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

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3
votes
1answer
396 views

KML in QGis with additional Data [closed]

i´ve developed a android app that extracts the exif-information of a photo and creates a KML-file (Placemark) - some additional information like camera-type, focal length,... are stored in the tag ...
1
vote
1answer
336 views

Change kml tag structure [closed]

I am working on google-maps kml. I have several shapefiles and using QGIS i have converted it to kml files. When i export the kml (save as kml in Qgis). It contains tag like <SimpleData ...
2
votes
0answers
231 views

How to Install GRASS Addons to use in QGIS [duplicate]

WIN 7 QGIS 1.8.0 GRASS 6.3.4 I want to use r.viewshed in QGIS. therefore i want to install it in GRASS by using the GRASS interface. Followin Error appears. g.extension.py extension=r.viewshed ...
2
votes
2answers
529 views

Suitable projection for a map of Japan

I'm making a map of Japan in QGIS which will span UTM zones 54 and a small part of zone 53 (central and North Honshu). I'm using Natural Earth raster and shape file datasets with some WSG84 based ...
1
vote
2answers
123 views

QGis Print Composer: layer symbology not displayed

Exactly the same as this problem from way back, only I've had this from 1.8.0 to present (2.1.0 master). Yay, symbols: Boo: no symbols, cue MS Paint: Anyone know why this might be or have the ...
1
vote
0answers
133 views

Is there an analog to ArcGIS' “Neighborhood Toolset > Point Statistics” for QGIS?

Quick procedural question- is it possible to create a raster with QGIS in which the raster cell value is assigned by summing the number of vector points that are within a certain radial distance of ...
1
vote
1answer
136 views

How to duplicate this QGIS workflow with gdal/GRASS? (reproject and crop a raster)?

I have a number of rasters (rgb images) that I want to re-project and crop. I have established a workflow for doing this in QGIS, but I'd like to do it using gdal modules, because the output is being ...
4
votes
0answers
289 views

Weather conditions forecasting / interpolation

I'm trying to carry out weather conditions interpolations. I have information of 92 weather stations for 800,000 km2. As you can imagine the extension of land is huge and I need some kind or weather ...
1
vote
1answer
125 views

Trying to compile QGIS but it complains it can't find QGIS library

I'm trying to compile QGIS in Windows7 with a MSYS, with the objective of making a QGIS Windows App using the API. I am using this document. I'm using CMake-GUI and it gives the error Warning ...
1
vote
0answers
314 views

Does qgis_mapserv.fcgi segfault because ECW data is used?

I've compiled qgis from source, and when I call qgis_mapserv.fcgi in my browser with REQUEST=GetProjectSettings (and my map file set via map=) is returns the XML correctly. But if I then try to ...
5
votes
1answer
935 views

How do I clip OSM basemap with a polygon?

I've created a map in qgis 2.0. The map uses the OpenLayers plug-in to add the OSM layer as a basemap. I would like to restrict the basemap to be visible only inside a given polygon defined in a ...
2
votes
1answer
2k views

How to resample GeoTIFF images to the same resolution?

I have two geotiff images that I would like to resample the same resolution. If I use ArcGIS this would be easy to do. But using QGIS I don't know how to do this. Some help will be very appreciate. ...
0
votes
1answer
159 views

QGIS Cloud in QGIS 2.0 missing and 2.0 Crashing [duplicate]

Is QGIS CLoud still missing off QGIS 2.0. I am having a lot of issues with 2.0. on another matter I cannot load print templates without the system crashing. Are templates non compatible. When i am ...
6
votes
3answers
2k views

How to fill a hole in a multi-polygon layer on QGIS 2?

I need to fill a hole in a multi-polygon layer on QGIS 2.0. I've set the snapping option for the layer as follows : mode: to vertex and segment tolerance 4 pixels avoid intersection "enabled" ...
3
votes
1answer
507 views

How do I export labels as editable text objects to be used in Illustrator?

How do I export labels as editable text objects to be used in Illustrator? QGIS 1.8 Thanks.
2
votes
1answer
1k views

Canvas Units to Degrees, Minutes, Seconds

I am using the WGS 84/UTM coordinate sysytem. When I go to > Project Properties / General / Canvas Units to Degrees, Minutes, Seconds my coordinates are wrong. I am using QGIS 2.0.1
1
vote
0answers
39 views

how to find angle between two points in QGIS? [duplicate]

I want to find angle between two points(LatLong) in QGIS. For example Point A = 80.2065,13.0876 Point B = 80.2064,13.0874 My CRS is WGS84 EPSG : 4326. I am trying to provide driving direction this ...
1
vote
0answers
140 views

Different result featureCount() on QgsVectorLayer QGIS 1.8 vs QGIS 2.0?

I use the following code in a layer action: <uri definition etc> sql = 'id = "[% "id" %]"'; uri.setSql(sql); layername = 'TableName [% "id" %]'; vlayer = ...
4
votes
2answers
2k views

Installing qgis 2.0 and saga 2.1 on ubuntu 13.04

I have been trying to get this working for a few weeks now. I am trying to install QGIS Dufor (2.0.1) and Saga GIS from the Unstable branch of the UbuntuGIS PPA. When I attempt to do this I get the ...
3
votes
1answer
377 views

How to link R script to Algotithm output in QGIS modeler?

I constructed a simple R script for QGIS modeler (.rsx) that calculates groupwise summary statistics of a vector layer table (sum by field "subject" and "FRC"). The script correctly works. When ...
4
votes
3answers
799 views

no Get More in Plugin Manager in qgis 2 + ubuntu 13.04

After upgrade of qgis 1.8 to qgis 2.0 I couldn't find the choice "Get more" in Plugin Manager and I can't install plugins.
3
votes
3answers
634 views

How to color-code geology maps with given CMYK colors?

I'm trying to understand whether it is possible to corectly display colours in British Geological Survey maps. Our client has a licence to use the shapefiles but unfortunately BGS don't provide SDL ...
1
vote
1answer
448 views

How to export a geojson file with correct order of coordinates?

I was testing rendering of data via GitHub in geojson format, because I wanted to use it for INSPIRE data. INSPIRE data are in GML 3.2.1 format. I've downloaded one of datasets from ...
8
votes
2answers
2k views

Split a feature when intersecting with a feature of another layer using PyQGIS/Python?

I have a buffer layer (green polygon) which I want to split to two polygons whenever it crosses a barrier (blue line). I have been trying to use "splitGeometry" method, but I just can't get it to ...
1
vote
1answer
356 views

How to debug “Unable to load GDAL library” error in QGIS 2.0?

I have a problem with r.surf.contour. I create a DTM with v.to.rast.attribute and then use the r.surf.contour and it works fine in QGIS 1.9 but with QGIS 2.0 doesn't work. I have a contour shapefile ...
2
votes
1answer
191 views

How to load a memory layer into map canvas an zoom to it with pyQGIS?

I would like to load a vector memory layer into the map canvas with pyQGIS. Background is, I create a memory buffer layer around point data. While iterating the points I would like to visualize the ...
1
vote
1answer
205 views

grass algorithms no longer run in QGIS/Sextante

I used to be able to run GRASS algorithms in QGIS 2.0 via Sextante (Ubuntu 12.04) but not anymore. Initially I would double click on any grass algorithm and the execution would stop with: "WELCOME TO ...
0
votes
0answers
76 views

QGIS2.0 plugin with freeglut

Has anyone been successful in using QGIS 2.0 plugin which uses freeglut? I have tried all of the below to import freeglut but none of the freeglut functions are recogonized in my plugin. import ...
3
votes
4answers
1k views

How to import polygons from OSM to QGIS?

I am trying to import Polygons from OSM to QGIS 2.0, but so far I have no idea how to do that. E. g.: Kisterseg auf Tatabanya in HU: http://www.openstreetmap.org/?relation=1027806 Is there any fast ...
1
vote
1answer
206 views

Why can't I connect to my new local PostGIS database?

I'm trying to connect to local PostGIS instance (PostgreSQL.app on mac) with QGIS 2.0, and it gives general connection errors. Connection with same parameters with other clients (psql, PGAdmin) is ok, ...
7
votes
4answers
286 views

Automatic matching of two street networks

I'm faced with the problem of matching two street networks. I have these two differently sourced networks. The links in each network can be segmented, i.e. there is not necessarily a single whole link ...
1
vote
2answers
377 views

How to use the QGIS Linear Referencing Plugin?

I'm having trouble getting the Faunalia Linear Referencing Plugin set up properly in QGIS 1.8. I've gotten to the point where I can do the Calibration, but I get a few warnings about missing lines, ...
3
votes
2answers
331 views

How do I export XY data from QGIS to shapefile?

How do I export XY data from a comma-delimited file to a shapefile using QGIS?
2
votes
1answer
508 views

Kernel Density Error in QGIS Processing

I have been getting this error when trying to create kernel density maps using QGIS 2.0.1 and SAGA 2.1.0. It seems to occur only when the extent is large, i.e. the entire state of Texas. If I do it on ...
1
vote
1answer
47 views

Is it possible to extract many municipalities out of a state map at once?

Is it possible to extract many municipalities out of a state map at once? I mean not to have to do the QUERY for each and one of them? Thanks in advance.
2
votes
0answers
90 views

Can Esri ASCII Input files be Aligned with Track Heading in QGIS?

Using QGIS to input Esri ASCII data files, I uploaded many small files, each file representing a second of data: 16 sensors X 25 lines. Each file uploaded creates a small rectangle on my larger map ...
2
votes
1answer
84 views

Why does vector grid creation crash?

Im trying to create a vector grid for a municipality. Do you know why does it crash? The scale I'm using is 1:1000000. Any tips?
1
vote
1answer
443 views

Problem with GDAL_WMS QGIS connecting to an ArcGIS Server?

I've been working, trying to get QGIS (v2.0 32bit) to connect to an ArcGIS Server service using the GDAL_WMS xml file. This is the service I'm trying to connect to: ...
1
vote
0answers
61 views

Why is the attribute table alphabetizing out of order? [closed]

I'm having a problem with the attribute table alphabetizing out of order in QGIS, while working on a Macbook Pro. First, I know that clicking the top of the column will alphabetize in ascending or ...
1
vote
1answer
132 views

Changing border thickness QGIS

Does any one know how to stylish a map using QGIS? Im working on some maps but when I project them in Stat Planet Plus the lines look very pointy, not curvy at all and it looks really unprofessional. ...
2
votes
1answer
164 views

Line calculation from KML file

I am a beginner in QGIS 2 and Mac OSx Mountain Lion I need to get line length in meters for different gps waypoints. 1 I import kml file to create a new vector shape (this works fine). The projection ...
1
vote
0answers
110 views

Possible to rollback from QGIS 2.0.1?

I'm running Ubuntu 12.04 LTS. Unfortunately Ubuntu has automatically upgraded my QGIS from 1.8 to 2.0.1. And 2.0.1 which creates GeoJSON files that OpenLayers cannot parse. Would be best for me to ...
4
votes
1answer
262 views

How to programmatically detect a canvas refresh or pan/zoom in QGIS

For my python plugin I would like to remove a VertexMarker when the user pans/zooms there map. Which is the best way to detect a canvas refresh or pan/zoom carried out by the user? Can you suggest ...
3
votes
2answers
875 views

QGIS 2.0 Plugins missing [duplicate]

At the risk of a series of downvotes but I have just installed QGIS 2.0 after using 1.7.4 and 1.8 previous. It looks great but there are a lot of plugins missing. I understand from the install that ...
4
votes
1answer
64 views

QGIS 2 bold Layer names?

I am currently working with QGIS 2.0 in an Ubuntu environment. I have a quite large project with many different layers and layer-groups. By default the layernames are in bold fonts and the groups are ...
0
votes
2answers
83 views

How to find polygons with area size between 300 and 500?

I have bunch of polyygons, all with different area-size. I want to find polygons with areasize between 300-500. Normally I would pick out everyone above 300 (query1) and then commit a new query on ...
3
votes
2answers
442 views

Georeference vector linework

I'm new to GIS and a lot of searching didn't answer my specific question so far, so I hope someone can help me here. What I want to do is creating a small web application to visualize election ...
1
vote
3answers
709 views

How to export xy-coordinates from a line segment

I need an export of xy-coordinates of line segments (Quantum GIS). I found an answer to a similar question here but that concerned only xy of the first and last vertex of a line segment. But I need ...
0
votes
1answer
186 views

How to import and patch multiple ASTER files in QGIS?

I'm a new user and just began with GRASS, where I learned to import 30x30 resolution ASTER files and then patch them (the six I'm working with) into one map. On QGIS, it doesn't appear that there's a ...
7
votes
2answers
1k views

How to specify fields to export from QGIS?

I'm using QGIS 2.0.1 and am connected to a MS SQL Server spatially enabled database (not ESRI). I am able to connect to the layer and load it into my TOC just fine. I have hidden a number of fields ...