RE: [Qgis-user] Data-defined rendering of rotated ellipses
I draw wind arrows with different sizes and rotation using a function I defined in the postgres database. Problem with that is that when you zoom into the map, the arrows will grow too ... For my purpose that is no problem, but for you it might be. Peter Bange -Original Message- From: qgis-user-boun...@lists.osgeo.org [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of Andreas Neumann Sent: woensdag, april 22, 2009 2:07 PM To: qgis-user Subject: [Qgis-user] Data-defined rendering of rotated ellipses Hi again, For my same waste-water project I need to render ellipses based on attributes. Two attributes define the two-half-axis of the ellipse, another attributes define the rotation. These ellipses represent manhole points in the waste-water network. I know how to define the rotation of symbols - but is there a way to render ellipses based on the two half-axis? Are there any ideas? If not - I think I will create SVG symbols and classify the different sizes into different ellipse-symbols and apply the rotation. Thanks, Andreas -- Andreas Neumann http://www.carto.net/neumann/ http://www.svgopen.org/ ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Swiss Knife. (ogr2ogr GUI and more)
Hi There, I am doing my best to get people in my organization use Q-gis in combination with a postgres/postgis database. I found out that not many GIS specialists are familiar with (relational) databases. Some of my collegues use ArcGIS, others MapInfo. All the data are stored as shape and tab files. To help them get used to storing (all) their data in a database I developed a tool. I have nick named it Swiss Knife, you can do a number of different things with it: - You can store Q-gis projects in the database - There is a meta-system to store and search information on all the tables you add or change - It allows to redirect information from a number of tables to one single table - It allows you to generate a trigger on tables that will make postgres keep a log of all changes - It generates pgSQLcode that will generate a view on this table and its log that will reconstruct historical situations - It offers a GUI around ogr2ogr that makes conversion between formats easyer - When you generate shape files etc. from a postgis table, you can lock the records exported. This allows integeration of the database with ArcGIS, MapInfo users etc. (I prefer Qgis, but ...), these records can then be read, but not changed by others - When reimporting such shape etc. files again into the database the records are unlocked for edit by others - It can transform a simple ascii rasterfile to a table with square polygons (vectorization) - There is a tool that helps generating vieuws for use with Qgis (can ensure a unique key) - There is a little trick to help adding texts in Qgis easier, it could be expanded - You can create copies of GIS tables The tool is written in REALbasic, I generate executables for Mac and Windows, did not try it for Linux but that should not be difficult. I have no intention of making this tool for sale or something, just help to promote Qgis. Anyone interested ? It is in a beta stage, but it is starting to gain speed ... It needs some tables to run, I will supply these to anyone who wants them. There is also a first draft of a user manual. Peter Bange ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
RE: [Qgis-user] Network Volumes on OSX not visible in QGIS
Nice trick. I found out you also can right-click the file in a finder window and then choose: open-with ... If the Qgis version you choose is already running, the selected file will add a new layer to Qgis. Peter Bange -Original Message- From: qgis-user-boun...@lists.osgeo.org on behalf of William Kyngesburye Sent: Wed 17/12/2008 15:29 To: Andreas Neumann Cc: qgis-user@lists.osgeo.org Subject: Re: [Qgis-user] Network Volumes on OSX not visible in QGIS There is an improvement for this in the works, but for now there is a simple workaround: type /Volumes in the filename box and press return. The list will now show all mounted disks and network volumes. You can drag a volume to the sidebar for a permanent shortcut. On Dec 17, 2008, at 1:39 AM, Andreas Neumann wrote: > Hi all, > > We'd like to store our project files on a network drives, which is > accessible by Linux, OSX and Linux clients. We use samba shares to > distribute the network shares on our Linux server. > > On OSX, however, we cannot access network volumes - somehow they are > not > visible in the qt file dialogue. Are other OS X and QGIS users > experiencing the same issues? > > Thanks, > Aandreas > > -- > Andreas Neumann > Böschacherstrasse 6, CH-8624 Grüt/Gossau, Switzerland > Email: a.neum...@carto.net, Web: > * http://www.carto.net/ (Carto and SVG resources) > * http://www.carto.net/neumann/ (personal page) > * http://www.svgopen.org/ (SVG Open Conference) > * http://www.geofoto.ch/ (Georeferenced Photos of Switzerland) > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user - William Kyngesburye http://www.kyngchaos.com/ "Oh, look, I seem to have fallen down a deep, dark hole. Now what does that remind me of? Ah, yes - life." - Marvin ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] spit
To get people to use Qgis combined with a geospatial database, it is rather important that Spit works well to import all the shapefiles. Up to now unfortunately I have often problems with spit. Now I found out that when a shapefile has both polygons and multipolygons Spit cannot import them into the postgis database. Is this a known problem ? Does anyone know a workaround ? Peter Bange Ecofys Nederland b.v. tel +316 28 130310 ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] split error
When importing a shapefile with points into a PostGIS database with split I get an error which says that split tries to import a MULTIMULTPOINT into the database using SQL. Indeed, a MULTIMULTPOINT does not exist. Can I somehow replace Split with a newer version (I had the same problem with Qgis 0.8 on an other machine / other platform (MAC instead of windows2000). Peter Bange Senior consultant windenergie Ecofys Nederland b.v. tel +316 28 130310 ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Startup problem
Each time I startup Qgis 0.11 I get the error: Couldn't load plugin "geocode" from ['C:/Program Files/Quantum GIS\./python', 'C:/Documents and Settings/pee/.qgis//python/plugins', 'C:/Program Files/Quantum GIS\./python/plugins', 'C:\Program Files\Quantum GIS\python25.zip', '.\DLLs', '.\lib', '.\lib\plat-win', '.\lib\lib-tk', 'C:\Program Files\Quantum GIS', '/usr/share/qgis/python'] Is there a simple solution (something with the plugins) ? ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
RE: [Qgis-user] morphing two polygons
If your data are in a Postgres/PostGIS database I would suggest you could create a (smart) view that interpolates from Polygon A to polygon B. Mayby you need to make a (little) function for this. Peter Bange -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of cfarmer Sent: woensdag, juni 11, 2008 7:47 AM To: Ken Sanderson Cc: qgis-user Subject: Re: [Qgis-user] morphing two polygons Ken, I have been thinking about a similar problem myself in terms of spread. This ends up being pretty much the opposite to your problem I guess... What is is that you would like to do with the intermediate polygons? Is it just for visualization, or would you need actual polygon files to work with? I would be interested to hear more about what you are doing: feel free to email me directly about this... I may have a solution in the works for you ;) Carson > Hi all, > > I have been mucking around with some thoughts on how I might morph from > an original polygon to a larger polygon, showing the intermediate steps > in between and thought I would see if anyone has done this in QGIS or > had any suggestions. > > So I have polygon A that shows a large blob, polygon B that shows that > same blob much reduced in size. Assuming an even reduction in size, I > want to create a polygon of that lake at different intervals of change > between A and B. Hope that makes sense. > > My original thinking was to pretend the two polygons are contour lines > and interpolate between them, then convert the interpolated countours to > their own polygons. Any other thoughts on this? > > Thanks, > > Ken > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user > Carson Farmer Spatial Pattern Analysis & Research Lab (SPAR) Department of Geography, University of Victoria PO Box 3050 STN CSC Victoria, BC, V8W 3P5,Canada www.geog.uvic.ca/spar [EMAIL PROTECTED] ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Action tabs on windows
Does anyone has experience with the use of action tabs on windows (windows 2000 in particular): I managed to imply actions that start up an application (for instance Firefox), but all the applications I tried close again within a fraction of a second. For instance I added an action like: "C:/Program Files/Internet Explorer/IEXPLORE.EXE", Using it I only get a glimpse of Explorer and that was it. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
