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

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3
votes
2answers
8k views

How to visualize grd files in QGIS?

How to visualize grd files in the software QGIS?
3
votes
2answers
4k views

How to load MrSID raster layer in QGIS on Mac OS?

I have just upgraded QGIS to 2.0 and now I can't load my SID raster layers. I now remember that getting them into 1.8 was a performance but I can't remember all the details. I have downloaded the ...
3
votes
2answers
479 views

Display two-dimensional color gradient for two different quantities

I have two overlapping raster layers. One contains quantity A from 0 to 100, and the other contains quantity B from 0 to 100. I'd like to create a map displaying both sets of data at once based on a ...
3
votes
4answers
383 views

Plugin causes QGIS to crash on startup

I get the message "the plugin will be disabled because it crashed QGIS during last startup." Which plugin? None is identified. I'm a bit of a rookie so not sure where to look to solve this. Running on ...
3
votes
1answer
134 views

WMS not viewing in QGIS

I am trying to import WMS from geoserver link to QGIS 2.8.4 & the latest 2.12.1: http://geoportal.asig.gov.al/Services/host/host.ashx?url=http://localhost:8080/geoserver/asig/wms& QGIS get ...
3
votes
1answer
131 views

What is the replacement for 'setColorShadingAlgorithm' in QGIS 2.6?

I have been struggling with setting the colorshadingalgorithm for a raster layer in QGIS with no success for the past few days. The QGIS cookbook seems to be pretty outdated. Anyways, the code that I ...
3
votes
2answers
1k 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 ...
3
votes
1answer
1k views

How can I show points on the same coordinate as e.g. a bigger symbol in QGIS?

I use QGIS 1.8 for mapping archaeological findings. Some of the findings within one layer are located on the same site and therefore have the same coordinates. Therefore you just see one point instead ...
3
votes
1answer
110 views

How to create a printable data sheet when using edit widget “value realtion” in QGIS 2.0?

I created a spatiaLite Database with a point layer (every point is a tree). Additional I created several tables to fill the columns of the spatial layer with attributes using the editing widget “value ...
3
votes
2answers
155 views

Fixed distance between two contours - Qgis 2.14.1

There is a possibility, when you select a contour line and give a fixed length of line, this line connects automatically to the next contour lines? I have two other questions on this subject but I do ...
3
votes
2answers
292 views

Combining MS Office with GIS

I would like to incorporate MS Office into my GIS program. I have been using QGIS and was wondering if this would be possible? I am trying to create a one stop shop for my staff to be able to ...
3
votes
4answers
2k views

Can I use QGIS with Qt5?

I want to use QGIS with Qt 5.But i don't know the exact relationship between Qt and QGIS.Will there some problems if i use qgis with qt5 or it will not depand on it...
3
votes
1answer
5k views

Replacing all null values from attribute table with zeros using QGIS?

I have a new column in my attribute table with a lot of null values and I want to replace all them to zeros. How can I do that in field calculator? I'm using QGIS 1.8
3
votes
1answer
203 views

Can QGIS plot coordinates in Degrees-Minutes format?

I have a .csv file of coordinates that looks like this: Is there a way for QGIS to plot coordinates formatted like this? I've tried Adding a Delimited Text Layer... in QGIS, but do not see any ...
3
votes
2answers
2k views

How to set the Identify Feature tool in QGIS 2.4?

The Identify Results window does not appear when using the identify feature tool in QGIS 2.4. I guess there's a check box somewhere I need to check/uncheck, but the settings of the tool changed ...
3
votes
3answers
617 views

How to install the QGIS Statist plugin in Mac OS X?

I'm trying to install the Statist plugin. I'm running MacOSX 10.7.5. with Python 2.7.3. and Numpy 1.5.1. I have also installed matplotlib 1.1.0 (for python 2.7). When I try to install the Statist 1....
2
votes
1answer
475 views

How to link my QGIS plugin main class to mouse events from a custom Tool?

I Have two files one is mouseevent.py and the other one main.py. class MouseClick(QgsMapTool): canvasDoubleClicked = QtCore.pyqtSignal(object, object) def __init__(self, canvas,layer,...
2
votes
1answer
2k views

Getting polygon shapefile node coordinates and point order

I am trying to get the coordinates of each node of a polygon in QGIS. What I basically did is use the following tools: Vector -> Geometry tools -> Extract nodes Vector -> Geometry tools -> Export ...
2
votes
2answers
2k views

How to install OpenLayers plugin in QGIS1.8

I am using QGIS 1.8.0 on Windows 7 (32-bit) but am unable to install the OpenLayers plugin. The Python plugins menu does not include OpenLayers on the plugin list. Can it be somehow added manually?
2
votes
1answer
1k views

Why does my PostGIS query fail with “current transaction is aborted”

I'm trying to create a vector layer in a QGIS project using a PostGIS query. QGIS is returning the following error: Query failed 1 cursor states lost. SQL: CLOSE qgisf1 Result: 7 (ERROR: ...
2
votes
1answer
4k views

Configure Orfeo Toolbox to work with QGIS v2 Windows 7 from standalone installer

I have asked this question on the QGIS mailing list, but have not yet had a satisfactory result. The QGIS manual at http://www.qgis.org/en/docs/user_manual/processing/3rdParty.html is confusing about ...
2
votes
5answers
4k views

Where to find qgsaffine in the menu?

I installed the plugin qgsaffine but cannot find the entry in the menu bar. Where do I find this. Can anyone here help me with this? best regards desputin
2
votes
2answers
209 views

“Phantom” features showing up in QGIS 2.4

I tried searching for this, but am unsure exactly what my problem is. I am using QGIS 2.4 on Windows 8.1. I have a project in which I have been digitizing from OpenMaps. Last night I was doing some ...
2
votes
1answer
11k views

Python :ImportError: DLL load failed: The specified module could not be found

I am working on Python plugins for QGIS. I set my variables as PATH :=C:\OSGeo4W\apps\qgis;%PATH% PYTHONPATH:=C:\OSGeo4W\apps\qgis\python But when I try to run my .py file in IDLE I get an error ...
2
votes
1answer
48 views

Displaying layer after using QgsGeometryAnalyser?

I have already discovered this class, but I am confused. If I am doing a analysis on the current layer, I don't know why it is not displaying on the map. lyr =iface.mapCanvas() layer = lyr....
2
votes
2answers
410 views

Why does the buffer take up whole screen?

I am trying to create buffers around the Hurricane Sandy path I created in QGIS (points are lat/long). I have both points from each day she was tracted and the line I created from it with Points2One....
2
votes
1answer
796 views

Delete duplicate geometry in postgis tables

After - I dont know what happend - all my entry's in my postgis tables are doubled! I tryed that to delete them but it does not delete any/all duplicates: DELETE FROM planet_osm_point WHERE ...
2
votes
1answer
451 views

How can I solve 'Handle bad layers' error when using OpenStreetMap in Qgis?

I can easy download Portion of maps from OpenStreetMap, save them etc. Once I reopen the same map I get a message that says "Handle bad layers" for all the OSM files. What I am doing wrong?
2
votes
1answer
89 views

Identify geographic location to points

I am quite new in QGIS and I really need your help. I have a map of Kenya divided into 68 districts and I have coordinates of 30.000 schools. The points have one variable besides the latitude and ...
2
votes
3answers
1k views

Rasterize line shapefile

I'm trying to convert a line shapefile to a raster image at QGis, but my attempts have been unsuccessful. I've tried to use Raster/Conversion/Rasterize and SAGA/Grid - gridding/Shapes to grid, but to ...
2
votes
0answers
31 views

Unable to change band rendering style of rasters in QGIS 2.10.1 [duplicate]

Apologies, I am new to QGIS and there may exist a simple solution. I have multiple DEM raster files (.tif) added to my map. However, I am unable to alter any of the style options under the "Band ...
2
votes
0answers
44 views

Set Snap Mode with PyQGIS

I am trying to set snap mode within QGIS plugin. So far, I have tried: QgsSnappingUtils().setSnapToMapMode(QgsSnappingUtils.SnapAdvanced) and QgsSnappingUtils().setSnapToMapMode(2) without ...
2
votes
2answers
179 views

QGIS - Edit UI - Python Init function localization with QTranslator

I have interaction with layer defined by custom designed UIs. In layer properties the following settings: Edit UI - customline.ui and Python Init function: customline_set.py. #coding: utf8 from ...
2
votes
1answer
232 views

How to apply the same style to different columns?

For many of my datasets I have the same imported data duplicated numerous times, each iteration displaying the data values for a different column (in my case it's fish catch weight per gridded cell ...
2
votes
3answers
593 views

Creating legend with new data defined symbols functionality in QGIS?

I have a large geology data set that I need to display using an industry standard set of symbols and colours. The symbols and colours are attributes of the data. I have been using the data defined ...
2
votes
2answers
782 views

Automating the production of GPS-compatible map tiles from georeferenced raster maps

I have a set of TIFF maps that I want to load onto Garmin GPS 62s units. The maximum size for each tile on the GPS is 3Mb and less than 1 million pixels. I manually produced one tile, following this ...
2
votes
1answer
2k views

Does QGIS run on Windows Surface with Win RT OS?

I was wondering if anyone has had any success running QGIS on the Windows Surface tablet? Specifically with the Windows RT OS.
2
votes
1answer
111 views

Create points symbology with more than one parameter

In QGIS i would like to create symbology for points layer where the symbology will take into account more than one parameter (currently two). i.e.: My points layer has street names and house numbers ...
2
votes
2answers
282 views

One-to-many join in QGIS

I am looking for a possibility to make a one-to-many table-join in QGIS. I have a shapefile with postal codes and would like to join them with survey results (more than one). In other words, there ...
2
votes
0answers
96 views

QGIS does not display all Features of Layer and behaves weird instead

I have a weird problem with QGIS trying to load a Layer from a Postgis Database When I open the Layer from Postsgis I have two choices: Method one: Either, I use the Panel "Browser", where I can ...
2
votes
1answer
828 views

QGIS ->ArcGIS Server configuration possible?

Is it possible to connect a QGIS Desktop 1.8.0 to an ArcGIS Server 10.0 ? and of course publish services on it?. The configuration would be like this Quantum GIS-> ArcGIS Server 10.0 on Amazon EC2+ ...
2
votes
1answer
257 views

Move label in QGIS?

I cannot figure it out to move Labels in an QGis-Layer. I added two columns (x,y) and set these columns as Data-defined-Position in the layer-properties as descriped in some (older) threads (e.g. How ...
2
votes
1answer
1k views

How to make GRASS and SAGA tools capable to use in QGIS?

I installed QGIS, GRASS and GDAL by OSGeo4w package, and as I finish the installation, I want to use GRASS tool, I face this problem: But I already installed GRASS and SAGA, how to make those tools ...
2
votes
2answers
1k views

How to determine which polygons, if any, points fall within?

I am a amateur at GIS and need some help. I have a group of shapefiles of various areas and an Excel spreadsheet of addresses I have geocoded to points. I want to determine whether each point falls ...
2
votes
0answers
512 views

How to use QGIS Accuracy Assessment plugin? [closed]

I am new user and i want perform accuracy assessment in qgis. I have 1 classified map and another for validation. I have installed the plugin. what am i doing after? Plugin: http://plugins.qgis.org/...
2
votes
2answers
78 views

What method does QGIS Merge Rasters tool use?

I am trying to merge rasters in QGIS and want to set a priority order for merging so that the values from the highest priority raster are used in overlap areas (the “FIRST” merge/mosaic method, I ...
2
votes
3answers
2k views

Qgis Python code library documenation.

I'm looking for python documentation for specific operations in the Qgis python console. I know there is no suggestions simular to Arcpy but I would like a pure list of operation code lines as "layer....
2
votes
2answers
160 views

Generating new shp files according to attribute in QGIS

I know that it is possible to color a vector map by attribute. I separated a map into 4 colors based on an attribute and now I want to generate a new map for each color. Is there a way to do this in ...
2
votes
1answer
428 views

How to fix “Couldn't load plugin …” and “ImportError: No module named …” in QGIS plugins?

After installation of Quantum GIS I tried to use Table Manager Module, but I can't do it. Here is the message: Nem tudom betölteni a 'tablemanager' modult innen: ['C:/PROGRA~1/Quantum GIS Wroclaw/...
2
votes
2answers
328 views

Is there a “Identity (Analysis)” tool for QGIS?

In ArcGIS, there is a tool called "Identity." Say you have a bunch of points. Some points fall in polygons of interest, some don't. Each polygon has a unique ID. This tool will add a field to the ...