QGIS is a user-friendly, cross-platform GIS application licensed under the GNU General Public License.

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25 views

Why can I not start Quantum GIS? [duplicate]

Possible Duplicate: How to fix QGIS error “Entry Point could not be located”? Why can I not start Quantum GIS? What do I do about this following error message? "The procedure ...
2
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1answer
595 views

merge raster images: error message procedure not found

I am using QGIS 1.8.0. Whenever I try to merge raster images I get the following error message: Traceback (most recent call last): File "C:\PROGRA~1\Quantum GIS Lisboa\bin\gdal_merge.py", line 36, ...
6
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1answer
3k views

Is there a way to export data with coordinates from QGIS to a csv file

I have saved waypoints from my Garmin as gpx and have successfully imported them into QGIS. Is there a way to now export the layers into a csv file with coordinates? I've tried the export to csv but ...
2
votes
1answer
314 views

how to modify shape extents in qgis

I want to change the shape extent of some shape files, I would like to know how to do it in Qgis, since I rasterized some shapes and when I used the calculator to add them, the resulting raster had ...
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0answers
34 views

Modifying shape extents in qgis [duplicate]

Possible Duplicate: how to modify shape extents in qgis I want to change the shape extent of some files, I would like to know how to do it in Qgis, since I rasterized some shapes and when I ...
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2answers
199 views

Break between two raster layers (topographic maps)

I have the following problem [in QGIS]. In displaying two raster layers (topographic maps), a white area appears between the two. If I apply transparency to one of the layers, this white area still ...
4
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1answer
186 views

Dropdown menu to select vector layer from current displayed layers in qgis

I'm trying to write a python plugin to create an input file for an urban climate model out of three shape files. One of the shape files contains the buildings (polygon), one the trees (point), and the ...
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2answers
433 views

Is there an automatic function in QGIS to package all shapefiles in a project for transferability?

In my project, I use a lot of geodata from different directories. Now I want to give the QGIS project to a colleague (eg on a CD). Is it possible to copy the shapes from different directories ...
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1answer
1k views

Why can't I install python-qgis on Ubuntu 12?

I am with ubuntu 12 and Qgis 1.8. I have installed QGIS and grass plugin but I can't install python plugin. How to install python plugin with dependeny in Ubuntu? ~$ sudo apt-get install python-qgis ...
2
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0answers
57 views

How to call a method when self.iface.actionSelectRectangle().trigger() is released?

In my QGIS python plugin I use "self.iface.actionSelectRectangle().trigger()" to select features. I also have a button which changes the attributes of the selected features. Is there a way instead ...
0
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1answer
437 views

Print Composer Problems with Export as PDF [duplicate]

Possible Duplicate: QGIS Crashes when writing to PDF My QGIS crashes during the export of maps to pdf. I already uninstalled and installed QGIS twice. The function worked for several times ...
3
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1answer
238 views

What is status of OpenSceneGraph (OSG) plugin for QGIS? [closed]

Does anyone know if the OSG plugin for QGIS is working? If so does anyone knows what the future plans is for OSG plugin in QGIS? I am using QGIS version 1.8.0-Lisboa. I keep getting the following ...
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0answers
226 views

How to access tiles in Tilecache using QGIS?

I've Mapserver set up with a mapfile that points to a tileindex. In QGIS I can call the mapfile and view the rasters dynamically. I've got access to tilecache and I've seeded the same mapfile/rasters ...
2
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0answers
164 views

qgis and embedded ajax (bing map)

I need to load in a docked QWebView this html: < html > < body > < iframe width="100%" height="499" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" ...
4
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1answer
1k views

Qgis - How to change GDAL version

im working on Ubuntu 12.04 server; i noticed this when i installed additional support for ECW format into the GDAL 1.9.1 which worked ok. Then i tried to add ECW files to Qgis but it said they still ...
2
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1answer
236 views

Is it possible to set a layer style (e.g. set the color ramp) before loading the layer using pyQGIS?

I am implementing a tool which allows an user to calculate some statistics with some data from the registration office. My question is, can I set some layer styles using pyQGIS? The analysis part is ...
2
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1answer
1k views

encoding problem with QGIS 1.8 and CSV import

I have following problem with QGIS 1.8. Lisboa (standalone installer, Win 7 Pro 64bit) - I import CSV - text in CP1250 separated with ";" and using "," as decimal separator. I correctly set the ...
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0answers
115 views

How to export dxf of window view from postGis MasterMap layer

I have managed to get qgis to show my Mastermap data which is stored in a postGis database. It's national coverage so seems to take ages to load but that's another question. I basically want to ...
5
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2answers
1k views

How to compare two DEMs and show their difference?

I want to compare my DEMs (ASTER GDEM2 and SRTM4.1). I know, that the GDEM has some extreme "holes" with totaly wrong elevations (I found 3 of them in my working area). Now I need to know, if there ...
3
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3answers
2k views

How to delete duplicate lines?

I was wondering if anyone could help. I have a tab file in MapInfo consisting of just polylines. Each is meant to have its own reference number, however some are duplicated (e.g two lines occupying ...
5
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1answer
3k views

How to configure QGIS Sextante to use SAGA?

I have been trying to set up SAGA to work using Sextante in QGIS. I have followed the instructions to configure SAGA in Sextante, with the following input in the path for the SAGA folder C:\Program ...
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6answers
4k views

How to georeference a vector layer with control points?

I have a non-georeferenced vector layer that I need to be georeferenced. With raster layers the task is easy and straightforward, but I have no idea what should I do with my vector layer. I have a few ...
2
votes
1answer
176 views

Keyboard shortcut for GPS data capture in QGIS

I would like to setup keyboard shortcuts for GPS data capture with QGIS. Using GPS Information dialog box, I could use Mouse-Left-Click to "Add feature" and "Add track point", but I would like to ...
4
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4answers
240 views

How to measure without coordinates?

My current Project is to "map" a turntable in qgis. I know, very unlikely but that's what my teacher wants. My teacher also wants me to measure something in this project (Very specific, isn't it?). ...
4
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2answers
543 views

How to enable GRASS plugin in QGIS 1.8.0 (Linux Mint 13 - 64 bit)?

Every time I enable GRASS plugin in QGIS (Plugins -> Manage Plugins -> GRASS), I got a message: Exception - G_getenv(): Variable GISDBASE not set. I googled and found some information here but don't ...
3
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1answer
909 views

How can I use MOBAC atlases in GIS Software (e.g., QGis, uDig)

How can I use the output from MOBAC (Mobile Atlas Creator) as background layer in open source desktop GIS software (e.g., QGis or uDig, TileMill etc.)? My goal: To put my question into context: I ...
2
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3answers
316 views

How to save a QGIS workspace with database link for offline use?

Is it possible to save current workspace of QGIS for offline usage like in mapinfo? My workspace has link to database. and when I reopen workspace unlink in mapinfo it can't open it.
4
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2answers
298 views

QGIS Two Raster Data Sets with black line between the two sets where they join?

Where the two Digital Raster Quad sets (topo maps 7.5 Quad) overlap there is a significant thick black line (not a single line but wide and is wider the further south you go on the map). I am looking ...
2
votes
1answer
619 views

How to split geometry collection into its items using Python and QGIS API?

I'm getting some geometries via intersecting lines by polygons (somewhat blindly - I don't really know if intersection exists and actually I don't need to know) using python and QGIS API: ...
3
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1answer
1k views

GDAL VRT Format - do i understand the concept?

Okay, so im a little fed up with different raster-in-database solutions that I tried over the last 2 weeks which don't work currently (Postgis raster) or cant handle my volume of data (Rasterlite), so ...
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2answers
380 views

Problems with upload waypoints to GPS unit

How can I upload waypoints from QGIS to my Garmin GPSmap 62 by using GPS Tools in plugins? I only manage to do it with an older Garmin GPS. Regards Kaja
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3answers
1k views

Define area of study in Google Earth before Import in Qgis

First, I would like to thank you, for your answers. Here is my problem: I wish implement a GIS solution to manage a water and wastewater network. In my project I have any map for use it like ...
3
votes
2answers
1k views

Extract WMS Data

I am trying to extract geological information from the onegeology portal unfortunaley most of the data there only consists of WMS data. For example, is it feasible to extract a particular legend ...
2
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2answers
571 views

Trimming Specific Text Values in QGIS Field Calculator

Sorry if this is a dumb question, but I am wondering if there is a way to copy the text from one field to a new field, but eliminate specific words. For example: **Old Field** ...
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1answer
82 views

Reordering Category Layers in QGIS

I was wondering if there is a way to reorganize the layers when applying a style based on a categorizing value? I have many values, but I would like to rearrange them alphabetically. In ArcMap there ...
4
votes
2answers
1k views

How to draw polygons in QGIS perfectly aligned

I would like to draw polygons for an indoor map test and would like to draw perfect rectangles (horiz. and vertical edges). How to set QGIS options on polygon edit /draw to do that ? thank you for ...
5
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3answers
5k views

How to add my own symbols to the single-marker or svg-marker selection list?

I was creating an arrow for a line layer. So I was adding the triangle as a single marker to the line. So far so good. But when I would like to create my own single-marker symbol or svg marker how can ...
10
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2answers
1k views

How to buffer a line with different distances for left/right sides

How can I buffer a line in QGIS using one attribute for the left side of the line and one attribute for the right side of the line? I am trying to buffer a river with its bank width, which is ...
3
votes
2answers
930 views

Can I fix 'qodbc3:unable to execute statement' when querying SQL Server 2008?

I was testing features of QGIS and its really cool.I tried to query each table using right click and query but I can't query sql server 2008 database : Error: An error occured when executing the ...
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0answers
315 views

Import KML or KMZ files into Qgis [duplicate]

Possible Duplicate: Can QGIS open KMZ files? Is it possible to import Google Earth generated KML or KMZ files into QGIS and then use these files as background data for a project? I intend ...
4
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2answers
2k views

Adding a hotlink to an attribute field in QGIS

How to add hotlink to QGIS? I saw this but had some problem. I want to open network location like \\fileserver\filefolder\file1.excel but it ends with error. Edit: The network location is stored ...
3
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1answer
581 views

QGIS installation on lubuntu (LXDE)

I'm unable to install QGIS on lubuntu (LXDE desktop). This is what it says on the terminal: Package qgis is not available, but is referred to by another package. This may mean that the package is ...
2
votes
3answers
407 views

Problem with v.in.ogr.qgis in QGIS

I received a shapefile containing data from a topographic survey of a farm. The file has a lot of lines containing elevation data. The person who made the survey did it with a GPS set up on a ATV. ...
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1answer
390 views

Is there alternative to tools like MIPT and Discover in QGIS?

I am getting fond of QGIS but I am unable to find tools for frequency plannig and other stuff. Are there any alternative to MIPT and Discover of Mapinfo in QGIS? MIPT is used for frequency planning ...
3
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3answers
1k views

import kml in qgis : kml.kml is not a valid or recognized data source

When I import kml.kml (generated from ArcGIS) into Google Earth, there is no problem. However, when I try importing this file as vector layer in QGIS 1.8 on XUbuntu 12.04, I get this error : kml.kml ...
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1answer
342 views

Error occured decoding the epsg code - 3857 (Web Mercator) [closed]

I'm trying to add the following wms service to QGIS using EPSG:3857 and get the following error: Service (running on L/A/P/P geoserver): http://66.228.57.208/geoserver/wms?tiled=true or non-cached ...
3
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0answers
166 views

How to do bivariate or multicriteria line symbolization in QGIS?

Bonjour, je cherche à faire sur Qgis un tracé d'un itinéraire avec comme légende une couleur pour le type de route et la largeur du trait pour la fréquentation de cette route. J'ai vu qu'il était ...
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4answers
844 views

How to use Dealul Piscului 1970/Stereo 70 (EPSG:31700) with Google Mercator?

To open Google layer I use OpenLayers 0.93 plugin, the base layer has CRS "Dealul Piscului 1970/Stereo 70 (EPSG:31700)", the Google layer is set to "Google Mercator (EPSG:900913)". The same base ...
4
votes
2answers
997 views

Snapping two polygons together

I have a problem with two vector layers, both polygons. I have been digitising an historical map which contains large areas called townlands, filled by smaller areas called fields. I digitised both as ...
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1answer
184 views

Qgis mapserver - Can it use plugins you use in qgis desktop?

Im thinking about developing a small python plugin for qgis which would access postgis raster database and return data via ST_AsPNG() for example. But since i need this in my wms, would it be possible ...