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

learn more… | top users | synonyms (1)

0
votes
1answer
8 views

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

I have a current .shp file that is missing some data and the data i have in a different database, a .csv file. How can i get ONLY the relevant rows from the .csv file added to the current .shp file's ...
0
votes
1answer
12 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 ...
0
votes
3answers
11 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 ...
0
votes
0answers
14 views

Raster Points to Shapefile

So! I would like to be able to do this in QGIS, but if ArcMap would be better, feel free to say so. I have raster data for % Ice coverage of the Great Lakes. Each point has its assigned percent ...
1
vote
0answers
18 views

Topology in Arcgis and QGIS

I have been studying topological methods like 4 intersection , 9 intersection, dimension extended and CBM (calculus based methods) like RCC-8. I want to know which of this method is used for ...
0
votes
1answer
36 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 ...
-2
votes
0answers
31 views

Make a polyline turn smoother

Let's say that I have a polyline (kml/GeoJSON/shapefile/whatever) which looks like this (just an example) I am looking for a way to automatically transform the polyline so that it turns smoother. I ...
1
vote
1answer
20 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
15 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
36 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
19 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 ...
0
votes
0answers
8 views

Cannot connect MSSQL server from QGIS

I'm trying to connect to an MS SQL 2012 database from QGIS 2.8 on Windows and get this error: [Microsoft][ODBC SQL Server Driver][SQL Server]Cannot open database "xxx" requested by the login. The ...
1
vote
2answers
21 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
20 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
36 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
36 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
29 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
1answer
17 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 ...
0
votes
0answers
21 views

Why won't my Mac load MrSID files?

We are trying to view MrSID files using Mac QGIS Wein and we have installed the KyngChaos versions with all the GDAL updates, ECW, MrSID plugins and Newest NumPY. What are we missing? Mac OS 10.8.5 ...
1
vote
0answers
15 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
10 views

QGIS Import Interlis name of attributs

Why if i import Interlis 1 files to QGIS 2.8.1 / 2.6.1 there is no identification of the attributs names in each tables? The interlis model is correct (I've also tested an ITF-file with the federal ...
0
votes
0answers
8 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
27 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
38 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
40 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
34 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 ...
1
vote
1answer
31 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
0answers
16 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 ...
0
votes
0answers
8 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
25 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 ...
1
vote
1answer
24 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
0answers
14 views

Mapyx Quo inaccuracy

I am in the middle of switching from Mapyx Quo to QGIS and have come across a problem. The co-ordinates of points shown both on aerial photos and maps differ by about 10m between Quo and QGIS. I ...
0
votes
1answer
24 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!)...
1
vote
0answers
21 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
25 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
35 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
1answer
26 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 ...
0
votes
0answers
14 views

Command Grass in QGIS not work

When I use r.contour or other Grass commands in QGis, I have this error message. Why?
1
vote
0answers
13 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 ...
0
votes
0answers
17 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 ...
1
vote
0answers
21 views

How to disable right-click that brings back the last tool in QGIS?

In QGIS, if one clicked on the "Measure Line" tool, did some measuring, then clicked on the "Pan map" tool and then right-clicked on the map canvas, the last tool/function pops up, which is in this ...
1
vote
1answer
16 views

Change Projection

I am a little bit lost here. working in QGis 2.8, OS X 10.10. I have a polygon shp in the CRS EPSG: 21781, CH1903 / LV03 and a point file in EPSG: 4326, WGS84 How would I work with these ...
1
vote
1answer
18 views

QGIS 2.6 Diagram Overlay plugin

I'm not able to find the "Diagram Overlay" plugin in QGIS 2.6 (OS X) from the Manage plugin list. Could anyone help me to download it?
0
votes
0answers
11 views

qgis 2.8 - composer: lock layer styles into the legend?

Using qgis 2.8 there is now the opportunity to lock layer styles for map items. Is there a way to lock the same layer style into the legend that correspondent with the same map item? I tried both, ...
2
votes
1answer
34 views

Two different colours in label

Is it possible to have label in QGis 2.8 two different colours? For example Field1 in red colour and Field2 in blue (Field1 || ‘ ’ || Field2).
1
vote
1answer
36 views

Rewriting csv file for QGIS

So, I have a .csv file. Here an example how the a row from the original .csv looks like: "AREA",44.37,-00.83,"5","1","8","E","E",,,"KKI","KKO" Some lines have missing latitudes and longitudes, ...
1
vote
1answer
33 views

How to make a Standalone QGIS application run as an exe file

I had made a simple standalone application and that works fine. But the user have to execute a batch file(inside in which I had set the QGISHOME path, Python path and call my main python file) to run ...
1
vote
1answer
15 views

How to make the toolbar icon visible in the target machine without changing the path

I had done a simple standalone application that loads a shape file and does some basic actions like zoom in, zoom out, pan etc in the viewer. In my python file, I had set the icon path for all these ...
1
vote
0answers
25 views

QGIS Plugin Import Error on QGIS start

I have been getting a bit of an odd error when starting QGIS concerning the loading of one of my own plugins Traceback (most recent call last): File "G:/OSGEO4~1/apps/qgis/./python\qgis\utils.py", ...
1
vote
0answers
26 views

How to add graduated color to a line based on data?

Rookie here. I have a line that I would like to color based on some data points that I have along its path. I'm not sure the best way to go about this. Should I try to break the line up into many ...