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<div>Ciao Giada,</div>
<div dir="ltr">Una volta che hai utilizzato lo strumento clip affinche' tutte le sub area entrino nel tuo bacino (non ti preoccupare se alcune aree che fanno parte della stessa sub-area vengono mozzate).</div>
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<div dir="ltr">Per raggruppare le aree che appartengono ad una stessa sub-area ma che sono state mozzate, puoi raggrupparle a mano (se sono poche) oppure assegnare uno stesso ID alle suddette geometrie ed usare lo strumento "Dissolve" (io uso la versione inglese
e non so come e se lo abbiamo tradotto in italiano).</div>
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<div dir="ltr">Per calcolare l'area, <span style="font-size: 1.06rem;">apri la tavola degli attributi delle sub-area.</span></div>
<div dir="ltr">Metti in modalita' edit e crea un nuovo campo in Real (10,2), dai un nome a questo nuovo campo che stai per creare, e scrivi la seguente formula senza gli apici "$Area" nella console e dai OK. Cosi' facendo, dovresti avere un nuovo campo e per
ogni feature dovresti averne ottenuto l'area.</div>
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<div dir="ltr">Facci sapere come e' andata!</div>
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<div dir="ltr">Ciao</div>
<div dir="ltr">Davide</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Qgis-user <qgis-user-bounces@lists.osgeo.org> on behalf of qgis-user-request@lists.osgeo.org <qgis-user-request@lists.osgeo.org><br>
<b>Sent:</b> Tuesday, March 3, 2020 7:00:02 AM<br>
<b>To:</b> qgis-user@lists.osgeo.org <qgis-user@lists.osgeo.org><br>
<b>Subject:</b> Qgis-user Digest, Vol 169, Issue 3</font>
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<div class="PlainText">Send Qgis-user mailing list submissions to<br>
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Today's Topics:<br>
<br>
1. Re: [QGIS-Developer] Thoughts on QGIS Development and LTR<br>
Releases (Nyall Dawson)<br>
2. QGIS Server 3.4 LTR - sld_body support (Häfliger Guido)<br>
3. Flickering cursor (Andrew_dot_me)<br>
4. LTR installs (Paul Wittle)<br>
5. Strumento di geoprocessing "taglio" (Giada Biraghi)<br>
6. Re: Flickering cursor (Nicolas Cadieux)<br>
7. Re: LTR installs (Jürgen E. Fischer)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Mon, 2 Mar 2020 08:21:14 +1000<br>
From: Nyall Dawson <nyall.dawson@gmail.com><br>
To: Micha Silver <tsvibar@gmail.com><br>
Cc: Brent Wood <Brent.Wood@niwa.co.nz>, QGIS User<br>
<qgis-user@lists.osgeo.org>, qgis-developer<br>
<qgis-developer@lists.osgeo.org><br>
Subject: Re: [Qgis-user] [QGIS-Developer] Thoughts on QGIS Development<br>
and LTR Releases<br>
Message-ID:<br>
<CAB28Ashozen1ZAo2jr7Su21JJ303dEJfF=O4WhdcgKCXXK6fEg@mail.gmail.com><br>
Content-Type: text/plain; charset="UTF-8"<br>
<br>
On Mon, 2 Mar 2020 at 05:03, Micha Silver <tsvibar@gmail.com> wrote:<br>
><br>
> This discussion has raised important issues and clarified concerns from the user's perspective. But there is another hurdle that lies between developers and users that hasn't been mentioned yet (not in this thread, anyway): packaging.<br>
><br>
><br>
> Different packagers (on different repositories) release versions on different schedule that may or may not be synchronized with the developers. What makes the situation even more troublesome is release of dependencies at yet another schedule. So all too often
we find ourselves stuck after a routine system update, with unresolved dependencies and partially or totally unusable software. This has happened with QGIS and the grass plugin, and recently with updates to proj4 and gdal.<br>
><br>
><br>
> There's no doubt that moving to a 2 year life cycle for LTS will help mitigate this recurring problem.<br>
<br>
Actually, a 2 year cycle will make this far, far more problematic.<br>
<br>
An example is the proj library. QGIS 3.4 was developed using the older<br>
proj v4 library, and while it's possible to build it using proj v 6 or<br>
v7, it's not far from recommended. When proj v8 is released then it<br>
will become completely impossible to build QGIS 3.4. If we tried to<br>
squeeze another 12 months out of QGIS 3.4 then we'll bump into all<br>
sorts of linux packaging issues as the underlying linux distros<br>
upgrade to proj v6 or later. And that's completely out of our<br>
control...<br>
<br>
Nyall<br>
<br>
<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Mon, 2 Mar 2020 07:47:08 +0000<br>
From: Häfliger Guido <guido.haefliger@vogelwarte.ch><br>
To: "'qgis-user@lists.osgeo.org'" <qgis-user@lists.osgeo.org><br>
Subject: [Qgis-user] QGIS Server 3.4 LTR - sld_body support<br>
Message-ID:<br>
<D2417C80A342B246BEAF2C90A301E0AF771D0A2C@MailNT.vogelwarte.ch><br>
Content-Type: text/plain; charset="iso-8859-1"<br>
<br>
Hi<br>
I'm migrating a Web Application from QGIS 2.18 to QGIS 3.4. In the old application we used sld_body- parameter in WMS request to add a custom layer (raster) to the qgis-project. The syntax is the following:<br>
SLD_BODY : <SLD units="mm"><UserLayer><Name>scans_17273</Name><HostedRDS uri="/home/research/vogelatlas/data/scans/2019/3/inventory_17273.tif" epsg="2056"/><UserStyle><Name>style</Name></UserStyle></UserLayer></SLD><br>
<br>
In the error log there is no error but the result of the request is:<br>
<ServiceException code="InvalidCRS">Could not create output CRS</ServiceException><br>
<br>
Does anybody know if UserLayer in sld_body is still supported in QGIS Server 3.4 or in a version > 3.4?<br>
<br>
Thanks in advance for your information<br>
<br>
____________________________________________________<br>
<br>
Dipl. Ing. ETH Guido Häfliger<br>
EDV/GIS-Spezialist<br>
Tel. ++41 41 462 97 60<br>
guido.haefliger@vogelwarte.ch<mailto:guido.haefliger@vogelwarte.ch><br>
www.vogelwarte.ch<<a href="http://www.vogelwarte.ch/">http://www.vogelwarte.ch/</a>><br>
<br>
Schweizerische Vogelwarte | Seerose 1 | CH-6204 Sempach | Schweiz<br>
Station ornithologique suisse | Seerose 1 | CH-6204 Sempach | Suisse<br>
Stazione ornitologica svizzera | Seerose 1 | CH-6204 Sempach | Svizzera<br>
Swiss Ornithological Institute | Seerose 1 | CH-6204 Sempach | Switzerland<br>
<br>
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Message: 3<br>
Date: Mon, 2 Mar 2020 10:28:12 +0000<br>
From: Andrew_dot_me <andrew@grant-adamson.me.uk><br>
To: "qgis-user@lists.osgeo.org" <qgis-user@lists.osgeo.org><br>
Subject: [Qgis-user] Flickering cursor<br>
Message-ID: <EE5F5CBB-E80E-4944-B9A9-E6DF314010E7@grant-adamson.me.uk><br>
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<br>
My cursors have started flickering when moved. The flickering stops when the cursor is still but it is making it very hard to draw a polygon. I have tried restarting, resetting the gui, opening an older project and switching to another qgis version but the
problem persists. I can see anything in the preferences which might be the casue. I am using 3.10 on a Macbook Pro running os Catalina.<br>
<br>
And advice would be very welcome.<br>
<br>
Andrew<br>
<br>
------------------------------<br>
<br>
Message: 4<br>
Date: Mon, 2 Mar 2020 11:58:04 +0000<br>
From: Paul Wittle <paul.wittle@dorsetcouncil.gov.uk><br>
To: "qgis-user@lists.osgeo.org" <qgis-user@lists.osgeo.org><br>
Subject: [Qgis-user] LTR installs<br>
Message-ID:<br>
<AM6PR02MB53172EB2220C5C642619B548C8E70@AM6PR02MB5317.eurprd02.prod.outlook.com><br>
<br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hi,<br>
<br>
I seem to always be looking at QGIS at the wrong time of year and once again I seem to have hit the magic LR/PR window where a new Long Term Release has been issued but is not yet showing as the long term release in the advanced installer. As usual my deadline
is before the March release.<br>
<br>
Qgis-ltr-full is currently still only giving me the option of 3.4. I know that I can click twice on the QGIS option instead of qgis-ltr-full and that will give me version 3.10.x but how do I know what other library versions I should be installing?<br>
<br>
To give an example; in the past I've selected qgis-ltr-full then hit next to add the dependencies. I then head back and the install shows all the dependences it has selected like grass, python and GDAL for example. This allows me to see which additional ones
I need, such as Oracle for example.<br>
<br>
I don't have so much confidence when doing the same process in this one month window between the first and second releases so is anyone able to provide a definitive list of what should be selected to get the equivalent of qgis-ltr-full for version 3.10.x at
the moment?<br>
<br>
Any tips would be greatly appreciated.<br>
<br>
Thanks,<br>
Paul<br>
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Message: 5<br>
Date: Mon, 2 Mar 2020 14:19:17 +0100<br>
From: Giada Biraghi <giada.biraghi16@gmail.com><br>
To: qgis-user@lists.osgeo.org<br>
Subject: [Qgis-user] Strumento di geoprocessing "taglio"<br>
Message-ID:<br>
<CAFUTsUmo2FcOzJmqD5XUF3B4ev8=Cj2NzUZtvHwgWr5uFgvAkw@mail.gmail.com><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Utilizzo la versione Qgis 3.10.2<br>
<br>
><br>
Obiettivo: calcolare le diverse aree (in metri quadri) delle sottoaree<br>
> riferite al layer "uso del suolo" contenute all'interno di un bacino<br>
> idrografico da me tracciato come layer "linea".<br>
><br>
> Ho caricato il layer uso del suolo di tutta la regione Lombardia su Qgis e<br>
> ho tracciato (creando un nuovo vettore/shape/linea) un bacino idrografico<br>
> di una zona della provincia di Como.<br>
><br>
> Ho necessità di ottenere un nuovo shape (poligono) del mio bacino<br>
> idrografico che contenga le sottoaree a diverso uso del suolo (tutto il<br>
> resto della regione Lombardia non mi interessa).<br>
><br>
> Inoltre il perimetro del mio bacino a volte taglia una stessa area in due,<br>
> una interna al bacino e una esterna (come da foto allegata). Ovviamente a<br>
> me interessa sapere non tutta l'area ma solo l'area interna al bacino.<br>
><br>
> Ho utlizzato gli strumenti di geoprocessing (taglio, intersezione) ma il<br>
> processo fallisce.<br>
> Come si può procedere?<br>
><br>
> Grazie<br>
> Giada<br>
><br>
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Message: 6<br>
Date: Mon, 2 Mar 2020 09:57:53 -0500<br>
From: Nicolas Cadieux <nicolas.cadieux@archeotec.ca><br>
To: Andrew_dot_me <andrew@grant-adamson.me.uk><br>
Cc: "qgis-user@lists.osgeo.org" <qgis-user@lists.osgeo.org><br>
Subject: Re: [Qgis-user] Flickering cursor<br>
Message-ID: <2EBB7119-886B-4537-8D90-7D224B8A7281@archeotec.ca><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hi,<br>
<br>
Try rebooting the Mac, updating the OS, video drivers and mouse drivers. If you use two screens, put QGIS on another screen. Try another mouse, change the mouse batteries. Do you have the same problem with other software? Try working with Saga or Grass to
see if you have the same problems. <br>
<br>
Nicolas Cadieux<br>
<br>
> Le 2 mars 2020 à 05:40, Andrew_dot_me <andrew@grant-adamson.me.uk> a écrit :<br>
> <br>
> My cursors have started flickering when moved. The flickering stops when the cursor is still but it is making it very hard to draw a polygon. I have tried restarting, resetting the gui, opening an older project and switching to another qgis version but the
problem persists. I can see anything in the preferences which might be the casue. I am using 3.10 on a Macbook Pro running os Catalina.<br>
> <br>
> And advice would be very welcome.<br>
> <br>
> Andrew<br>
> _______________________________________________<br>
> Qgis-user mailing list<br>
> Qgis-user@lists.osgeo.org<br>
> List info: <a href="https://lists.osgeo.org/mailman/listinfo/qgis-user">https://lists.osgeo.org/mailman/listinfo/qgis-user</a><br>
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<br>
<br>
------------------------------<br>
<br>
Message: 7<br>
Date: Mon, 2 Mar 2020 18:00:55 +0100<br>
From: Jürgen E. Fischer <jef@norbit.de><br>
To: qgis-user@lists.osgeo.org<br>
Subject: Re: [Qgis-user] LTR installs<br>
Message-ID: <20200302170055.fz2suskwoyll2kyi@norbit.de><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hi Paul,<br>
<br>
On Mon, 02. Mar 2020 at 11:58:04 +0000, Paul Wittle wrote:<br>
> Qgis-ltr-full is currently still only giving me the option of 3.4. I know<br>
> that I can click twice on the QGIS option instead of qgis-ltr-full and that<br>
> will give me version 3.10.x but how do I know what other library versions I<br>
> should be installing?<br>
<br>
qgis-ltr-full itself is empty and therefore it's version number doesn't really<br>
matter. It's just a meta package that depends on a set of other packages - one<br>
of them is qgis-ltr and that's at 3.10.x.<br>
<br>
Jürgen<br>
<br>
-- <br>
Jürgen E. Fischer norBIT GmbH Tel. +49-4931-918175-31<br>
Dipl.-Inf. (FH) Rheinstraße 13 Fax. +49-4931-918175-50<br>
Software Engineer D-26506 Norden <a href="https://www.norbit.de">
https://www.norbit.de</a><br>
QGIS release manager (PSC) Germany IRC: jef on FreeNode<br>
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