Software plugins that add functionality to the QGIS package

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Installing GarminCustomMap: “missing _gdal_array module” error

I've used the GarminCustomMap plugin in QGIS 1.8 without troubles. But now, with QGIS 2.0, when I try to install it, I get the following message "missing _gdal_array module". Any idea how to fix this? ...
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1answer
87 views

Changing CRS for basemap from OpenLayers plugin

Relatively new to QGIS here and I haven't been able to find this question answered yet. I'm working on plotting data from NYC (Queens, specifically) and I would like to overlay my heatmap on a basemap ...
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2answers
321 views

How to avoid “Handle bad layers” message when using QGIS Flowmapper plugin?

In QGIS, if I close a project and try to open it a few days later I often get a message that says "Handle bad layers". This is very frustrating because when I open the project various layers will have ...
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2answers
863 views

Make a polygon from intersecting lines in QGIS, using Polygonize or similar?

In QGIS, I want to make polygons from a set of intersecting lines. Looking at the screenshot here, I want chop the purple line (it's a closed line, not a polygon) where it crosses the green and blue ...
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0answers
48 views

Zonal statistics returns wrong values in QGIS

I used zonal statistics for a simple task: to transmit raster pixel values to vectormap which contains squares as big as the pixel size is. The problem is that the values of the outcome are not ...
3
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1answer
143 views

how to snap two line vertex in two different layers used in QGIS

I want to snap between two poly-lines from 2 different layers (Layer1 in Brown and Layer 2(postGIS layer) in Pink color- ), but my snap option don't work. I have changed the tolerance to different ...
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1answer
43 views

How to randomly select from existing points within each polygon?

I have a polygon layer (where each feature has a class attribute), and a point layer, and there are at least 10 points within each feature of the polygon. Is there a way to randomly select only "k" ...
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2answers
901 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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43 views

OSX: Installing GRASS addons in qGIS?

I would like to install r.stream.basins in GRASS through qGIS (2.0.1-Dufour). I tried using g.extension ext=r.stream.basins and got the error "the 'make' program is required. Please install first". ...
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1answer
69 views

Closed source plugins [duplicate]

Are you allowed to develop closed source, commercial plugins for QGIS? License is GNU GPL, which is normally very restrictive. Update: Assume it is a python plugin (possibly open-sourced), that ...
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1answer
35 views

Troublehsooting QGIS Time Manager in OSX

Though it worked with a sample .shp layer with 10 points that I fabricated, the plugin isn't working with the larger data set I am trying to use now (a couple thousand points). It correctly identifies ...
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1answer
128 views

QGIS autotrace plugin - when will it be ready?

Is there any news on when the MapInfo-style auto-trace plugin that Lutra Consulting has been developing, will be put up to the QGIS Plugins Repository? It was supposed to be this month, according to ...
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1answer
298 views

QGIS 2.0 Plugin: Select and Identify a Single Feature

given is a layer with some nodes on it and every node has some attributes(name, id, etc...). For showing up the informations of a single node I can use the "Identify Feature Tool". Choose the tool, ...
3
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2answers
186 views

How to handle PostgreSql 1:m relationship data by using “Data-Driven Input Mask” QGIS plugin?

I have 1:m relationship tables in my PostgreSql. I like to show the main table attributes as well as the relational table attributes (like grid rows) in QGIS attribute-edit-form. What are the entries ...
2
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1answer
123 views

Python Error while installing QSpatiaLite in QGIS 2.0

I'd like to install QSpatiaLite to my QGIS2.0 but the following error massage occured while installing with the pluginmanager: Couldn't load plugin QspatiaLite due an error when calling its ...
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1answer
215 views

How to use MOLUSCE plugin in QGIS?

I am trying to explore MOLUSCE ver 3.0.4 in QGIS Dufour. I am trying to simulate the land use change using this tool. I have following querries: It asks for Initial and final year at the first step. ...
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0answers
38 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?
2
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1answer
188 views

How to use “Data-Driven Input Mask” QGIS plugin?

I have installed Data-Driven Input Mask plugin in QGIS and added necessary relationships between PostgreSql tables. But I don't find any changes in the UI. How to enable/configure this plugin ...
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1answer
148 views

Query MYSQL database inside a python plugin

I am new to QGIS python development and I have a requirement to query the database and depending on the result do some processing in QGIS. I found how to create a connection to mysql db on python ...
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1answer
54 views

How to read the count of the cells with data with non “no-data” values ,in QGis?

How to read the count of the cells with data with non "no-data" values ,in QGis
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2answers
456 views

Trying to use a QGIS plugin - getting classFactory error

I've had to create a GIS for the company I work for, choosing QGIS over ArcGIS due to price (company doesn't want to buy another copy of ArcMap). In any case, it's not a HUGE GIS but it would be good ...
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2answers
703 views

Unable to load 'nviz' through GRASS

I am using QGIS 2.0.1-Dufouron on Windows 7. When I try to load nviz via GRASS, I get the message "Module nviz not found". Weirdly enough, I can load it via the toolbox and be able to 'run' it (it ...
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0answers
96 views

Qgis Dufour crashes when using QgsMarkerLineSymbolLayer from a python plugin

I'm writing a python plugin to create symbology for Line Layers. I want to use Svg file for line symbology. I tried with default symbol, and also get a crash. The layer get rendered, but when I zoom ...
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2answers
100 views

Georeferencer plugin will not load in QGIS

I have downloaded and installed QGIS. I would like to georeference an image using the core georeference plugin. When loading it no toolbar appears and the 'update', 'reinstall' etc boxes in plugin ...
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1answer
91 views

Can't open Spatialite plugin in QGIS

After installation, I got the error messages below when I click the Spatialite (V.7) Plugins: -------------------------------------------------------------------------------------- An error has ...
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1answer
125 views

How to use overview map with atlas plugin in QGIS 2

I'm using atlas plugin to batch generate maps. I insert an overview map but it doesn't get updated over iteration and generation of maps.Is it possible? If it's not, is there any alternative?
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64 views

QGIS 2.0.1: Changing layer properties with python console

I'm working on a plugin that will aim to ensure that the following steps either "transparent" to the user with one click :   Creating a table with predefined fields Record in this table in postgis, ...
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2answers
83 views

Qgis “Layers menu from project” plugin doesn't open files

Has anyone out there any experience with a plugin to Qgis called Layers menu from project? This plugin gives you fast access to layers that you specify in a Qgis-project file. It won't work on my ...
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2answers
249 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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3answers
262 views

How to export a Vector Layer with OGR2Layers Plugin

I'm using QGIS 2.0 Dufour on my Linux (Ubuntu 12.10).I'm download shapefile of Croatia country from this site (http://www.gadm.org/country) and i added a new vector layer where i created some ...
2
votes
1answer
154 views

Why does writing large shapefiles crash QGIS?

I'm trying to write large shapefiles with QGIS 2.0 API, using Python, which crashes QGIS. The data is composed of simple two point lines and a data table of five columns. A thousand features or so ...
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1answer
178 views

How to remove all selection from all registered layers using QGIS plugin?

I want to remove all selection from registered layer in QGIS using Python. I tried to clear the map canvas using: self.iface.mapCanvas().clear() self.iface.mapCanvas().refresh() but the ...
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1answer
131 views

How can I delete a shapefile using OGR?

In my QGIS Python plugin, I use shapefile layers and I am having a problem rewriting existing shapefiles. Is it possible to delete a shapefile from disk using OGR?
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0answers
66 views

setSubsetString with limit?

I have a layer with couple thousands objects in QGIS and I would like to create a filter of the layer where result would be only one object. I would like to do it in console or plugin. I am using ...
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0answers
26 views

plugin manager fault installation

i have posted once a question about not getting the "get more" icon within the plugin manager tab. I solved my problem by specifying the proxy server that supports the network to which my PC (windows7 ...
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0answers
11 views

Plugin QGIS error FPDF' object has no attribute 'y' [duplicate]

I try to make save as button in plugin QGIS Dufour 2.01 and want to save it as pdf file when i try save my file ( open file destination and then click save ) i got a error message This is the code ...
6
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2answers
223 views

Couldn't load plugin 'processing' on windows 7 64bit

I installed QGIS (2.0.1-Dufour Dufour, d94c044) using both the stand alone installer and the OSgeo4w installer and seem to have an issue with the processing plugin. At first I thought that there was a ...
0
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1answer
108 views

Plugin QGIS Error “QTextEdit.setPlainText(QString): not enough arguments”

I try to make save as button but i got this error message when try to save file in my directory File "C:\Users\Mr.Pakde/.qgis2/python/plugins\condition\conditiondialog.py", line 80, in saveAs ...
5
votes
1answer
126 views

How can I get the field index of the new layer in my script using Python?

I am trying to use layer.changeAttributeValue(fid, fieldIndex, value) to add values to a field in QGIS Basically, I'm creating a plugin which will, if a checkbox is ticked, create a new field, then ...
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0answers
16 views

which directory path does SEXTANTE work on? [duplicate]

I find recommendation that the SEXTANTE path shoud follow on http://fromgistors.blogspot.com/2013/06/configuration-of-semi-automatic.html saying "ATTENTION! The version 1.0.9 of SEXTANTE plugin has an ...
1
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1answer
53 views

is there significance difference between qgis version 1.8.0 & 2 to install plugin?

I am a Qgis learner on widows xp and I want to know whether I can install semiautomatic classification plugin onto Qgis 1.8.0 in the same way for Qgis 2. is there significance difference between the ...
5
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2answers
181 views

Can someone clarify some details about freehand line tracing in QGIS?

I have read several tutorials and questions here on this site, but I have some lingering questions/doubts that I would like clarified. My project is tracing roadways from a 1926 map so that I can ...
3
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1answer
46 views

How to store the CHANGES to a map database

I'm looking into providing a map amendment service for a particular map series. The service will help map owners look into the changes made to the operational features of the map, after the map was ...
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0answers
166 views

Best way to join and handle multiple attributes related to the same feature

this is not going to be a question, I'm just trying to find some advice. Suppose I have a point shape file (for example just 2 point, actually I have many more points) representing water control ...
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0answers
30 views

qgis python plugin enabling other plugins

maybe it is a stupid question but i am new in qgis. I developed some python plugins and they work correctly, now what i would like to do is to install a "door" plugin that after asked ...
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1answer
51 views

How can i create single feature fwith Combining Selected feature qgis?

I am trying to create a single Qgsfeature from the Combination of selected features in Pyqgis. Currently i create the feature using a loop over selected features and combine them 1 by 1. but this ...
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0answers
60 views

How do I successfully install LeCos plug in for QGIS2.0 on a Mac?

I have been trying without success to install the LeCos plug in on QGIS2.0 on my Mac. I originally tried it on QGIS1.8 but was unable to install the dependent packages (PIL,scipy and numpy). I updated ...
0
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1answer
85 views

How can i stop rendering Qgis

In my python plugin ,i select features from a vector layer dynamically using a loop and executing : VectorLayer.select(feature.id()) when i start the loop, the selection become very slow because ...
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0answers
146 views

Display plugin icon

I'm unable to setup the display of the toolbar icon for a plugin in QGIS 2.0. I have compiled the "resources.qrc" with the correct path and filename, and checked possible spelling errors in the code. ...
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0answers
81 views

How to load a SVG-File from QRC

I have a vectorlayer and want to give the points a svg-symbol. If I give the constructor an absolute path to my svg-file it works fine. Then i put the svg to my ressource file (qrc) and try to load it ...