RE: [Qgis-user] Data-defined rendering of rotated ellipses

2009-04-22 Thread Peter Bange
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/

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[Qgis-user] Swiss Knife. (ogr2ogr GUI and more)

2009-02-09 Thread Peter Bange
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
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RE: [Qgis-user] Network Volumes on OSX not visible in QGIS

2008-12-18 Thread Peter Bange
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)

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-
William Kyngesburye kyngchaos*at*kyngchaos*dot*com
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


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[Qgis-user] spit

2008-09-17 Thread Peter Bange
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

 

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[Qgis-user] Startup problem

2008-09-16 Thread Peter Bange
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) ?

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[Qgis-user] split error

2008-09-16 Thread Peter Bange
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

 

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