages In-Reply-To: References: Message-ID: <53AB6345-8731-428F-9E54-5B1DA71130DC@yahoo.it> Hi Josh I add many libraries in this way. Open Terminal and enter: % /Applications/QGIS.app/Contents/MacOS/python -m pip install scipy plotly pandas matplotlib colorama scikit-learn astropy PyOpenGL xgboost lightgbm numba netCDF4 Lorenzo > Il giorno 13 mar 2026, alle ore 01:21, Josh Mawer via QGIS-User ha scritto: > > Hi QGIS User List, > > I am developing a python based QGIS processing script which is working great on a Windows installation. However, when I try to run it on my Mac I get an error stating the Matplotlib package is not installed in the python environment. > > How can I install additional packages into the QGIS python environment? I have found a few old StackOverflow threads mentioning installing via Pip3 from within the QGIS Application Package. However, Pip3 doesn't seem to be contained there any more. > > Any thoughts? Thanks, > _______________________________________________ > QGIS-User mailing list > QGIS-User at lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user -------------- next part -------------- An HTML attachment was scrubbed... URL: From jmawer at fastmail.com Sun Mar 15 17:31:25 2026 From: jmawer at fastmail.com (Josh Mawer) Date: Mon, 16 Mar 2026 13:31:25 +1300 Subject: [Qgis-user] QGIS 4 Mac - Install additional python packages In-Reply-To: <53AB6345-8731-428F-9E54-5B1DA71130DC@yahoo.it> References: <53AB6345-8731-428F-9E54-5B1DA71130DC@yahoo.it> Message-ID: Excellent, thank you. That did the trick. On Mon, 16 Mar 2026, at 1:14 PM, Lorenzo Moretti wrote: > Hi Josh > > I add many libraries in this way. Open Terminal and enter: > > % /Applications/QGIS.app/Contents/MacOS/python -m pip install scipy plotly pandas matplotlib colorama scikit-learn astropy PyOpenGL xgboost lightgbm numba netCDF4 > > > > Lorenzo > >> Il giorno 13 mar 2026, alle ore 01:21, Josh Mawer via QGIS-User ha scritto: >> >> Hi QGIS User List, >> >> I am developing a python based QGIS processing script which is working great on a Windows installation. However, when I try to run it on my Mac I get an error stating the Matplotlib package is not installed in the python environment. >> >> How can I install additional packages into the QGIS python environment? I have found a few old StackOverflow threads mentioning installing via Pip3 from within the QGIS Application Package. However, Pip3 doesn't seem to be contained there any more. >> >> Any thoughts? Thanks, >> _______________________________________________ >> QGIS-User mailing list >> QGIS-User at lists.osgeo.org >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user -------------- next part -------------- An HTML attachment was scrubbed... URL: From thekla.wirkus at wheregroup.com Tue Mar 17 02:39:46 2026 From: thekla.wirkus at wheregroup.com (Thekla Wirkus) Date: Tue, 17 Mar 2026 10:39:46 +0100 Subject: [Qgis-user] WMS-Time with QGIS Server Message-ID: <0104af24-886b-47f3-9929-3e68b2ede2fb@wheregroup.com> Hello, I want to use QGIS to create a QGIS Server WMS-Time that displays a time period. - The PostGIS table for the layer contains a 'time' column stored as a date, with annual values such as 2019-01-01, 2020-01-01, 2021-01-01 ... - In the layer 'properties -temporal' I have set: ? ? - Configuration: Fixed period ? ? - Start inclusive, End exclusive ? ? - Start date: 2017-01-01 00:00:00 ? ? - End date: 2024-01-01 00:00:00 The following appears in the getCapabilities document: 2017-01-01, 2018-01-01, 2019-01-01, 2020-01-01, 2021-01-01, 2022-01-01, 2023-01-01 However, I would like to obtain a time range that should look like this in the getCapabilities document: 2017/2023/P2Y Is it possible to get this information in the getCapabilities document? What settings do I need to configure? Best regards Thekla