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

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32 views

Font styles problem

i have problems with Font Styles in qgis. I have created fonts symbols in my system but when i open the same qml in an other pc the fonts is rong. I try to export my symbols in xml but nothing. please ...
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0answers
98 views

QGIS - Select intersecting features within Value Relation Widget

Does anyone know if it is possible to filter records in the Value Relation Widget to include only those that intersect the current feature? We are trying to set up a layer for user input where we ...
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0answers
124 views

How to apply colour ramp to user-defined range of values for contour lines?

I have contoured elevation data, across a number of shapefiles, at 10m intervals. Each tile has a different range of values (min - max). Under Style > Categorized, I can only apply the colour ramp to ...
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0answers
662 views

How to manually add texts on the map in QGIS?

Is there another way to put river, towns etc names beside labeling in QGIS? Can you manually type text determine size and place it where and as you wish on the map?
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0answers
21 views

QGIS Extract elevation data only for one country [duplicate]

I have a map built with a shapefile for country contours and a raster from .hgt files with elevation representation. How can I only select the area corresponding to the country? I found some thing ...
2
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1answer
210 views

From CSV file (latitude and longitude fields) to point .shp

How i create a new point shapefile from CSV table? If i have a CSV file with a latitude and longitude fields, is there a method for to have in output a puntal shapefile?
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0answers
99 views

Old GDAL/OGR version with QGIS from ubuntugis in 14.10?

Installing QGIS 2.6 from ubuntugis installs an old GDAL/OGR (ogrinfo --version GDAL 1.10.1, released 2013/08/26) - it should be 1.11 for support of the Open FileGDB connector in QGIS 2.6 So I don't ...
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0answers
98 views

Is there a way to create layer summary Pie Charts?

In Qgis2.6. I want to create a pie chart to summarize the layer data. I have a layer of land use polygons (woodland, agricultural, urban etc.). I want a pie chart to show the % of each land use in the ...
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2answers
173 views

Where to find the “contours from points” model in QGIS 2.6?

I can't find the example model "contours from points" in QGIS 2.6. Is there another tool for creating contours from points, besides the QGIS Contour plugin?
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2answers
157 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 ...
3
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3answers
459 views

How can I avoid incomplete wms layers when exporting large maps in qgis 2.6?

I have a QGIS 2.6 project with around 20 vector layers and on wms layer (working on Ubuntu 14.04). WMS rendering works OK, altough a little bit slow, and exporting A4-size maps also works properly ...
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1answer
92 views

QGIS Print Composer producing angled graticule lines that look like rectangles instead of squares?

I just tried to create an extremely simple map made of one layer loaded as WMS layer from Croatia's geoportal (http://geoportal.dgu.hr/wms). I successfully loaded the necessary layer and created ...
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1answer
164 views

QGIS graticule coordinates in print composer starting from 0?

I am not sure how to explain the problem correctly as my English isn't as great as it should be - but let me try anyway. I just tried to create an extremely simple map made of one layer loaded as ...
2
votes
2answers
914 views

How can I transfer waypoints and tracks from Base Camp into QGIS2.6?

I'm working on transferring all my field data from Garmin Base Camp onto QGIS. This is an attempt to overcome the learning curve from basic trail GPS mapping programs to the real thing. I'd like to ...
2
votes
2answers
201 views

Why does clipping polygons result in no features?

I'm using QGIS 2.6. I'm trying to clip the polygons in one layer by another but cannot get the results I expect. I have a layer with wetland areas, and another layer with the boundary of my client's ...
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1answer
281 views

Project from Datum Nad27 to WGS84

This should be simple: have a shapefile in UTM z16 DatumNad27 and want to transform it to Datum WGS84 latlon I am using Qgis 2.6 Sorry I am going to clarify, with the steps taken: 1- XY data of a ...
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1answer
198 views

How to set the Measure Tool Ellipsoid Default Behavior?

Using QGIS 2.6.0 Brighton, I want to overlay a shapefile (EPSG: 26910, Nad83 UTM10) over OpenLayers Google Satellite (EPSG: 3857, Pseudo Mercator), and reliably measure distances. Furthermore, I want ...
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3answers
142 views

How to narrow raster features to single cell width?

Are there any tools or existing workflow which convert raster features (such as roads, rivers, electric lines etc.) which are (or can be) multiple cells wide to a single cell widht (i.e, center line). ...
2
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0answers
98 views

QGIS Problem with extract and warp modules in model builder

I have problems using the gdal modules extract and warp in the model builder. They run correctly when started without the modelbuilder, but when I integrate them in the modelbuilder they won't work. ...
0
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1answer
74 views

Contours with negative values using the model example in QGIS?

I have a data set of water level ranging from -6 m below sea level to +30 meters. But when I use the model example for creating contours from points, the minimum contour value is zero (0). What can be ...
4
votes
1answer
793 views

What's the QGIS Legend Format Syntax to label percentage values?

I asked a question about formatting legend text a while back and I'm happy to see the issue has been solved in QGIS 2.6: How to remove trailing zeros from QGIS Graduated Style Class labels? But I'm ...
3
votes
1answer
373 views

How to calculate the perimeter of the polygon using python programming

Is it possible to calculate the perimeter of each feature of the polygon? For calculating the area we are using: area=feature.geometry().area() is there any function to calculate the ...
4
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2answers
3k views

Misplaced Google Maps with OpenLayers plugin in QGIS?

I was using Google Maps with OpenLayers plugin in QGIS with my vector layer with projection EPSG:4326 with google map projection EPSG:3857 and "on the fly" transformation enabled. It was matching ...
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0answers
147 views

Creating a Raster of Road Distance to Point

I am using QGIS 2.6. This question is in two related parts: I'm trying to create a raster of travel time from one point to another point travelling via the road system. Each raster pixel will roughly ...
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16 views

How to draw coordinates QGIS print composer? [duplicate]

I am trying to add coordinates to a map, I fix all of the settings, but they don't show in the map... Do I need to do any previous work?
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130 views

QGIS raster symbology problem in 2.6

With the new 2.6 QGIS version I often have problems with raster colors. For some reason certain pixels do not display initially, but if I move the raster a little spatially they show up.
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3answers
2k views

QGIS 2.6.0 Minidump crash EVERY TIME I SAVE

Just got QGIS 2.6.0 running on Windows 7 service pack 1 64 bit. Project loads, edits, saves editing changes, adds removes, layers no problem. Only problem is saving the project. Do that and it's ...
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0answers
88 views

Using python to batch process lasclip - LAStools/QGIS

I am trying to use the python console to batch quite a few processes from lastools. I'm having trouble with the arguments to lasclip. clipped_las = processing.runalg('lidartools:lasclip', True, ...
2
votes
1answer
278 views

QGIS 2.6 Brighton: Problem with zoom

I seem to have a problem with the zooming levels in QGIS 2.6 Brighton. When I go to zoom in to a vector or raster layer, e.g. for digitizing purposes, the scale seems to be fixed at 1:2,256, I can't ...
1
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1answer
213 views

How to import multiple shapefiles without any dbf to a postgis database?

I have a polyline shapefile (.shp and .shx) without .dbf. I would like to import the shp into Postgis. In order to do that, I created the corresponding .dbf using the r code provided by mdsumner in ...
2
votes
3answers
399 views

Saving a QGIS project using the API loses mapcanvas (and other) XML nodes

I'm using the following python script to open a QGIS project, modify some things, and save it under a different name: from PyQt4.QtCore import QFileInfo from qgis.core import * def main(): ...
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1answer
317 views

Creating a mosaic with gdalwarp - How to deal with no data and overlap

I want to create a mosaic of satellite imagery in .tiff format. I want to create an actual mosaic, not a vrt, because afterwards I will cut the image in to tiles that make sense for my users. Gdal ...
2
votes
1answer
139 views

Intersection between polylines feature to polygon in QGIS

I would like to transform a line shapefile into polygons. However, the tool Vector>Geometry>Line to Polygon doesn'to work to me. What I would like to do is using the intersection between lines and ...
3
votes
1answer
138 views

How to get the length of each line segment in a line shape file in QGIS

Iam new to QGIS. I drew a line depicting a small length of road. But I drew it in segments and then atlast right clicked at the end point and gave id=1. I extratced the nodes, their geometry. But what ...
2
votes
1answer
328 views

How to add vertex to an existing polyline programatically?

I have a Polyline and would like to add new vertex to before start point or end point or at any part of the polyline using python in qgis. How can i do that?
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0answers
30 views

Avoiding intersections with QGIS Spline plugin (Version 2.0)

Has anyone gotten the QGIS 'avoid intersections' option to work when adding polygons via the Spline plugin? When checking the option and enable topological editing, I continue getting overlaps in my ...
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0answers
72 views

How i can have the same xMin,yMin for vector files in Qgis 2.4

i have a .shp file(polygon) in EPSG:2100 - GGRS87 / Greek Grid and an other .shp(points) in the same system(EPSG:2100 - GGRS87 ) but different xMin,yMin. The first has xMin,yMin 583309.00,4152885.94 ...
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1answer
1k views

How to convert local Coordinates to lat/long Coordinates

I'm using QGIS to do some data analysis and visualization for my newspaper. I received some x,y coordinates from the City of Minneapolis that I can use to build some static graphical maps shaped like ...
4
votes
1answer
382 views

Digitizing contour lines from paper maps using QGIS?

Is it possible to give digitized altitude lines (from paper map) heights using QGIS?
2
votes
1answer
71 views

area elevation distribution with QGIS

I have a raster DEM and a polygon covering a part of it. I need an area-elevation distribution (i.e. how many m2 are in which elevation interval). 20m intervals will be fine. I cant figure it out.
2
votes
1answer
33 views

Percentage of a polygon at, or less than, a specific height (supplied by a raster)

I am using QGIS to process some LIDAR data. I need to be able to define the area of a pond with respect to its depth (i.e it is 100m^2 at 32mAOD and 500m^2 at 33mAOD). Is there a way of finding the ...
2
votes
0answers
67 views

QGIS returns “invalid layer” when adding a WMS layer

I want to add a WMS layer in my map. I select the server and obtain the list of layers that are published there. I select one of them (the problem is the same with all layers), but QGIS does not load ...
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1answer
83 views

How do I make my map use a set of coordinates

Right a little background. I've made a custom google map with the google map api which has a few functions that work well within it - one specifically is limiting the user on what they can view within ...
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0answers
46 views

How to merge DMAs using QGIS — Creating Custom Regions?

What I am trying to do might seem basic, but bear with me as I am just hacking my way through a lot of this space. What i am trying to do: I am trying to create a new .shp file of custom regions. ...
2
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1answer
193 views

QGIS print composer, DMS grid when SRC is not in decimal degrees

I have a QGIS project where the layers are in projected SRC, and when I go to the print composer to draw the grid, the units are in millons of meters, and I want them in decimal degrees. Is it ...
2
votes
1answer
128 views

J2000 to WGS84 in QGIS?

How to transform Earth-Centered Inertial J2000 CRS to WGS84 CRS in QGIS? I searched J2000 in spatialreference.org, however nothing found. I don't know the proj4 string of J2000. Any advice would be ...
2
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0answers
114 views

Menu actions in QGIS 2.6 feature attributes

I would like to ask about new menu 'actions' in feature attributes which appears in new QGIS 2.6. This menu shows 'actions', defined for the layer but I am wondering if it is possible to add some ...
0
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1answer
215 views

Apply an sld to a vector layer in OpenLayers

I'm trying to apply an sld style to a vector layer in Openlayers. I already took a look on google and here and I got a lot of informations, but still I don't manage to achieve the result I'm looking ...
2
votes
1answer
148 views

With QGIS Plugins/PluginBuilder, how to prevent 2nd instance of Plugin from starting

I am using QGIS 2.6.0, with PluginBuilder 2.0.3 [checking the version, I just noticed that the 2.1.0 update is available] I am writing a plugin; it installs and runs. While running, I am able to ...
3
votes
0answers
425 views

QGIS 2.6 Brighton - Graduated Symbols

I can't get graduated symbols to show in QGIS 2.6. This is what I have done. I have two fields of type integer, saved as a shape file which I have tried to import as a shape file and as a secondary ...