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

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7 views

Exporting from qgis to grass

I'm new with qgis and grass so I'm sorry if there is a straightforward answer for this question but I can't seem to get it done. I've imported a pointcloud into qgis from a datafile. Now i'd like to ...
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14 views

QGIS Server 2.8 on Windows Server 2012

I'm attempting to install QGIS Server 2.8 on Windows Server 2012 R2. I've followed the instructions here and here. I've moved all the dlls from OSGeo4W to SysWOW64 for completeness' sake. I'm still ...
0
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0answers
42 views

Business plan for GIS Company? [on hold]

I want to do a business plan for my GIS company. We are in the begining of our company and we want to do a business plan. I don't have any economic education. I have only education on Geo-Informatics. ...
2
votes
1answer
24 views

Display the size of the dot based on the value [duplicate]

I import a CSV File and for each coordinate, I get a point in the map. Can I set a column for the value. Then the size should based on the value have a special size. Or based on all values, it should ...
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0answers
23 views

error in selecting data from attrribute table QGIS

First of all, im not sure why all the data points from my csv file does not show up on qgis. I enabled custom delimiters to commas and still have no clue. it worked for my other vector layers except ...
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0answers
20 views

How to reload a raster file from the python shell

I do this in the QGIS python shell: # get the raster file (and data) of the active layer canvas = qgis.utils.iface.mapCanvas() rLayer = canvas.currentLayer() rLayerPath = ...
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0answers
19 views

Can I display customer addresses based on their address?

I have a CSV file with a lot of addresses of customers. Can I import this and it display a point on the address and all other information from the CSV for this entry? I want to display later in wich ...
1
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0answers
8 views

QGIS Molusce problem

I have a problem in QGIS Molusce plugin. I opened two raster files represeting LULC of 2 years, and roads as a spatial variable. The result of geometry check was positive. On Area changes tab clicking ...
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0answers
19 views

TIN Interpolation in QGIS creates weird lines?

I am using TIN Interpolation to interpolate point features based on their cost attribute (value is between 0 and 5000). Graduated symbology creates something like this: However when I am using TIN ...
2
votes
1answer
32 views

How to change the edit widget for fields in a layer with PyQGIS?

Is possible change the edit widget with PyQGIS? I have made an extension that loads a PostGIS layer and I want to edit the date fields with the date widget by default without any change in the ...
0
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1answer
14 views

GRASS 7.0.0beta3 / statistics change after TIF import?

I'm new to this forum, and pretty much a beginner with GRASS (7.0.0beta3 installed atm). So my question is the following: Statistics (mean, min, max) change quite a lot after importing a .TIF grid ...
-2
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0answers
11 views

pgrouting in qgis for finding path from source to target

I have installed QGIS and for my project i need to give the shortest path to user from source to destination and following this tutorial http://workshop.pgrouting.org/chapters/shortest_path.html In ...
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0answers
18 views

QGIS, Android and bug on invalid qt version [on hold]

It´s already reported, (http://hub.qgis.org/issues/11711) but there seems to be an on-going proces on this issue. I really need QGIS running on my Android (Nexus 10) and so do other users. Can ...
1
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1answer
19 views

QGIS get the X and Y of a raster file by click

I have a raster file (Geotiff) and try to write a plugin that can change the value of one cell in a raster (== array cell). I know how to get a QGIS point but how can I get the array index from on ...
1
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2answers
27 views

non alignment of base layer and other vector layers

i'm sure you've encountered this problem repeatedly. i've tried all different methods. Enable on the fly crs transformation. go to settings and options to use crs data. go to properties and change ...
2
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1answer
66 views

Best practice for a group working on the same shapefile, with open source tools

We are a small (~5) group working on a single, shared shapefile. The current workflow is that each one of us does the editing on a designated attribute field, on his local copy, then exports the ...
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0answers
13 views

Older QGIS 2.4 version installation in Ubuntu 14.04 instead of QGIS 2.8 [duplicate]

Right now I am trying to run SWMM model on QGIS2.8. But the swim plugin is not compatible with 2.8 version of QGIS. Can anyone suggest me how to download and install qgis 2.4 on Ubuntu 14.04. It ...
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0answers
9 views

Unable to obtain linear distance matrix

I am using QGIS 2.6 (Brighton) and when doing a distance matrix, the output csv file appears blank. Is it possible that somehow the shapefile I am using is corrupted?Has anyone please got any hints or ...
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0answers
22 views

Installation procedure for older version of QGIS (2.4) on Ubuntu 14.04 [on hold]

How do I install an older version of QGIS, specifically 2.4, on Ubuntu 14.04?
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2answers
27 views

WMS not loading in QGIS 2.6.1 Brighton

I'm using QGIS 2.6.1 Brighton, trying to load the following WMS layer: http://services.nconemap.com/arcgis/services/Imagery/Orthoimagery_Latest/ImageServer/WMSServer I can successfully load the WMS ...
2
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0answers
19 views

Changing the background color of the Georeferencer in QGIS

Is there a way to change the background color of the Georeferencer in QGIS? What I mean is, can I somewhere change the color that does not belong to the image that is about to be georeferenced? Let’s ...
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0answers
11 views

Multiple raster layers of same area need georef.

I have many raster layers that I need to georef to my existing vector layers. Some are 8 unsigned, 32 float and 64 float. Is there a way to georef all the layers at once so they all have the same ...
1
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1answer
15 views

Label moved with Move Label Tool disappear on QGIS v2.6.1

I have done a deep research on previous post about "move label tool", but I have not found the correct answer for my case. I have the version 2.6.1 of QGIS. When I select a particular point of my ...
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0answers
31 views

Projection transformation into WGS 84

How to perform transformation from EPSG 4012 to WGS 84 in QGIS? I have tried to convert from EPSG 4012 (Unknown datum based upon the Clarke 1880 (RGS) ellipsoid) into WGS 84 in QGIS with no ...
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2answers
29 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 ...
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17 views

Tools for building and exporting high resolution geotiff

I'm having some really nice raster maps in geotiff format. I would like to add some features to these maps as well as then exporting them as tiles for serving the map from a web server. Preferably I ...
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0answers
9 views

QGIS Import WKB csv file

I have a csv with a unique field that are the coordinates of thousands of points but in WKB format. How can I import all the features into QGIS? CSV file is like this: ...
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0answers
16 views

How to batch “Layer save as”-process in QGIS?

I want to save many (about 100) QGIS-layers at once. Is there an automatic way to batch the "save as"-process?
1
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1answer
19 views

'Add image' doesn't provide north arrow directory in QGIS Brighton

I'm still using QGIS Brighton to finish a map in Composer and would like to add a north arrow to it. In previous versions I added the arrow as an image, but when I click on 'add image' and click on ...
1
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0answers
11 views

QGIS Project: where to put CORE_Export definition in Visual studio 2010

I am trying to develop a QGIS application with the following setup: OSGE4W qgis Libs QT 4.8.5 Windows 7 Visual Studio 2010 I have all the references setup in VS, but am not sure where define the ...
0
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1answer
11 views

QGIS extend raster layers extension

I want to extend a raster layer to another layer's extension (my input raster layer is smaller). The new raster cells should have 0 value. Is this possible in QGIS?
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0answers
18 views

QGIS Print Composer grid - curved latitude lines

QGIS 2.8.1 I am preparing a map of the North Atlantic and Arctic Regions in EPSG:3996 IBCAO North Polar Stereographic to display the geometries closer to their shape and size. In Print Composer, I ...
1
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1answer
15 views

Raster layer - changing values in raster cells

I have a lot of cells in a raster layer (GeoTIFF) with a -9999 value in it. I would like to update that values to 0. I mean, in vectorial layers would be something like: CASE WHEN band1=-9999 THEN 0 ...
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0answers
15 views

QGIS Rasters - Filling no data cells [duplicate]

When making a sum between two raster layers, for every cell, if one of the two cells have no data in that cell, the opeartion is not done in that cell, example: In QGIS raster calculator I do: ...
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0answers
14 views

QGIS Raster Calculator, joining two raster

In QGIS raster calculator I do: Plus (+) And I get: The red circle in the middle is like cut in the result, QGIS it's not adding every pixel on each raster, it makes a kind of ...
1
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1answer
20 views

Error in executing commands in GRASS GIS

I'm using Grass 6.4.3RC2. I have a problem because when I execute the command: r.radcov csv_file=cell_list_hataDEM_umts_amc_testTEST.csv dem_map-AlbSRTMdem@PERMANENT clutter_map=AlbClut@PERMANENT ...
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0answers
38 views

QGIS 2.8.1 print composer wont export all OpenCycleMap base layer tiles

My set-up is Linux Mint 17.1, 32- bit system, QGIS 2.8.1-Wien. I have a map with 5 layers. In Print Composer the extent of the map is 32.5km x 22km square and the print page size is A1. I am ...
3
votes
3answers
46 views

QGIS won't read table columns in CSV import on Mac OS

I am trying to import a CSV file to QGIS, but it ends up looking like my print screen below (program is in Swedish but in the preview window you can how QGIS won't read my data correctly). I can't ...
0
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0answers
14 views

How to get a time cost related to polyline geometric characteristics in postgis using OSM data?

I'm trying to make an isochrone mapping of the emergency facilities in my region, I'm using a street map loaded in postgis by osm2pgrouting, data is supplied by OSM. The only cost I got for every ...
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0answers
24 views

Creating custom map in QGIS?

I want to create an interactive map in qgis using this image but i cant understand the tutorials on youtube. I learned that it is georeferencing but the y already have shapefiles when using ...
0
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1answer
25 views

How to change the QGIS edit cursor and node icons?

Two things I really dislike at QGIS, are the "fat" node icons (when editing lines) and the cursor which cover the object below and make it impossible to accurately move a node. Is it possible to ...
1
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1answer
35 views

Getting only points when importing from OSM to Postgresql

This is my very first time working with OpenStreetMap data so feel free to tell me if I am forgetting important information. I am trying to import some data from OpenStreetMap into PostGreSQL. I ...
1
vote
1answer
24 views

Clipping a raster layer with a shapefile on mac

I am trying to clip a raster layer using the raster clipper function. However, for some reason this is not working for me and I haven't been able to find the answer anywhere. I choose my raster ...
1
vote
1answer
31 views

QGIS Modeler flexibility and errors?

I'm trying to build a simple multi-step selection (by attribute) with the QGIS Modeler. I created a simple sample layer to avoid data-driven errors. Now I want to query the layer and select features ...
1
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1answer
24 views

Use raster memory layer from QGIS processing result

I want to apply subsequent QGIS raster processing algorithms in a python script. I want to use memory layers for intermediate calculation results since I am only interested in the end result. As ...
1
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1answer
40 views

Why is my map zoomed in so ragged compared to what I actually drawed in QGIS

So overall my map looks the same like what I draw in QGIS. The issue is that when I zoom in, in that case 54x then you can see ragged lines. QGIS Browser That is not what I need. I need high ...
0
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1answer
9 views

QGIS web client installation: this.projectSettings.capability is undefined

I am trying to debug my configuration of QGIS web client. I have the same problem illustrated here (the GIS-Browser appears but it keeps loading map for the two sample projects ). Yet following the ...
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0answers
20 views

Converting Elevation Raster to Contours [on hold]

I am trying to convert multiple elevation raster files into contour lines, but the contour shapefiles all just end up on top of each other on my map. I can't get them to be where they're suppose to ...
2
votes
1answer
16 views

Odd behavior in a QGIS plugin: my function is triggered twice

I have a plugin with a function (triggered by a button) that selects a specific layer by name, then shows its attribute table. When I close the plugin and open it again, the attribute table pops up ...
0
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0answers
24 views

QGIS expression: select from <layer> possible?

I have a project file with many nested layers and would like to query certain layers without having to click on them first. The expression tool however requires me to select the layer I want to query. ...