[Qgis-user] RE: Qgis-user Digest, Vol 75, Issue 47
Water Loo
waterloo4134 at hotmail.com
Tue May 15 02:39:05 PDT 2012
Hi: I just use the QGIS software and I find some problem need help. The problems are:-1) How can I draw or plot in QGIS?2) How to load CAD Tools plugin into QGIS?3) The QGIS version 1.7.4 have nice feature, but i can't load the google maps as base map. Everytime I click, the QGIS will automatic close. This happen for me when using QGIS version 1.7.4. Please help. Can you pass to someone which can help me? Thank you Regards.Water.
> From: qgis-user-request at lists.osgeo.org
> Subject: Qgis-user Digest, Vol 75, Issue 47
> To: qgis-user at lists.osgeo.org
> Date: Tue, 15 May 2012 04:16:41 -0400
>
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> Today's Topics:
>
> 1. Postgis query performance (fork)
> 2. Re: Postgis query performance (fork)
> 3. rendering problem in print composer (Jake Maier)
> 4. RE: Qgis-user Digest, Vol 75, Issue 43 (Alister Hood)
> 5. Node Tool not working (Jay Dixon)
> 6. Re: Node Tool not working (Ramon Andi?ach)
> 7. Re: Node Tool not working (Andreas Neumann)
> 8. Re: rendering problem in print composer (Andreas Neumann)
> 9. Loading a Postgis Raster Layer (giannis Nj)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 14 May 2012 19:01:25 +0000 (UTC)
> From: fork <forkandwait at gmail.com>
> Subject: [Qgis-user] Postgis query performance
> To: qgis-user at lists.osgeo.org
> Message-ID: <loom.20120514T205417-830 at post.gmane.org>
> Content-Type: text/plain; charset=us-ascii
>
> Hi all,
>
> I am running Master, trying to query a postgis layer via the attribute table
> (Tiger blocks for the state of WA). It takes many, many minutes to finish, but
> when I run a similar query in psql it takes 4.830 ms
>
> psql query: select geoid10 from block10
> where cityname10 = 'Wenatchee' and gq10 >= 10 order by geoid10;
>
> layer query criteria "cityname10 = 'Wenatchee' and gq10 >= 10"
>
> Is there a way to speed this up?
>
> Also, when I run the "query" from the right-click menu, and choose test, it
> gives me the number of rows without a select criteria (the above criteria should
> yield about 10 rows, but test says ~174000)
>
> Any ideas?
> Thanks!
>
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 14 May 2012 19:56:14 +0000 (UTC)
> From: fork <forkandwait at gmail.com>
> Subject: [Qgis-user] Re: Postgis query performance
> To: qgis-user at lists.osgeo.org
> Message-ID: <loom.20120514T215414-132 at post.gmane.org>
> Content-Type: text/plain; charset=us-ascii
>
> fork <forkandwait at ...> writes:
>
>
> > Also, when I run the "query" from the right-click menu, and choose test, it
> > gives me the number of rows without a select criteria (the above criteria
> >should
> > yield about 10 rows, but test says ~174000)
>
> It seems that if I add a postgis layer with "estimate number of geometries
> from statistics" or what it is called, the query functionality works again.
>
> I could file a bug report if it seemed worthwhile.
>
> Thoughts?
>
>
>
> ------------------------------
>
> Message: 3
> Date: Mon, 14 May 2012 17:11:59 -0400
> From: "Jake Maier" <j.m at jmforestry.com>
> Subject: [Qgis-user] rendering problem in print composer
> To: <qgis-user at lists.osgeo.org>
> Message-ID: <00ed01cd3216$354de8a0$9fe9b9e0$@m at jmforestry.com>
> Content-Type: text/plain; charset="us-ascii"
>
> I created a custom point, (stylist bird house) and it looks like a birdhouse
> in QGIS but when I bring the map into print composer the lines are
> misplaced. Creating the bird house, I lowered respective raised a straight
> line and turned it 90 degrees for floor and ceiling and used a > 90 degrees
> turned as roof. Again it all looks ok when displayed in qgis but when I
> bring it into the print composer all part seem to print on the same level
> and not turned 90 degrees. Strangely the legend prints the houses correctly.
>
> Did I find my second bug or do I just miss an important step?
> Can anyone please help?
> Jake
>
>
>
> ------------------------------
>
> Message: 4
> Date: Mon, 14 May 2012 22:03:13 +0000
> From: "Alister Hood" <Alister.Hood at synergine.com>
> Subject: [Qgis-user] RE: Qgis-user Digest, Vol 75, Issue 43
> To: "qgis-user at lists.osgeo.org" <qgis-user at lists.osgeo.org>
> Message-ID:
> <7C0A9EA7588C0D418C82042EED8127CA4466A5 at AKLSVR1.synakl.local>
> Content-Type: text/plain; charset="us-ascii"
>
> > Date: Sun, 13 May 2012 21:21:39 +0100
> > From: Giovanni Manghi <giovanni.manghi at faunalia.pt>
> > Subject: Re: [Qgis-user] QGIS with geotiff tiles
> > To: pcreso at pcreso.com
> > Cc: qgis-user <qgis-user at lists.osgeo.org>
> > Message-ID: <1336940499.2363.88.camel at sibirica>
> > Content-Type: text/plain; charset="UTF-8"
> >
> > On Sun, 2012-05-13 at 13:16 -0700, pcreso at pcreso.com wrote:
> > > I have a set of geotiffs, comprising several Gb of tiles covering an
> > > area.
> > >
> > > Is there any way QGIS can be configured to use a shapefile as a
> > > pointer to these, much as mapserver can do?
> > >
> > > I don't want to have each tile as a separate layer in QGIS,
> >
> >
> > you can create a virtual raster (catalog) or create the "tileindex". You
> > find both tools in the raster menu.
> >
> > Cheers
>
> If you try a tileindex, check out http://lists.osgeo.org/pipermail/qgis-user/2012-March/015804.html
> Note that if you use an action like I described (instead of using one of the plugins) the exact syntax is probably a little different, depending on what version of QGIS you are running. I gave the syntax for QGIS master, which uses the new "expression builder" expressions.
>
> Alister
>
> ------------------------------
>
> Message: 5
> Date: Mon, 14 May 2012 16:54:46 -0700
> From: Jay Dixon <dixonjm at gmail.com>
> Subject: [Qgis-user] Node Tool not working
> To: qgis-user at lists.osgeo.org
> Message-ID:
> <CALLw+k4XH0X+G2BQm8qSNH8iHdXNkr_0tW5JUAg3G8XtA-6z9A at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> I'm a new QGIS User, so I apologize in advance for the remedial nature of
> my question. Checked the postings to see if this question has come up
> before and it appears that it has not.
>
> Whenever I create a shape file layer to draw shapes, QGIS will not allow me
> to draw polygons using the Node Tool. I used to get some warning message
> about setting precision, snapping, or something similar. I followed the
> instructions in the message with no success. I got tired of seeing the
> message so eventually checked the box 'don't show this message'. Now
> nothing happens when I try to draw a polygon and I can't remember exactly
> what the message said and there doesn't seem to be an option for displaying
> these types of messages again.
>
> Is anybody familiar with how to resolve this problem? Thanks.
>
> Jay Dixon
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> ------------------------------
>
> Message: 6
> Date: Tue, 15 May 2012 08:52:10 +0800
> From: Ramon Andi?ach <custard at westnet.com.au>
> Subject: Re: [Qgis-user] Node Tool not working
> To: Jay Dixon <dixonjm at gmail.com>
> Cc: "qgis-user at lists.osgeo.org" <qgis-user at lists.osgeo.org>
> Message-ID: <7F8634F3-FCB5-48BB-B82D-36136AF4E8E4 at westnet.com.au>
> Content-Type: text/plain; charset=us-ascii
>
> Hi Jay,
>
> "Could not snap to segment"?
> If so, it means that the Node Tool couldn't find anything to work on where you clicked.
>
> My understanding is that the Node Tool is for editing existing shapes. There should be a button two to the left of the Node Tool called Capture Polygon (or Line or Point depending on the shape file type) and I use that to draw a polygon.
>
> Hope that's helpful. If not, it might be useful to the others to know which version of QGIS you're using and your OS.
>
> -ramon.
>
> On 15/05/2012, at 7:54, Jay Dixon <dixonjm at gmail.com> wrote:
>
> > I'm a new QGIS User, so I apologize in advance for the remedial nature of my question. Checked the postings to see if this question has come up before and it appears that it has not.
> >
> > Whenever I create a shape file layer to draw shapes, QGIS will not allow me to draw polygons using the Node Tool. I used to get some warning message about setting precision, snapping, or something similar. I followed the instructions in the message with no success. I got tired of seeing the message so eventually checked the box 'don't show this message'. Now nothing happens when I try to draw a polygon and I can't remember exactly what the message said and there doesn't seem to be an option for displaying these types of messages again.
> >
> > Is anybody familiar with how to resolve this problem? Thanks.
> >
> > Jay Dixon
> > _______________________________________________
> > Qgis-user mailing list
> > Qgis-user at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/qgis-user
>
>
> ------------------------------
>
> Message: 7
> Date: Tue, 15 May 2012 08:19:35 +0200
> From: Andreas Neumann <a.neumann at carto.net>
> Subject: Re: [Qgis-user] Node Tool not working
> To: <qgis-user at lists.osgeo.org>
> Message-ID: <3564aa40f36d3fcfcc94c435b252d679 at carto.net>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> yes - that's right. The node tool is only for editing existing
> geometries. Not to create new ones.
>
> Did you try the node tool on existing geometries or to add a new
> geometry? If you want to add new geometries you need to use the "Add
> Feature" Button in the digitizing toolbar. Once you added a new feature
> (incl. the attributes) than you can start modifying it with the node
> tool.
>
> You should also make sure that the snapping options make sense (if you
> use snapping at all) - either set in map units (meters, feet, degrees)
> or in pixels.
>
> Hope this helps,
> Andreas
>
> On Tue, 15 May 2012 08:52:10 +0800, Ramon Andiñach wrote:
> > Hi Jay,
> >
> > "Could not snap to segment"?
> > If so, it means that the Node Tool couldn't find anything to work on
> > where you clicked.
> >
> > My understanding is that the Node Tool is for editing existing
> > shapes. There should be a button two to the left of the Node Tool
> > called Capture Polygon (or Line or Point depending on the shape file
> > type) and I use that to draw a polygon.
> >
> > Hope that's helpful. If not, it might be useful to the others to know
> > which version of QGIS you're using and your OS.
> >
> > -ramon.
> >
> > On 15/05/2012, at 7:54, Jay Dixon <dixonjm at gmail.com> wrote:
> >
> >> I'm a new QGIS User, so I apologize in advance for the remedial
> >> nature of my question. Checked the postings to see if this question
> >> has come up before and it appears that it has not.
> >>
> >> Whenever I create a shape file layer to draw shapes, QGIS will not
> >> allow me to draw polygons using the Node Tool. I used to get some
> >> warning message about setting precision, snapping, or something
> >> similar. I followed the instructions in the message with no success.
> >> I got tired of seeing the message so eventually checked the box
> >> 'don't show this message'. Now nothing happens when I try to draw a
> >> polygon and I can't remember exactly what the message said and there
> >> doesn't seem to be an option for displaying these types of messages
> >> again.
> >>
> >> Is anybody familiar with how to resolve this problem? Thanks.
> >>
> >> Jay Dixon
> >> _______________________________________________
> >> Qgis-user mailing list
> >> Qgis-user at lists.osgeo.org
> >> http://lists.osgeo.org/mailman/listinfo/qgis-user
> > _______________________________________________
> > Qgis-user mailing list
> > Qgis-user at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/qgis-user
>
> --
> --
> Andreas Neumann
> Böschacherstrasse 10A
> 8624 Grüt (Gossau ZH)
> Switzerland
>
>
> ------------------------------
>
> Message: 8
> Date: Tue, 15 May 2012 08:25:25 +0200
> From: Andreas Neumann <a.neumann at carto.net>
> Subject: Re: [Qgis-user] rendering problem in print composer
> To: <qgis-user at lists.osgeo.org>
> Message-ID: <ff122c2464ca899f2b01a9057b7bdff6 at carto.net>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Hi Jake,
>
> This sounds very strange. Is this only happening in the print composer
> preview or also in the actual print out (PDF or real print out).
>
> Older QGIS versions (1.7 and below) did not show the print previews in
> the print composer with the correct scalings (the map extent was
> correct, but symbol sizes, line-widths and text sizes were not (usually
> drawn bigger compared to the print out)).
>
> In your case I would recommend that you create an SVG file with your
> birdhouse (you can do that in Inkscape or Adobe Illustrator). You then
> can use this bird house SVG file to represent your bird house symbol.
>
> Hope this helps,
> Andreas
>
> On Mon, 14 May 2012 17:11:59 -0400, Jake Maier wrote:
> > I created a custom point, (stylist bird house) and it looks like a
> > birdhouse
> > in QGIS but when I bring the map into print composer the lines are
> > misplaced. Creating the bird house, I lowered respective raised a
> > straight
> > line and turned it 90 degrees for floor and ceiling and used a > 90
> > degrees
> > turned as roof. Again it all looks ok when displayed in qgis but when
> > I
> > bring it into the print composer all part seem to print on the same
> > level
> > and not turned 90 degrees. Strangely the legend prints the houses
> > correctly.
> >
> > Did I find my second bug or do I just miss an important step?
> > Can anyone please help?
> > Jake
> >
> > _______________________________________________
> > Qgis-user mailing list
> > Qgis-user at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/qgis-user
>
> --
> --
> Andreas Neumann
> Böschacherstrasse 10A
> 8624 Grüt (Gossau ZH)
> Switzerland
>
>
> ------------------------------
>
> Message: 9
> Date: Tue, 15 May 2012 08:14:46 +0000
> From: giannis Nj <netsagief at hotmail.com>
> Subject: [Qgis-user] Loading a Postgis Raster Layer
> To: <qgis-user at lists.osgeo.org>
> Message-ID: <DUB106-W481AB3C89677BB24BEADE1AF1B0 at phx.gbl>
> Content-Type: text/plain; charset="iso-8859-7"
>
>
> Hi to all,
>
> I try to Add a raster layer from the Postgis 2.0. I connect normally to the database and I load and display shapefiles correctly, but my raster data tables appears to have no geometry and they can't be displayed in QGIS. Has anyone managed to display normally raster data from Postgis, in order to help me out? Thanks.
>
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>
> End of Qgis-user Digest, Vol 75, Issue 47
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