Quantum GIS is a user-friendly, cross-platform GIS application licensed under the GNU General Public License.
2
votes
0answers
29 views
Installing knn on PostgreSQL for windows
I am trying to install the extension KNN for clustering as an extension on my PostgreSQL database.
I have downloaded the file
http://www.pgxn.org/tag/analysis
I found instructions on how to ...
0
votes
0answers
17 views
How to set Marker Line symbol for QgsVectoreLayer by using python?
QgsVectorLayer Right click->Properties->Style->Single symbol->click on simple line in tree node ->symbol layer type -> Marker line
Kindly help me to set marker line symbol programmatically by using ...
0
votes
0answers
15 views
Is there free desktop WFS client with BBOX support?
To troubleshoot WFS server (geoserver) with big dataset (global OSM btw) I have tried number of free GIS desktops which work on Mac: QGIS (1.8, 1.9dev), uDig, gvSIG - none of them seems to support WFS ...
0
votes
1answer
18 views
“Request contains a format not offered by the server.” Error when using CRS transformation with WMS in QGIS
When I try to load a WMS layer which has a WSG84 as a default projection and use a CRS transformation on it, it gives this error message:
Request contains a format not offered by the server.
The WMS ...
0
votes
0answers
22 views
How to add attribute from analysis to database mySQL?
I need to prepare a GIS for a customer. They insist to use a MySQL-Database (not the best option, I know). They need to digitize some geometries (areas) and add some attributes. The geometries and ...
1
vote
0answers
40 views
QGIS: Different projection result for on the fly and transformation
I am a bit confused about the result of a re-projection/transformation of a raster in QGIS 1.8 (Lisboa).
WGS84 to WGS84/UTM34N. When I use the 'on the fly' transformation the resulting raster has a ...
5
votes
1answer
65 views
How to implement Spatial Autocorrelation using QGIS or PostgreSQL (or any free application)?
I am a total newbie on the GIS scene so I hope this is not a stupid question.
I have two layers in a PostgreSQL database.
The first layer contains points where events happened in Europe.
The second ...
0
votes
0answers
19 views
De facto QGIS projection for EPSG4326 / 'unprojected' reference systems? [duplicate]
This is my understanding of projections/datums:
To get a map of the earth on a plane you need to project the 3 dimensional earth by 'wrapping' a plane around it in the way that suits you (according ...
2
votes
0answers
38 views
How to create stacked bar/column charts in QGIS?
I know that conventional bar charts (with the bars adjacent to each other) based on feature attributes can be plotted in QGIS. But can you please tell me if there's any way to plot the bars in the ...
1
vote
0answers
21 views
Displaying PDF files associated to feature objects location. [duplicate]
Are there any other methods allowing user to display PDF files associated to points feature object other than using Actions function available to QGIS Layer Properties?
I have more than one thousand ...
0
votes
0answers
19 views
Missing SIP Module in QGIS on Debian Squeeze
Python environment is not loading and shows this error:
Traceback (most recent call last):
File "", line 1, in
ImportError: No module named sip
Versión de Python:
2.6.6 (r266:84292, Dec 26 2010, ...
2
votes
1answer
48 views
How to create a date field in QGIS shapefile
When I create a new shapefile in QGIS, I'm presented with the "New Vector Layer" window, where I specify the Shapefile type (Point/Line/Polygon) and am then able to create attribute fields.
I'm only ...
1
vote
0answers
57 views
Why doesn't dissolve finish? It just stops without error message
I have a shapfile of the whole UK that contained Postcode area, district, and full postcode.
I was going to try and dissolve the regions into seperate business areas by joining a lookup table that ...
0
votes
2answers
44 views
How to make line with arrow head in QgsVectorLayer using python?
I need to draw line with arrow head or after drawn the line i need to make it as arrow head line by using python. or can we set any arrow head symbol for line features by using python?
Kindly help me ...
2
votes
3answers
86 views
How to clean layers from non topological databases?
I'm doing my internship in a consulting office which is switching from MapInfo to QGIS/GRASS 1.8.0.
I posted here a few days ago about the way to clean a polyline from a Lidar data with v.clean.
...
