Software plugins that add functionality to the QGIS package

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0answers
252 views

Problem using addVectorLayer() in Qgis

I am confused a bit, using addVectorLayer() in QGIS plugin. I want to add and display a vector layer, directly when QGIS opens. Hence I am using addVectorLayer() in _init_() function of my plugin. ...
2
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0answers
692 views

How to change feature's geometry?

Hy, I'm creating my layer like this: crs = core.QgsCoordinateReferenceSystem(4326, core.QgsCoordinateReferenceSystem.EpsgCrsId) uri = "Polygon" uri += '?crs=' + crs.authid() uri += ...
3
votes
1answer
681 views

r.watershed analysis error from raster map being in different zone and unable to be opened

I tried running my DEM (geotiff) file through the r.watershed program by the GRASS GIS plugin of QGIS. I believe the error message results from a raster map in the different zone than the current ...
7
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5answers
16k views

How to install Openlayers plugin on Qgis 1.8?

After having installed Qgis 1.8 i am not able to find the Openlayer Plugin. In "the old days" I know I was supposed to check "add 3rd party repositories", but that button has disappeared? I tried ...
0
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0answers
31 views

Set buffer radius in metric units in qGIS [duplicate]

Possible Duplicate: What is up with QGIS buffer tool units? A similar question to this one has already been asked QGIS - Change unit of measure from degrees to meters, but none of the steps ...
4
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1answer
270 views

Surface covered by buffers in QGIS

In QGIS, I have plotted buffers around points. I would like to calculate the area which falls under buffers without over counting due to buffer overlaps. Is there a quick and easy way to do this?
2
votes
1answer
2k views

How to install fTools and Table manager

I've just make clean install of Qgis Lisboa under Ubuntu Precise. Latest Qgis version under Windows XP is very unstable (crashes every few minuter while editing shp file). After new installation ...
3
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2answers
681 views

How to connect a PyQGIS plugin with Postgres?

I have some questions for you: I created a python-plugin in QGIS, then I created a Qt gui fom my plugin and at last I created a Postgres DB now I need to make a connection between Qt-gui and ...
5
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1answer
1k views

QGIS - export a project with dependencies

I was wandering if there was a way to save a specific project with all layers as dependent files to make it easy to share with collaborators. for example, create a zipped or non-zipped folder ...
4
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1answer
265 views

QGIS Globe UnsupportedOperationException

My QGIS Globe is not working: After starting it, that massage pops up in a endless loop: UnsupportedOperationException: GeometryGraph::add(Geometry &): unknown geometry type: ...
5
votes
1answer
3k views

Is there a way to export QGIS layers to KML?

has had anyone had any luck with the new experimental plugin qgis2kml? I keep getting the error msg layer : format not yet supported I had a look but the author has not provided any documentation, ...
4
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1answer
606 views

How to load 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 ...
7
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1answer
2k 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
865 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
137 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 ...
1
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0answers
263 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 ...
3
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0answers
362 views

Freehand plugin query

I've installed the QGIS 'Freehand' plugin and I have a query regarding it. When drawing a polygon qgis automatically closes the polygon when the pen leaves the graphic tablet. Is there any way to ...
1
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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
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1answer
2k 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
3
votes
1answer
801 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 ...
0
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1answer
246 views

Qgis : QGraphicsTextItem's position not updated?

I'm using QgisInterface->mapCanvas()->scene()->addItem(QGraphicsTextItem) to add a QGraphicsTextItem to the map canvas. The problem is that when I use the pan tool to move the display the added ...
0
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0answers
63 views

How can I create form with controls using QGIS(python)? [duplicate]

Possible Duplicate: How do I build a custom form for entering attributes in QGIS Help me, please create a form with controls using QGIS plugin. Thanks!
2
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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
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2answers
797 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? Thank you
2
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1answer
203 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 ): ...
22
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1answer
17k 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 ...
2
votes
1answer
90 views

“Find by attribute” plugin error

This is the error message, when launching the plugin. I hope this is the right place, where to report this kind of message. Any help would be appriciated! An error has occured while executing ...
3
votes
1answer
654 views

Loading an 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? Like ...
1
vote
2answers
189 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
491 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
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0answers
63 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 ...
4
votes
2answers
925 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 ...
7
votes
1answer
2k views

How can i create sectors for telecom towers

friends i am seeking advice from the GIS community 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 ...
4
votes
1answer
990 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) ...
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0answers
98 views

QgsComposerArrow

>>> QgsComposerShape <class 'qgis.core.QgsComposerShape'> >>> QgsComposerLabel <class 'qgis.core.QgsComposerLabel'> >>> QgsComposerLegend <class ...
1
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0answers
217 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 ...
2
votes
1answer
200 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 ...
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0answers
75 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
2answers
372 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 ...
7
votes
3answers
6k views

How to access QGIS Plugin Repositories from behind a 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
228 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 > ...
2
votes
1answer
302 views

How to port 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
4answers
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 ...
0
votes
0answers
22 views

MapCanvas : Mouse-wheel event filtering/overriding [duplicate]

Possible Duplicate: MouseWheel event filtering on Qgis 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 ...
5
votes
2answers
531 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
77 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 ...
15
votes
3answers
4k 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
334 views

How to handle geometry change in Vector Layer?

Hy, 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 ...
2
votes
1answer
115 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. ...
2
votes
1answer
1k 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 ...