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

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12 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
37 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
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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
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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
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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 ...
0
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1answer
41 views

Extract values from raster by using polygons

I am working with multiple raster files that cover all of united states. The file format of the rasters - GeoTIFF. I have around 100 geotiffs that I need to process. Then I have another shapefile with ...
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0answers
19 views

How to make a QT form modal in QGIS

I have created a form in QT (ui) and I have configured the properties of a layer (fields) at edit ui. The form is called from QGIS as non-modal but I need it to be called as Modal. Is there a ...
-2
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0answers
13 views

An error has occured while executing Python code when using r.watershed

Can anyone help me with this error. It occurred when i tried to run r.watershed module.
2
votes
1answer
132 views

Standalone script looping incorrectly?

Following on from my previous question, I would like the script to do the following (includes illustration): Search for the first shapefile (Paris (O).shp) in Country_France > Original files and ...
1
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0answers
21 views

PyQgis: Load qlr files

I have a plugin that loads a Raster image and selects the correct base maps to use. The Raster image load with no problem, but my base maps will not load. I have create a qlr, which has 5 references. ...
1
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1answer
28 views

Viewer not displaying the data in my standalone PyQGIS Application

I tried creating a standalone external application of QGIS using python and I followed the tutorial mentioned in the link ...
1
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0answers
39 views

How to calculate the average point spacing for a layer of points in QGIS?

I have a set of points and want to calculate the average point spacing for further analysis. ArcMap has the 3D Analyst Point File Information for this but I'm searching for an alternative in QGIS. ...
0
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0answers
17 views

Exporting Tiles for mapnik like use

I seek many web on internet, nothing really clear. There is a way to export our project in 256*256 png tiles like OSM. Qtiles is not working as we want (doesn't use layer zoom parameters (what to ...
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0answers
20 views

pyqgis - refreshing only QgsMapCanvasItems not the entire QgsMapCanvas

I have a fairly complex map, consisting of many layers, and despite they're optimized, they still take a certain time to refresh. I also have a QgsMapCanvasItem representing my position, which i would ...
1
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0answers
33 views

QGIS - quickly style categorical map

Example situation: a raster map that denotes various provinces in a country, each indicated with a unique value. Goal/question: quickly (for 'preview' purposes, not making a publishable map) assign ...
1
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1answer
18 views

Extract .osm data appears in axonometric on QGIS

I'm working with QGIS 2.18. 1) I extract .osm data from the site. name : vernon.osm 2) Then i transformed it in a data base file : vernon.osm.db 3) Finally i used spatialite to make it appearing on ...
1
vote
2answers
61 views

Combining spatially identical polylines in the same layer

I have a shapefile of road volumes as polylines, and want to be able to show the sum of the volumes for polylines that are spatially the same/similar but are for travel in opposite directions. For ...
1
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2answers
18 views

Possible to Modify QGIS WFS-T Request?

When trying to edit a wfs-t dataset served through GeoServer (2.5.2) - I edit my data and save, however everytime I get an empty response. Using Fiddler2 I modify the request and the transaction goes ...
1
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1answer
21 views

QGIS - Python errors not reporting to Python Console

Ive been writing a number of small plugins for use in QGIS, and have found that during development having the traceback calls reporting to the python console plugin to be quite useful. I Use QGIS on ...
1
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1answer
38 views

Converting Radian Angle to Degrees

I'm trying to migrate my desktop GIS application from Bentley Map to QGIS. Everything seams to be transitioning great, expect the rotated points. The rotation angle they were saved in Bentley was in ...
1
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0answers
26 views

QGIS MapCanvas with Round Border

I have a canvas within a QWidget (also tried QFrame) which uses a stylesheet: border: 2px solid black; border-radius: 10px; The stylesheet looks great in the designer, but as soon as I put the ...
1
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1answer
21 views

QGIS: RGB Image display results in odd colors (MODIS)

I am trying to make a rgb map of MODIS data (Dataset09 Radiances) with QGIS. First I converted it to tif with gdal (and python). Since I did not really understand all of GDALs funcionality I used a ...
1
vote
1answer
44 views

QGIS Azimuth and Distance plugin length issue

Relative newbie to QGIS and trying to figure out exactly what I'm doing wrong. A couple days ago I had azimuth and distance working perfectly. I was using it in a different project with different ...
1
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0answers
24 views

Parts of geometry disappearing in QGIS export to Illustrator PDF

I'm having this issue with certain polygons when I export to PDF. Everything looks fine in QGIS, everything fine in print composer, everything fine in the PDF as viewed in Preview or Adobe Reader. ...
1
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1answer
45 views

QGIS Spatial Сross Join atrributes

I have a set of LineStrings (streets) And a set of rectangles (atlas pages extents) rectangles could overlap each-other. And now I want to create a legend for atlas like street1, pages: 1,2 ...
1
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1answer
33 views

QGIS Zoom Level with OpenStreetMap Data

how can I increase the zoom level in QGIS for OpenStreetMap (OSM) data? I am new to GIS therefore I may have the terminology wrong. I have added an OSM layer using the OpenLayers plugin. Everything is ...
0
votes
1answer
29 views

pyQGis scale based visibility problem

Im loading some layers from postgis using pyqgis in my standalone qgis app. For each layer i also load a style using: lyr.loadNamedStyle("style.qml") I've setup 2 versions of styles in qgis ...
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0answers
19 views

QGis2.8 ValueMap: Why is the first row of my ComboBox empty?

I define a field of a vector layer as ValueMap. I define the values manually, then the feature attribute dialog appears with the combobox. But the first row in my combobox is empty. I use QGis2.8. In ...
0
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1answer
43 views

Measuring areas in WGS 84 [duplicate]

I started a QGis project with adding information layers from OpenStreetMap such as the streets and railways for a city. This data has WGS 84 CRS. After that, I made a shapefile with urbanized bodies ...
1
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1answer
35 views

QGIS equivalent to MapInfo Sum Attributes for selected vector objects?

I´m looking for QGIS equivalent to the basic MapInfo tool "Sum Attributes". I´ll explain what it does: For selected objects in a vector layer, a popup window shows basic statistics such as: - Sum ...
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0answers
34 views

Does QGIS have a dynamic spatial join select tool, equivalent to MapInfo Boundary Select?

I´m a MapInfo user, I´ve gone over to QGIS and it´s got a lot going for it, except for some simple features from MapInfo I just can´t do without. One such is MapInfo Boundary Select, which is a basic ...
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1answer
19 views

Examples or documentation of the atlasvariables

Are there any examples or a documentation of the atlasexpressions??
1
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1answer
34 views

Coordinates for specific points calculated in QGIS Field Calculator?

I have got a layer in QGIS that is comprised of connected points which define regions of a country, thus the attribute table consists of 38 regions while the number of nodes in this layer is about ...
1
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0answers
32 views

Landsat 7 band 6 VCID 1 (LOW) or VCID 2 (HIGH) for temperature map?

I want create water temperature map with Landsat 7 on QGIS. Band 6 converting to temperature, I read the landsat handbook with formula: T= K2/ (ln((K1/L)-1)). Band 6 has VCID1 "low" and VCID2 "high" - ...
6
votes
4answers
154 views

How to count points within adjoining hex grid cells?

I am currently using QGIS, and have developed a vector grid (hexagonal). I have a separate layer with point data. For each grid cell I need to count the number of points in that cell (but also all ...
0
votes
1answer
13 views

QGIS 2.6 Atlas creator - number of copies of output based on field

I am using QGIS 2.6 to create a series of maps based on a coverage grid. For each grid, I have a field named COUNT, that determines the number of copies I'd like to output. Is there any way to ...
1
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1answer
37 views

PyQGIS: subtracting two values and append ID to list

I would like to subtract two values retrieved from qgs feature iterator objects and append the value of the feature id to a list depending on a condition. I have two layers: roadsLayer pathsLayer ...
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0answers
29 views

Is there something like QGIS` style option “data defined properties” in ArcGIS for Desktop? [duplicate]

Is there an option to do something like this in ArcGIS 10.2.2 for Desktop: http://shreshai.blogspot.co.at/2014/10/display-with-color-symbology-from-data.html I mean especially the part ...
1
vote
3answers
49 views

qgis2leaf exporting transparent polygons as all black

I am creating a qgis2leaf webmap from QGIS 2.8.1. It is comprised of several polygon and point layers. I am able to make my polygon layers semi transparent, but not 100% transparent. I want to be ...
1
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1answer
51 views

Issues with getting the height from SRTM gdalwarp WGS84(EPSG:4326) to Mercator(EPSG:3857)

I am trying to use the SRTM .hgt file to obtain the height of a location. My issue is that I wish to reproject the SRTM file from WGS84 to Mercator but the height returned is not consistent after ...
1
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1answer
26 views

How to change QGIS install paths on Windows?

I will be installing QGIS on client machines soon, and we need to have the .qgis2 folder on the D:\ and not to C. (Windows 7) Is there a way at install time to have it moved to a specific location? ...
0
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0answers
14 views

QGIS web client - Problem with print composer

I have some troubly with the QGIS web client and can't find a solution? I get the following error with firebug when i start the QGIS web client in combination with a printcomposer. TypeError: ...
2
votes
0answers
20 views

Not able to get the PostGIS Layer Viewer running in pgAdmin or command line

I've installed PostGIS Layer Viewer as a plugin for pgAdmin. I've downloaded postgis_viewer.py from the official repository on GitHub! and followed the install instructions described on Web site!. ...
1
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0answers
24 views

QGIS Summarize entries by a column [duplicate]

My big problem is as folows: I have one field named (OBID) identificator of an municipal. Second field is ZAPOSL which indicates the number of employees in several stores in this municipal. I wolud ...
1
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0answers
26 views

ESRI/Mapinfo MGA56 prj vs QGIS MGA56 prj

I am trying to understand why the degree unit is different between ESRI/Mapinfo and QGIS: ESRI/Mapinfo ...
2
votes
1answer
52 views

QGIS Python - raster as point layer, coordinates issues

I would like to create point layer for storing values retrieved from a raster file. My idea was to iterate through all raster cells. If cell value is different than NULL, I wish to create a new point ...
1
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0answers
16 views

QGIS: How to displace points close to each other (but not overlapping) and save as a layer?

I'm preparing a point vector file for printing, and I would like to displace the points within it so that the markers will be far enough apart that they do not overlap. I am not using QGIS to render ...
1
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0answers
18 views

Error adding feature to centroids in QGIS [closed]

I want to map forest stands. I have the compartments as centroids and I am trying to add a feature by snapping to them and creating polygons. Each time I click, however, it displays a box titled ...