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

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3
votes
0answers
71 views

How to make a virtual field function use the same Ellipsoid settings as the normal field calculator?

I have a new shapefile layer in CRS 3857, in a project that has the same CRS. Under project properties, the measure tool is on ellipsoid WGS 84. When i use the field calculator to create a new field ...
2
votes
1answer
116 views

QGIS reprojecting .ecw file in EPSG:23032

I opened the .ecw file with qgis but I found that the ortophoto is 340 mt northern and 150 mt eastern the topographic map. How can I move the ecw?
1
vote
0answers
47 views

Problems coloring features of file geodatabase in QGIS

I managed to open a file geodatabase (.gdb) in QGIS. The extensions of my data are correctly shown and the attribute table shows all values correctly. However, when I double-click on the layer to ...
1
vote
2answers
80 views

QGIS GEarthView plugin ReactorAlreadyInstalledError

I've been battling to get this really handy plugin working for some time. When I try installing it from plugin manager, I get the following error: "This plugin is broken 'module' object has no ...
5
votes
1answer
297 views

Grass NVIZ has no output in QGIS 2.8.1 ubuntu 14.04

I am trying to use the Grass7 NVIZ algorithm from the QGIS 2.8.1 toolbox, on ubuntu 14.04. I have enabled Grass7 in the QGIS processing preferences. I have compiled Grass7 from source, and Grass ...
1
vote
0answers
42 views

Keyboard shortcut for “delete” object in print composition?

Is it possible to have/add a shortcut from the keyboard to "delete" an object in print composition? I use to add objects from models then I have to print and delete them to add obects from another ...
4
votes
2answers
112 views

How to preserve formulas in XLS cells when working in QGIS?

Opening layers directly from XLS spreadsheets is a very useful (if not well documented) feature of QGIS, but I can't seem to be able to properly import cells where the contents of the cell is the ...
1
vote
1answer
293 views

How to replace characters to eliminate encoding errors?

Working with Qgis, I have a table representing streets. Attributes inlude street name, length, pavement and some others. Unfortunately, all names with ä or ö or ü display 'odd characters' like Ã1/4. ...
1
vote
2answers
74 views

Selecting/Exporting points from one layer that do not overlap with the points from another layer in Qgis

I am working with QGIS and have the following problem to solve: I have 2 point layers. Layer 1 has more points than Layer 2 but all points of Layer 2 have the same position as Layer 1. I need to find ...
0
votes
1answer
78 views

What packages are required to install C++ API on Linux Mint 17?

What packages are required to install C++ API on Linux Mint 17? I already have access to the Python API (installed via “python-qgis” package), but no C++.
3
votes
1answer
264 views

Local Ortho projection to Proj4

We are trying to use proj4 to project a local coordinate system to EPSG4326. We believe we have most of the string created correctly in QGIS and as follows; +proj=ortho +datum=WGS84 ...
2
votes
0answers
72 views

Displaying symbology outside map canvas window extent?

Say we have equally distributed x,y mesh vector file. Each coordinate has a map-unit based diameter circle symbology. If we zoom into a region of the map canvas far enough, some centroids exist ...
1
vote
2answers
734 views

How to properly get the slope from an ASTER DEM in QGIS?

I have inserter a raster dem layer from ASTER satellite and I want to get a raster that has the slope of the area. I use terrain analysis > slope but the output is so wrong. Why is that? here is the ...
1
vote
1answer
227 views

QGIS clipper problem when mask used

I have encountered a problem with the raster>extraction>clipper function in QGIS when a mask layer is used. In the image below the diagram on the left shows part of the original raster. The diagram ...
1
vote
1answer
137 views

QGIS Add PostGIS layer: restricting to single schema?

My primary PostGIS database has 12 schemas (schemae? TNIRN...), some of which have nasty-sized tables. The DB is on localhost, on my own machine. For the most part, the actual working tables are in ...
0
votes
1answer
153 views

QGIS: Delete information from rasters and shapes that are out of country borders [duplicate]

I am trying to make topographic maps for some countries and show only those countries. I already created reliefs from SRTM-data and imported lake and river data from Natural Earth. Now I want to ...
6
votes
2answers
733 views

QGIS area calculation differs when on the fly CRS transformation enabled

When I open QGIS, add the layer, and calculate the areas of the shapefile via field calculator I get a different area than when I open QGIS and check "Enable on the fly CRS transformation" and ...
0
votes
1answer
126 views

Arcmap 10 Visual Basic

im wondering if there is a way to build something like this in Arcmap 10 since VBA isnt supported anymore. Its for my Thesis. I need a tool to handle Polygons and their Information like in the ...
0
votes
1answer
36 views

How to take only relevant rows from database, based on common codes

I have a shp file that is missing some data, e.g. attributes. I have the missing data in a csv file. How can I get ONLY the relevant rows from the csv file added to the current shp file's data table? ...
3
votes
2answers
1k views

Tablets with QGIS data collection in the field + image capture?

Situation: – In a student project, we are building a cataster/registry of pollard trees. – We have geolocations of many trees and now we want to collect data about these trees in the field. – We want ...
1
vote
3answers
44 views

How to find which areas/regions a list of lat/lons are in?

The Australian Bureau of Statistics (ABS) issues Esri shapefiles or MapInfo files which have a code # for each geographical area at various 'resolutions' and I have a database with a column of ...
1
vote
1answer
63 views

How to turn a shapefile into a table?

How do you completely turn a shapefile (created with QGIS, including .shx and the other 4-5 files) into one tabular dataset. I am actually doing this when I import the shapefile into Postgresql ...
1
vote
2answers
138 views

Buffer View With SpatiaLite and QGIS

Creating a dynamic buffer with PostGIS the following view is working: CREATE VIEW buffer500m AS SELECT gid, st_buffer(geom,500)::geometry(polygon,31492) AS geom FROM point; Unfortunately this query ...
1
vote
1answer
4k views

Open Layers Plugin not working in QGIS 2.8.1 [duplicate]

I am using QGIS 2.8.1. I have installed the Open Layers Plug, however it is not showing up in my list of plugins. I confirmed it's installed in the plugin manager. Is anyone else having this issue?
1
vote
1answer
1k views

How to fill the column in attribute table with same values?

I have about 19000 records, I added new column and I would like to fill it with string values (eg. brand)- same value for all rows. I'm not considering copy/paste. I know I could do it with exporting ...
3
votes
1answer
37 views

Is it possible to hide icons in the QGIS print composer?

Is it possible to hide icons in the QGIS print composer? I have used the Customization page in QGIS to create an ini file to simplify the QGIS interface for my users, but I can't see how to do the ...
2
votes
2answers
311 views

QGIS error when importing .asc LIDAR data

First let me say that I am novice in GIS department. As archaeologist I had only some courses 8 years back when i was still studying. Now, the problem: When I try to import .asc as raster layer I ...
1
vote
0answers
159 views

PostGIS Geography data type not displaying in QGIS

I am trying to display data held in the PostGIS Geography type on a map in QGIS. Whatever I do I can't get it to work. Here is the SQL that creates my data - a single point in London. CREATE TABLE ...
1
vote
1answer
469 views

How can I geocode CSV by postcode, using existing point data, in QGIS?

I have a very simple MapInfo workflow for geocoding a CSV file which contains UK postcodes, based on an SQL select query referring to point data for postcodes. This is simple. Using Mapinfo open the ...
1
vote
0answers
112 views

Put output of SAGA algorithm of Processing model in R script

I'm trying to combine the Variogram Cloud model of SAGA with an R script inside a Processing model. First, the R script is: ##Vector processing=group ##showplots ##Layer=table ##X=Field Layer ...
1
vote
1answer
55 views

Symbolize points in the same shapefile differently

I was wondering if there is a way to edit the appearance of the points in the same shapefile. I have a shapefile with fifty points in which dead wild animals were found but 5 of them were positive to ...
1
vote
0answers
38 views

QGIS : exported PDF resulting in misaligned Bing Aerial and vector layer [duplicate]

I'm working with QGIS 2.8.1. I have a project with CRS: 3947 (Central-Western France) and several layers in the same CRS. I have not activated the 'On the fly' CRS transformation. I add the Bing ...
2
votes
1answer
159 views

Points in Polygon results in PNTCNT=NULL

I am trying to use the QGIS (2.6.1) vector analysis tool "Points in Polygon". The points originally came from a KML file and the polygons I created new. I initially had a warning about different CRS ...
0
votes
0answers
62 views

QGIS Import Interlis Points problem

When i'm importing a Interlis 1 file (*.itf and *.ili) to QGIS 2.8.1 (or 2.6.1) the polygones are visualized correctly but all the tables containing POINTS (LFP1, Grenzpunkt,...) couldn't be ...
0
votes
0answers
32 views

QGIS vector data, graduated symbology (choropleth), discrete class bound values [duplicate]

This doesn't seem to bother anyone else, so maybe it's just me. I'm using QGIS to create a choropleth map of historic property boundaries. Since settlement occurred in pulses, I'd like to use Jenks' ...
1
vote
1answer
831 views

QGIS - split polyline

I need to create a shapefile with crossed streets. I can't split the lines to number each segment with the house number ranges.
1
vote
1answer
408 views

How to upload GeoJSON to CartoDB in a CRS that is not lat/lon?

I'm pretty sure I need to convert the coordinates in my GeoJson file to EPSG:3857 for them to play nicely with CartoDB, but I don't know what coordinate system they are currently in. The original data ...
2
votes
1answer
476 views

How can QGIS Field Calculator sum values from a spatially joined table?

Can the Field Calculater be used to sum values from a related table via a Spatial Join? I have two vector polygon layers A and B, each with a numerical column VALUES. I want to update VALUES in ...
2
votes
1answer
163 views

How do I read and modify heat map value classification on QGIS?

I am trying to create a heat map on human encroachment using the heatmap plugin of QGIS 2.2. I have no problems creating a good looking raster file using a 2 km radius but I can't find my way around ...
1
vote
1answer
123 views

In QGIS what data file formats (etc) can be directly edited and which only viewed?

QGIS allows for opening very many different file formats (SHP,TAB,CSV,Spatialite,...) Some of these are directly editable (SHP, Spatialite, ??) Some of these are only viewable (TAB, CSV, ??) I'd ...
1
vote
0answers
82 views

qgis 2.8.1 arcgis filegdb incomplete list in win-version

i am running qgis 2.8.1 (OSGeo4W 64bit-version) on mac (10.10.3) and win (7) ... and was just recently confronted with different behavior of both versions when trying to open (ESRIs) file.gdb. the ...
0
votes
0answers
219 views

Get min/max value of each band from landsat image?

I am trying to get min/max value of each band from Landsat image with the following code. from osgeo import gdal raster = "raster.tif" # load raster gdalData = gdal.Open(raster) # get number of ...
2
votes
1answer
229 views

Create a PLSS quarter-quarter grid using QGIS

Is there a way to create quarter-quarter sections (of the PLSS township/range/section grid) using QGIS? I've already found http://ianbroad.com/creating-quarter-quarter-section-grid-python/ but using ...
0
votes
1answer
230 views

Problem with attribute field in rasterizing tool QGIS

I am trying to rasterize a vector layer using the "rasterize tool" in QGIS... The problem is that there is no "attribute fields" available to choose from (even though they exist!)...
2
votes
0answers
55 views

Where to find QGIS geoprocessing results?

Is there a way to access in QGIS 2.6.1 something like the Geoprocessing Results window found in ArcGIS? The History and Log window in QGIS appears to show the geoprocessing results from SAGA, OTB ...
0
votes
1answer
219 views

Automatically split KML into point, line and polygon SHPs?

I have a lot of KMLs that include points, lines and polygons together, is there a way to automatically parse them into separate shapefiles (one for point, one for line, one for polygon) in QGIS or ...
2
votes
1answer
146 views

Tool Bar visibility in PyQGIS

I am creating a plugin for Qgis 2.6 and when my plugin loads up i want to disable the visibility of some of the tool bar. I was able to set the visibility for various tool bars like ...
0
votes
2answers
116 views

QGIS (2.8) Generate a series of map for each field of the attribute table?

I have a shapefile with more than 30 columns (or fields) in the attribute table. I would like to automate the creation of one map for each of them. I gathered that the QGIS Atlas generator can do ...
1
vote
0answers
46 views

QGIS - r.* commands not found

I'm very new to GIS and have recently installed QGIS on my mac desktop computer, running Yosemite 10.10. I'm working with DEM data for stream network extraction, but the majority of grass raster ...
1
vote
1answer
258 views

How to call QGIS modules (qgis.core) from python idle as I can call arcpy

I was trying to set up path to be able to call qgis modules as it defined in their website Introduction and set PYTHONPATH=c:\qgispath\python . I also try to follow suggestion in link below How to ...