Software plugins that add functionality to the QGIS package

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QGIS 1.8.0 ask me to install scipy

I need help in a step by step to install scipy via QGIS or via python, I'm not familiar with python language so the guide of Nathan's blog wasn't useful to me due that OSGeo4W don't recognize the ...
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84 views

QGIS 2.4: plugin changes map tool canvas click behavior from 2.0

I had created a plugin for QGIS 2.0 to add new features more easily. It involves changing extents and updating snapping options along with triggering the default actionAddFeature(). However, I've ...
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5 views

Pyqgis 2.2 : get signal on feature added : error message

For my pyqgis plugin 2.2, I try to: def logFeatureAdded(self,layerId,addfeatures): message = str(layerId) + " has features added: " for feature in addedFeatures: message += str( ...
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10 views

Pyqgis 2.2 : zoom to layer extent?

Regarding my plugin pyqgis 2.2, i can load a vector layer succesfully. But when i try to zoom to the layer extent it does not work. How to do in order to zoom to the layer extent?
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25 views

Get signal on edited feature?

Regarding my pyqgis plugin 2.2 , I've implemented signal on a vector layer event successfully. For instance, whenever i create a new feature, i can read a new basic message appeared via QGIS logging ...
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1answer
30 views

Pyqgis 2.2 : How to allow editing on layer and features

I'm writing a pyqgis plugin with qgis 2.2 I succeeded in accessing and displaying vector data (geometries & attributes). Now I would like to allow editing for all my layers and all features ...
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12 views

Pyqgis :2.2 : link between a signal and an event

I'm writing a pyqgis 2.2 plugin with qgis 2.2 I succeeded in accessing and displaying vector data (geometries & attributes). I succeed also to create a 'beforecomitechanges' signal ( emitted, ...
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2answers
140 views

How to get the file paths of the loaded layers in a QGIS plugin?

I am very new to GIS, QGIS and Python so please bear with me. I am using QGIS 2.0 and I would like to develop a QGIS plugin that would display the raster layers of the main window in order to allow ...
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30 views

Modifying properties of Attributes Table in QGIS?

In my QGIS project I'm using vector layers that require a lot of data inputting/editing. The problem is that some of the data I'm inputting varies greatly in matter of length and structure (various ...
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22 views

Are there reference manual pages anywhere for QGIS built-in “buffer” and plugin “points2one”?

Perhaps I am missing some quick pop-up help mechanism, but as a relative newcomer to QGIS (having cut my teeth on ArcGIS 10.1), I am struggling to find reference manuals (i.e. explanations of all ...
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1answer
87 views

Qgis 2.2 error plugin manager/installer error

I get this error at startup Ocurrió un error durante la ejecución del siguiente código: import pyplugin_installer Traceback (most recent call last): File "", line 1, in File ...
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8 views

change symbology of an graduated renderer in qgis

In my plugin(c++) I add a vectorlayer to map, then I change the symbology of the QgsGraduatedSymbolRendererV2 of this layer. After this I refresh the map with ...
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2answers
107 views

How to copy attribute values of fields in selected features of one layer to another Qgis programmatically?

I am trying to get the values of attributes of the selected features of a layer field by field and copy to another layer that I created in qgis with pyqgis. Is here a example for this. Every example ...
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1answer
135 views

PGRouting Layer plugin error in QGIS 2.2

I am trying to do some basic computations using the PGRouting plugin for QGIS, but I am getting this error all time: An error has occured while executing Python code: Traceback (most recent call ...
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2answers
42 views

How can I project a power line net in QGIS?

I am working with power lines net using the software QGIS. I would like to know which plugins or tools do I need to be able drawing (projecting) them.
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2answers
535 views

Where has the cartogram plugin for QGIS gone?

This plugin used to be downloadable from Carson Farmer's plugin repository page. However, the repository is broken. An old version of the plugin source code is still available at ...
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2answers
291 views

How do I successfully install the LecoS plug-in for QGIS 1.8

I have been trying to follow the instructions given here, but repeatedly get an error message pop-up titled "Mount" stating Access is Denied. Does anyone have a solution please?
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16 views

More than two level group on Lizmap WebClient

i can see level more than two group on lizmap plugin, but when i save for webClient, it just appears two level group on Lizmap WebClient legend layers area. i want to see on Lizmap WepClient like ...
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25 views

Points generated using mmqgis are invalid

I used mmqgis plugin to geocode some addresses, he pointed to have found them all. But the screen shows only a point when there are more than 100, in the attribute table all appear. I loaded this ...
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23 views

MMqgis geocode addresses as intersections

I'm using the plugin mmqgis to geocode some addresses. But in my database has some registered addresses as intersections, eg Av Av Test 1 & Test 2 Tested directly in Google Maps and did not ...
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1answer
26 views

What causes this error when loading plugin

After installing pyspatialite on my Mac two plugins fail to load with this error:: This plugin is broken invalid literal for int() with base 10: '2-spatialite' I am fairly sure that the offending ...
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1answer
133 views

Can I add entries to the layerlist context menu?

I am implementing a python based plugin for use with QGIS 1.8. Most of it's user interface is contained within a QDockWidget but there are some layer specific controls I would like to append to the ...
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1answer
40 views

Can QGIS table editor achieve similar results to Pivot tables in Excel?

Is it possible to achieve similar results to Pivot Tables in QGIS table editor so as to use just QGIS instead of several software solutions? Or are there maybe some plugins capable of achieving those ...
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1answer
31 views

How to split Polygons by line grid?

I want to split a polygon by a intersecting line into different parts, exactly like in this post(Qgis - Is there a way to split a polygon layer with a line layer?). I have a vector grid to cut the ...
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19 views

How to write a custom map canvas item by subclassing QObject and QgsMapCanvasItem?

I'm writing a QGIS python plugin where I place some QgsVertexMarkers on the canvas like this: marker = QgsVertexMarker(self.canvas) marker.setCenter(QgsPoint(point[0],point[1])) Now i would like ...
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1answer
131 views

Vector affine transformation in QGIS2

In QGIS 1.8, I can transform my point layer with the plugin "Affine transformation". So, this plugin don't exist in QGIS 2.0. Do you know a method to simply translate (i.e : X -> X+30000) in QGIS 2 ? ...
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17 views

plugin list not appear

I use QGis 2.4 over linux ubuntu 12.04 (a very standard situation :D) Why does the list of installed plugins not appear in the program?
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17 views

compile QGIS-plugin for Windows: problem with gdal_i.lib version

While compiling my plugin for QGIS 2.2 there are no errors, but it ist still not loading in QGIS because of an dll error. (function not found) I think the problem is at the gdal version. The ...
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20 views

Connecting ArcSDE to Quantum GIS for dummies?

I really have a need to be able to connect to and edit ArcSDE data in Quantum GIS. This question has been asked before and apparently is possible, but the instructions are just not specific enough ...
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1answer
93 views

QGIS QgsPluginLayer broken on 2.0.1?

Is there a generic issue with the QgsPluginLayer class in QGIS 2.0.1? When I take the basic Watermark sample from here: https://github.com/sourcepole/qgis-watermark-plugin and make a couple of mods ...
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1answer
620 views

Getting polygon shapefile node coordinates and point order

I am trying to get the coordinates of each node of a polygon in QGIS. What I basically did is use the following tools: Vector -> Geometry tools -> Extract nodes Vector -> Geometry tools -> Export ...
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4answers
588 views

Unable to load GRASS plugin

I upgraded from QGIS 1.7.0 to 1.8.0, including updating GRASS to version 6.4.3. Since then, GRASS isn't any longer listed in the Fetch Python plugins. I uninstalled and re-installed the whole package ...
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1answer
113 views

MMqgis (hub distance) error in distance

So I am trying to calculate the distance of several points to a coastline, using hub distance (mmqgis plugin) in Qgis Dufour 2.01. I am using the default coordinate system (WGS84) and I, already, ...
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0answers
63 views

offline editing not working on qgis mobile

I would like to work with offline editing using Qgis desktop and Qgis Mobile, in the first essay i tried to use Qgis 2.2 and its offline editing plugin , it has worked fine then i moved the qgis ...
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1answer
56 views

QGIS 2.4 (and 2.0.1): How to uninstall/reinstall a plugin where uninstall is disabled?

Plugin Raster->TerrainAnalysis->slope which had initially worked, started showing what another questioner referred to as a "crazy histogram": qgis2 slope analysis from NED data gives crazy histogram ...
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31 views

View tiled shapefiles in QGIS 2.0 or greater as one layer?

I have tiled vector data in shapefile format. I need to view them in QGIs 2.0 or greater. I was not able to find any usable solution (merging is not the way). I have tile indexes, which I use for ...
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15 views

Problem with Gpstools Plugin

I installed QGis 2.4 either with the standalone and Osgeo installers on a win7 Pro 64 laptop with 4 gb of RAM and I have the following problem When I invoke GpsTool either by the icon or the vector ...
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2answers
691 views

Simple automated way to split all lines in layer at vertices using QGIS?

I want to automatically split all lines in a QGIS layer at their vertices (like this). I've done a google search and found this article, which is quite close but the workflow is complicated. Because ...
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1answer
59 views

Possible to run “Merge shapefiles to one” algorithm from Python script?

Developing a python script in QGIS 2.2, I can run algorithms from the Processing plugin fine such as those from QGIS geoalgorithms and SAGA. Can you do the same for the algorithm "Merge shapefiles to ...
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1answer
113 views

visualize bounding box to a polygon

I try to make plugin in QGIS that compare 2 bounding box data, ex: (-32.61442167739459, -32.017601026186576, 13.015663782506067, 13.428145228091406) and (-38.6102467739459, -38.017601026186576, ...
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1answer
385 views

QGis 2.0.1 mapserver extension missing

I tried to export my Qgis projects to mapserver, using RT mapserver extension, because there is not any other extension in my version of QGis.(QGis 2.0.1 Dufour on ubuntu 12.04 LTS). After installing ...
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31 views

How to programmatically add a new plugin repository in QGIS?

How can I add the name of a repository and URL to the third-party plugin repository using python in QGIS 2.01?
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3answers
920 views

How to connect the selectionChanged signal with pyqt?

Hi I am developing a plugin for Qgis in python, I need to connect the sselectionChanged signal emitted when a feature of the layer is selected, I could not find any examples on internet, here is what ...
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1answer
35 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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3answers
230 views

Calculating MCP in QGIS

QGIS 1.8.0. Scipy installed. Statsmodels installed. Using Sextante to try to calculate MCP. When I run the MCP calculation from the Toolbox, a layer is added to the file, but the layer doesn't ...
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1answer
19 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 ...
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1answer
24 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
497 views

How to debug 'Layer is not valid error' from Python plugin?

I'm trying to understand what goes wrong with a QGIS python plugin. Basically I'm trying to render a series of POINT. The query works fine, at least giving it by hand from inside PostGIS DB: "SELECT ...
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43 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 ...
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1answer
54 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