Questions tagged [qgis-plugins]

Software plugins that add functionality to the QGIS package

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7
votes
2answers
2k views

Loading a Postgres view using PyQGIS

Under QGIS 1.8 on Windows 7 I have this problem with my pyArchInit plugin: I need to load on the map canvas my geometries from a PostGIS layer. Till the 1.7.4 version I use the method explained on the ...
8
votes
3answers
7k views

Unable to Install External QGIS Plugins

I'm using: QGIS version 1.8.0-Lisboa on Windows XP, installed using OSGeo4W I am behind a proxy but I have configured it in Options > Network. When I go to Plugins > Fetch Python Plugins.. All of ...
4
votes
1answer
988 views

Plugins are not installed in qgis 1.8.0 Lisboa

I am trying to install plugins in qgis1.8.0 Lisboa but error message is appear as follows, Failed to unzip the plugin package. Probably it's broken or missing from the repository. You may also ...
1
vote
2answers
193 views

Fetching field values from uncommitted features on Qgis

I'm trying to fetch a feature's field value on Qgis, I use QgsFeature.attributeMap().value(cont int & key).toDouble() This works fine for committed features but it always returns " 0 " if the ...
2
votes
0answers
313 views

What do I need to build a C++ plugin on windows 7?

I want to make a plugin in C++ and I need to write and build it in windows (Im better with *nix systems). While I have skimmed the various updated C++Plugin docs I can understand if I need to build ...
4
votes
1answer
804 views

Freehand plugin behaviour

I've installed the QGIS Freehand plugin. When drawing a polygon, QGIS automatically closes the polygon when the pen leaves the graphic tablet : Is there any way to turn this feature off, or at least ...
1
vote
1answer
2k views

How to install sda4pp plugin with missing repository in QGIS

I see that the repository for the sda4pp plugin went down in 2011. Does anyone know if there is another way to download the plug-in with the repository missing? If this plug-in is no longer ...
1
vote
1answer
3k views

How can I create a custom form to display the attributes of the selected object?

I have already appealed to the selected objects, and found a way how to put them in a MsgBox. But I need to output was in the form
5
votes
1answer
3k views

Changing attribute data types using PyQGIS

OK, so I've already asked a question how to access attribute data types when developing plugin for QGIS, using PyQGIS. And one helpful member said i should use pendingFields() method on the current ...
2
votes
1answer
1k views

Problems with Google layers plugins

I currently use Quantum GIS 1.7.4 at work and I have trouble to open Google layers extension. In fact, when I start QGIS 1.7.4 the following message appears and I cannot use Google layers extension. ...
4
votes
2answers
2k views

How can I add OpenLayers layer from the Python console?

I am new to the Python console. How can I add a layer from the OpenLayers plugin from the Python console?
2
votes
1answer
266 views

Qgis C++ plugin translation

I'm having issues with the translation of my Qgis plugin. static const QString sName = QObject::tr( "Editeur Monoscopique 3D" ); MyClass::MyClass( QgisInterface * theQgisInterface ): QgisPlugin(...
46
votes
1answer
63k views

How to install a QGIS plugin when offline?

Due to various IT policies at my workplace, QGIS is installed on a machine that is not connected to the internet. I wish to install a couple of QGIS plugins on this system. I have downloaded the ...
5
votes
1answer
3k views

Loading older google satellite image with OpenLayers plugin in QGIS?

I am using the OpenLayers plugin in QGIS. I want to use the google satellite layer, but there is a cloud on the specific image. Is it possible to load one of the older google satellite images? ...
1
vote
1answer
1k views

How to create a button with QGIS [closed]

Je suis nouveau sur le site et je suis francophone, je cherche a créer un bouton avec QGIS mais je n'ai pas réussi à faire ce petit exercice . s'il vous plait s'il y a un tutoral ou quelqu'un qui peut ...
1
vote
2answers
363 views

Toggle editing option in plugins

I am working on python plugins for QGIS.I developed the plugins same as RT SQL LAYER plugins. When we draw the layers using query builder of "Add Postgis Layer" option,toggle editing option is ...
2
votes
1answer
579 views

Using nviz module in GRASS through qgis error

I'm an new user to qgis/GRASS and I've run into a problem with the nviz module. In trying to visualise a raster heat map created from vector contours in 3D using the nviz module in GRASS tools in ...
0
votes
0answers
132 views

How to turn off Google map data copyrighted window in Google Street layer (Qgis - Openlayers Plugin)? [duplicate]

Possible Duplicate: How to close watermarks in openlayers plugin After a few weeks not using Qgis, this morning I opened it up, accepted a request to update Openlayers Plugin. Right now, I found ...
4
votes
2answers
966 views

How to configure 3rd parties for the sextante plugin in qgis?

I'm currently exploring the enourmous potencial that the sextante plugin for qgis has to offer. The model builder will surelly be a very handy tool. The problem is I'm not beeing able to run 3rd ...
15
votes
2answers
12k views

Creating sectors for telecom towers

I work in the Mobile networks industry and i took up a task to create a plugin for QGIS using c++/python that does the following: step 1: Create points corresponding to each mobile tower based on Lat/...
8
votes
2answers
4k views

Get a pixel value

How can i do this operation: I want to get a pixel value fro the satellite image (Landat, GeoTIFF, 7 bands) using qgis-python. What operators should i use? (for example in qgis's Python Console)
1
vote
0answers
143 views

QgsComposerArrow

>>> QgsComposerShape <class 'qgis.core.QgsComposerShape'> >>> QgsComposerLabel <class 'qgis.core.QgsComposerLabel'> >>> QgsComposerLegend <class 'qgis.core....
1
vote
0answers
527 views

Installation problem with XY Tools [duplicate]

Possible Duplicate: How to install Pyton libs for XYtools to read Excel files I was using XY Tools plug-in for QGIS that converts Excel files into attribute table and shape files etc, but once I ...
2
votes
1answer
355 views

QGIS Cross Tab of Towns and Routes

Using QGIS, I have a layer with 100 towns. I have another layer with 200 cycle routes, each with a different name. I want to create (automatically natch) a table that will help the people in each town,...
1
vote
0answers
92 views

Postgres Layer not showing as editable when creating an offline project

My postgres layer in a QGIS saved project does not appear in the "Creat Offline Project" dialog as editable. I want to check it out for offline editing? If I uncheck the "Show only editable layers" ...
2
votes
3answers
1k views

How to shift the Map a little bit?

I'm having trouble with two maps, both UTM33N/WGS84. They should be exactly on top of each other but there is a slight shift between them of probably a few hundred meters or so. I Tried to adjust ...
20
votes
6answers
30k views

Accessing QGIS Plugin repositories from behind Proxy

I have been trying to teach myself QGIS by using this forum and others to help. Most of my questions can be answered by downloading plugins that are available through 3rd party repositories but for ...
1
vote
1answer
399 views

Spatial Query plugin broken in MacOS version?

I'm running QGIS 1.7.4-4 on a MacOS 1.6.8. I'm trying to use the "Spatial Query" plugin but it's not loading. The plugin is activated and I can see it in the main menu Plugins > Spatial Query > ...
1
vote
1answer
391 views

Porting QGIS C++ plugins to other QGIS installations

I developed a C++ plugin for QGIS using VC++ express 2008 and a QGIS dev release (1.9.90 alpha), my plugin works fine on this release and now I want to port it to other QGIS installations, so I copied ...
7
votes
3answers
2k views

How to close watermarks window in QGIS Openlayers plugin?

I'm using Quantum GIS Ver. 1.7.4. I have upgraded openlayers plugin 0.7 to 0.9. However when I open google satellite, a watermarks/copyright dialog box "Data Peta@2012 ..." appear in the middle of the ...
6
votes
2answers
1k views

How to filter the MouseWheel event in a QGIS C++ plugin?

I’m developing a C++ plugin for Qgis and I want to filter/override the mouse-wheel event. I created a “maptool” to select a polygon feature on a vector layer, the feature has two attributes : an id &...
2
votes
0answers
96 views

Is there a way to link eVis with time manager in QGIS

I have a point vector layer created from way points of a GPS. I then used the eVis plugin to view geotagged photos for each of these point. I also used the time manager plugin to play through the ...
18
votes
3answers
8k views

Visual Impact Assessment in QGIS or GRASS

Is it possible using QGIS or GRASS to perform a Zone of Visual Impact assessment? E.g. where can a 100m high structure be seen at a viewing height of 1.8m within 30km, taking into account elevation (...
1
vote
1answer
909 views

How to handle geometry change in vector layer?

I'm building a plugin in Python that manage some lists of WKT from different intern sources (web services, bd, etc..). I can display every source without any problem. For displaying them, I use a ...
2
votes
1answer
258 views

Keeping a vector layer always on top

I want to know how to keep a layer always on top of other layers! After adding a vector layer ( QgisInterface->addVectorLayer ), I want that layer to always be displayed on top of layers added later. ...
3
votes
1answer
6k views

How to open existing sqlite DB in QspatiaLite plugin?

Using QspatiaLite plugin in QGIS I'm able to create a new database and work with it (load/edit/import/export data). But how can I add a connection to an existing database? How to add an existing ...
4
votes
1answer
459 views

Setting border-style to 'no pen' using QgsGraduatedSymbolRendererV2

I am developing a QGIS plugin that, after a series of inputs, will produce a thematic map using the QgsGraduatedSymbolRendererV2. Because the polygon are very small, the boarders make it such that ...
1
vote
1answer
287 views

Python in QGIS is missing SQL drivers in PyQT4

I am developing a QGIS plugin and need to create a table view in my GUI that I have been designing with QT Designer. I have PyQT4 installed but I have noticed that I have 2 Python directories. I have ...
4
votes
4answers
8k views

How to connect the selectionChanged signal with pyqt?

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 I ...
3
votes
1answer
1k views

How to fix "Couldn't load plugin ..." and "ImportError: No module named ..." in QGIS plugins?

After installation of Quantum GIS (QGIS) I tried to use Table Manager Module, but I can't do it. Here is the message: Nem tudom betölteni a 'tablemanager' modult innen: ['C:/PROGRA~1/Quantum GIS ...
4
votes
1answer
970 views

Where to activate "Vector" Menu?

I am a QGIS newbie trying to work through Lex Berman's QGIS tutorial. I'm stuck in the "join" unit, because I do not see a Vector menu on my menu bar. The screen shots show that there should be a ...
2
votes
0answers
182 views

Are there Plugin Compatibility Issues between QGIS 1.6.0 and 1.7.4?

I've been working on a QGIS plugin on Quantum GIS 1.6.0 Copiapo with Python 2.5 that calculates additional values for eachf feature of a vector layer and adds them to the .dbf. We've just upgraded to ...
2
votes
0answers
679 views

Trouble with Python plugins on QGIS [closed]

This question has been bugging me for a while now, and I still haven't managed to solve it, so I'm giving it another go, hopefully someone may help me out. I've been having problems loading several ...
3
votes
2answers
634 views

How much information does QGIS's OpenStreetmap Plugin download?

I am using the OpenStreetmap Plugin for QGIS to download the information for my university extent. The information as I see is downloaded in vector format divided into Points, polygons and lines... ...
9
votes
4answers
5k views

What QGIS plugins do you consider to be essential? [closed]

What QGIS plugins do you consider to be essential - vector, raster, geoprocessing plugins?
28
votes
2answers
8k views

Getting started with QGIS plugin development?

I wish to develop a simple plugin for QGIS, which will open some data, and perform some specific processing. I tried searching on the QGIS wiki, but only found this link : http://www.qgis.org/wiki/...
26
votes
1answer
6k views

Accessing QGIS plugins in Python?

Is there a way to access QGIS plugins in Python? I'd like to write a script to do some geoprocessing, and I'd like to use the clip, regular points and convex hull tools in fTools, as well as the ...
3
votes
1answer
2k views

Solving QGIS error Python Plugin is Broken?

I tried following the steps to build a python plugin for QGIS. (step 3 is where I am stuck at) 1) I used the Plugin Builder plugin to build the initial set of files. I call my plugin "...

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