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

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172 views

makefile generated using QGIS Plugin builder cannot find pyuic4

I have QGIS 2.4 installed using the OSGeo4W installer. I have the bin folder in my path and I can run pyuic4 successfully on the command line using osgeo4w.bat, but when I try to run the makefile ...
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1answer
396 views

Replacing PyQt4 with PySide with standalone QGIS

I would like to develop an application using the QGIS libraries and PySide instead of PyQt4 due to more flexible licencing, I wonder if this is possible. I downloaded PySide and replaced my ...
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1answer
532 views

How to install QGIS 2.2 instead of 2.4 to get a working OpenLayers plugin again?

I use ubuntu . I don't know how to return installed qgis 2.2 I try uninstall qgis 2.4 and try find how to install old version qgis 2.2 Please .. tell me how to install old version qgis 2.2 for ubunut ...
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28 views

QGIS --> ArcGIS server by WMS? [duplicate]

I have found this post: Quantum GIS ->ArcGIS Server configuration possible? My question is more specific >> Can I publish feature layers to ArcGIS server from QGIS using WMS?
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1answer
676 views

How to install PostGIS Manager and RT Sql Layer plugins in QGIS 2.4?

This might be a rather simple question, but both plugins are not visible in my QGIS menu. I'm running 2.4 on Ubuntu 14.04. Thanks for every piece of advice.
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1answer
310 views

How to interact with other layers in a QGis Python init function?

I am using QGis and making a Python script that sets the Python Init function to a custom UI file. I have a function with the following signature: def formOpen(dialog, layer, feature): ... I ...
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0answers
97 views

QGIS view bounding box on Add vector layer GeoGSON protocol?

Our server can serve GeoJSON with an optional bounding box HTTP parameter. e.g. http://our_gis_server.org.au/layername?bbox=xmin,ymin,xmax,ymax In QGIS I can add this vector layer as a Protocol and ...
5
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2answers
2k views

Is it possible to rotate the *canvas* in QGIS

Can the canvas be rotated so north is pointing in some other direction than defined by the projection? This question answers with respect to the composer, but not the canvas. There is a related 5 year ...
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2answers
1k views

How to determine which polygons, if any, points fall within?

I am a amateur at GIS and need some help. I have a group of shapefiles of various areas and an Excel spreadsheet of addresses I have geocoded to points. I want to determine whether each point falls ...
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0answers
271 views

pyQGIS (Spatial Join): Sum features of attribute from point layer and join with vector layer

I am new to Python and QGIS. I have avoided asking questions up to now. But by now I have developed a reasonable idea of where i want to go so and where I am stuck. So, I have decided to ask but sorry ...
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1answer
244 views

What is the typical v.surf.xxx exicution time?

What is the typical v.surf.xxx exicution time? I am trying to run v.surf.bspline on a set of ~1600 points. It has bee running for about an hour now and is stuck at spot indicated in the image. I ...
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2answers
464 views

Display two-dimensional color gradient for two different quantities

I have two overlapping raster layers. One contains quantity A from 0 to 100, and the other contains quantity B from 0 to 100. I'd like to create a map displaying both sets of data at once based on a ...
3
votes
1answer
679 views

Shortest distance from polygon centroids to a line in QGIS

To get the distance of each polygon centroid from a line, I have tried the Distance to nearest hub algorithm from the Processing Toolbox. The distances I got from the algorithm did not seem correct, ...
3
votes
2answers
422 views

Draw Vertical Line QGIS Composer

Is there a way to draw a perfectly vertical line in QGIS's Composer. I wanted to created a visual separator between two elements for aesthetic reasons. I've tried the arrow tool, removing the arrow ...
2
votes
1answer
1k views

Merge two geojson files

I have a global json files about countries' boundaries but the Russia is in two parts (two polygons). I want to merge the two parts in one, without the boundary at the middle. Is there a way to "...
3
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1answer
697 views

NVIS module not found in QGis

When I try to use the nvis module in Grass, QGis, pops-up a warning window saying "Module nviz not found". how can I solve this issue and use the nviz?
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1answer
110 views

Count points in a polygon that changes form (“on the fly calculation”)

I have tried to find a plugin for this, with no luck. Perhaps someone knows of a plugin that can do the following: In this project I create a lot of polygons that contain points, and the size of the ...
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1answer
95 views

Zoom to Postcode QGIS Plugin - “Postcode not Found”

I'm trying to get the Zoom to Postcode plugin for QGIS to work on my machine (Mavericks, QGIS 2.2.0) The plugin downloads fine, and when I first try to search for a postcode it alerts me that it ...
0
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1answer
81 views

QGIS processing does not support jpg

I would like to work with the gdal functions provided in the processing toolbox. It is easy to call: import processing processing.alglist() processing.runalg("gdalogr:warpreproject","/home/USER/....
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0answers
119 views

GIS grid linear interpolation for a given point

Suppose that I have a GIS grid. I need to do linear interpolation for a given point located inside a cell of the GIS grid. The locations and values of the vertices of each cell in the grid are known....
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1answer
150 views

How to modify existing grass gis tools and run them in QGIS?

I would like to take an existing tool of the grass tool box and modify the code to the specific needs of my task. As I´m struggling to start some kick-off would be great. How to access code? What do I ...
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1answer
22 views

Can I upload an LPA file (Long Profile) to QGIS

I have a .lpa file that I'd like to upload to QGIS - Can this be done and if so, how? Thanks!
2
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1answer
111 views

Creating a line from lots of easting/northing co-ordinates

I have hundreds of easting northing points which I need to join as a single line to show a route. How do I import them and get QGIS to automatically turn them into a line?
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1answer
181 views

Width and distance when using line patterns in QGIS

I am trying to make a cross hatch polygon fill (example link attached) using the values (defined by law) of 0.1mm for line width and 0.8mm for distance between the lines. But I don't get/see any hatch ...
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1answer
509 views

sub-dividing KML files

I do have a kmz file which marks the boundaries of a larger district and it's sub-districts. Still new to GIS and in the process of getting familiar with QGIS, I wonder can anyone advise me how can I "...
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1answer
546 views

DXF (points and lines) in QGIS - Doesnt import z coordinates

Trying to get to grips with QGIS, coming from a Mapinfo and Civil3D background. I have a DXF file with points (X,Y,Z) and lines. I want to open this in QGIS and use the interpolate plugin to create ...
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0answers
122 views

Can I create a cross section from points along a line without using a DEM in QGIS?

I have a set of points perpendicular to a river and would like to present a cross section of them. Like a simple graph in Excell for example, with Z as y axis and distance along the line as the x axis....
4
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1answer
1k views

QgsMapRenderer to export current extent using PyQGIS

I am trying to accomplish PyQGIS simple map rendering via the QGIS 2.0 Python console, but end up with only a blank image. I've followed instructions of this link. My objective is to export a simple ...
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0answers
98 views

gdal_translate from within pyqgis [duplicate]

I want to use gdal_translate from within a python script in my plugin qgis2leaf. I've tried with subprocess.check_call(['gdal_translate','-of','jpeg','-outsize','100%','100%','-a_srs','EPSG:4326',...
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1answer
94 views

QGIS: Turning Filter On and Off

When a filter is applied to a layer the layer cannot be edited. Is there any way of quickly turning the filter on or off without entering the Query Builder dialog box and removing the filter?
4
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1answer
172 views

How can values in the attribute table be refreshed automatically when a geometry changes?

I can't find a solution for auto-refreshing attribute table data. For instance, how can the data related to features of a Shapefile (e.g., the area) be updated if the feature geometry is changed.
0
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1answer
147 views

Qgis - unwanted offset when using raster interpolation plugin

I'm using QGis and I have a set of points with a depth attribute. I'm trying to make an interpolation using the Raster interpolation plugin (Raster -> interpolation -> interpolation). But when I do so ...
9
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1answer
824 views

How can I improve the speed at which QGIS 2.4 handles network data? (Seems much slower than 2.2 - even with small datasets)

I recently downloaded and installed QGIS 2.4 Chugiak on a Windows 7 64-bit machine with a quad core processor and 8GB RAM. I'm having a few problems using datasets of all sizes from a network drive - ...
3
votes
1answer
158 views

Resampling with Python console (QGIS): number of parameters

I am trying to resample two raster layers with Python console in QGIS with this code: outputs_0=Processing.runAlgorithm("saga:resampling", 'G:/DOCTORAT/2014/Incendis/Dades/LST/LST_TERRA/Tiff/2012/...
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0answers
60 views

Changing original source projection

I am attempting to match up 2 raster layers, both a OS survey map and some independent survey data. The map I know to be in the correct position, However the survey data shows a layer extent of (layer ...
2
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0answers
186 views

Exporting SHP files into Autocad readeable files

I have a full water supply network drawn in a shapefile which I created using Qgis 2.2.0. Now I need to export it into a format that enables me to open it in AutoCAD. I am trying to export it as a dxf ...
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0answers
446 views

How to force geometry type in (WFS) layer in QGIS

I have an external WFS source serving mixed geometry types - in other words, I have no control of the source. When adding the layer QGIS sets the geometry type to line and thus I am unable to style ...
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5answers
3k views

Solutions for uploading maps to GPS (forestry maps: roads, trails, hydro, polygons)?

I'm using a QGIS 2.2.0 Valmiera on a Windows 8.1 system Desktop. I'm a forester and I would like to have a cheap solution to load maps into the handheld Garmin 60, 62 or 64 series GPS. Free would be ...
0
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1answer
166 views

how to select line segments not overlapped by other layer's lines

I have two shapefiles of forest roads (mostly dirt) from different sources, covering the same area. The goal is to build one shapefile of roads that is the composite of the other two. Layer A is ...
2
votes
1answer
398 views

How to use the MMQGIS plugin through the Python console?

I know how to make Hub Lines using the GUI, I want to know how to do the same using the Python Console, a tutorial would be great. Thank you
5
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0answers
7k views

Open Layers Plugin and QGis 2.4 [closed]

I have installed Qgis 2.4 with the stand alone installer and the OSgeo4w too on three different computers. Two have win7 64 and one vista 64. It seems that the Open Layers plugin does not work anymore....
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0answers
198 views

Is there a way to QGis read an SDE.ST_GEOMETRY field?

this is the type and name that Qgis displays for me when I connect with a oracle table,it is not displayed as a geo column, there is a setting I'm missing? Can Qgis Read this type of data?
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1answer
719 views

Using Union on multiple shapefiles to output single result

Using QGIS 2.2 and Python, I would like to use the Union algorithm on multiple shapefiles (contained in a folder TEST) which would then produce single shapefile containing all the data. Currently ...
2
votes
2answers
447 views

How to switch to edit mode vector layers, in pyqt application based on qgis?

I do QGIS based application, I need to implement the ability to modify the geometry of vector layers in manual mode (editing nodes), how to do it?
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0answers
404 views

How to extend lines from “station line” plugin in QGIS

I'm trying to create cross sections using the station line plugin (and then import them to HEC RAS). But I can't seem to create lines longer than 99.99 meters from each side of my river line. Is this ...
2
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1answer
166 views

Low quality legend symbols in QGIS

The legend symbols in my QGIS map composition render very pixelated, like this: However, they render fine for actual point data. They appear this way within map composer, when printing, and when ...
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1answer
144 views

QGIS copy and paste error: “no features could be successfully pasted”

What does this error message mean, and how can you get more info on what might be the cause? "no features could be successfully pasted" (or more generally, not all of the selected items could be ...
1
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1answer
102 views

Why is interpolation adding too much heat

I am interpolating geo data using qgis. The data is in the form of lat,lon,count. The path of the collected data is shown as a mostly transparent line. The resulting heatmap it produces is shown. ...
0
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1answer
226 views

from Qgis 2.2 to Garmin Base Camp: how to get rid of the white frame?

I have geo-referenced a raster map in QGIS 2.2 (with the georeferencer plugin) and I can also create a kmz file for my garmin (Dakota20) with GarminustomMap. However the kmz file, as imported in Base ...
2
votes
1answer
242 views

How to exactly georeference in QGIS

When I georeference a raster image in QGIS, it's always a bit displaced as in the attached image (the cyan polygon is the template, the red border is the georeferenced image), although I try to set ...