Software plugins that add functionality to the QGIS package

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1
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0answers
32 views

create own plugin

With the QGIS plugin 'plugin builder' I create a new plugin. Then I followed the steps described on this website : http://www.qgistutorials.com/en/docs/building_a_python_plugin.html It works perfect ...
1
vote
1answer
68 views

DLL that uses QGIS

I want to create DLL which opens a dialog do some processing with QGIS and returns some data. I have searched many places but have not found the help I needed. I just want to read shapefiles and then ...
1
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1answer
31 views

store function attribute of class in QGIS plugin

I'm pretty new to python and pyqgis so the question will be pretty trivial.. I'm writing a plugin and in one script I have a class and some internal functions.. .... class ...
2
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0answers
13 views

It is possible to use a GDAL in plugin qgis? [duplicate]

I work on qgis plugin, and I say why not not work with GDAL, it'll be too useful. it is possible to integrate the GDAL library to develop QGIS plugin?
4
votes
2answers
1k 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) ...
2
votes
3answers
126 views

All layers disappear after using OpenLayers

Not trying to do anything complicated here... I have a .csv with date/time and lat/long data. When I load it into QGis as a delimited text layer, everything appears fine at first: But, when I try ...
2
votes
1answer
51 views

pyQGIS Plugin Window Behavior?

I have made the UI of a qgis plugin using qt creator. What I want is that the plugin window should stay on top of the qgis main window only but not other other applications. I have got this code: ...
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0answers
22 views

Is it possible to remove the QGIS icon from dialogs windows using pyqt?

I am developing a QGIS plugin using PyQt 4.x and the QGIS API. The plugin uses several dialog windows (QDialog Class). Some of them (I don't know why some do and others don't) show the Qgis icon on ...
0
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0answers
27 views

Arrows plugin returning Python error

I'm trying to run the Arrows plugin on QGIS 2.10 (Win 8.1), but I'm getting an error message: Traceback (most recent call last): File "C:/.../.qgis2/python/plugins\arrows\arrows.py", line 79, ...
1
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2answers
207 views

Is there an update for QMarxan plugin version 2.4?

Is there an update for the QMarxan plugin which at this stage only works on version 1.8.0. I did read on one forum that this was in the process of being developed. Any feedback much appreciated.
2
votes
2answers
85 views

Insert image in QGIS Plugin using qt creator [closed]

I'm building qgis plugin and i use Qt creator to creat a form. I want insert a image and i use a label to do this. In the field pixmap i choose a file image.png. I save and in QGIS i reload a plugin ...
2
votes
2answers
152 views

spectral profile for multilayer/time series

I am missing a spectral profile in QGIS which enables me to see the values for all bands of a given pixel. (absolutely necessary for multispectral and multitemporal/time series work) It seems, there ...
1
vote
2answers
191 views

Why is SAGA from the Processing Plugin not recognised?

Similar to this post: SAGA algorithms don't work in QGIS 2.8 except the fact that SAGA does not appear at all in the Processing Toolbox: As a check, I used the Python Console with the following ...
2
votes
1answer
56 views

Adding multiple plugins to custom menu in QGIS

I am new to Python and QGIS and attempting to create some plugins to replicate in-house tools used in other GIS programs. I have added a custom menu using Python and added the plugin to the menu using ...
0
votes
0answers
37 views

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 ...
1
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0answers
37 views

GDAL Plugin with a different version of GDAL aready built into QGIS

My qgis windows version is 1.8.0 Lisboa and use the gdaltools in version1.9.2. I want to use the plugin NetCDFBrowser, but this plugin need the gdal 1.10. I install 1.10 stand-alone gdal found here ...
1
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0answers
31 views

Plugin error: Photo2shape QGIS Pisa [duplicate]

I am trying to install the plugin Photo2Shape to my QGIS Pisa with no success. Does anyone know how to fix error: No module name exifread. ? What I need to do essentially is to add geotagged ...
0
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0answers
15 views

ETRS89-LCC true scale

With QGis 2.12.0 I made a map with the "EPSG 3034 ETRS89-LCC" I then modified the parallels of latitude with custom ones by the rule of 2:6, so from: +proj=lcc +lat_1=35 +lat_2=65 +lat_0=52 +lon_0=10 ...
2
votes
1answer
85 views

How to get the extent of a group of Raster layers and zoom to it with PyQGIS?

I want to find a way to zoom to a group within the QgsLayerTreeView. The group only contains QgsRasterLayer. The indirect approach would be to create a QgsRectangle and serve it to the ...
1
vote
1answer
131 views

TauDEM tools in QGIS 2.10.1 Pisa (Ubuntu 15) are not in the Processing Toolbox

My TauDEM tools have disappeared in my latest version of QGIS. Any ideas how to get them back? They used to be in the processing Tab. Using QGIS 2.10.1 TauDEM Ubuntu 14 stable My other tools are ...
1
vote
1answer
25 views

Get values from metatada.txt

Is there a built in function in PyQGIS to import the values from a plugin's metadata.txt? I am developing a plugin and want to show the version corresponding to the value from metadata.txt. Is there ...
1
vote
1answer
90 views

Fixed position PopUp window on hover and click on map exported from QGIS with qgis2leaf

I have exported a QGIS map to leaflet using qgis2leaf plugin. I would like to have the popup window open on a fixed position (for example top-left) both when the user hovers over the location marker ...
1
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0answers
30 views

Why doesn't the Undo/Redo History Widget run my custom undo/redo methods?

We're writing a Python plugin for QGIS 2.8.3. I've derived a class from QUndoCommand to contain "undo-able" work. When I push it onto the undo stack, its redo method gets called as expected, but QGIS ...
4
votes
1answer
58 views

Saving a calibrated route in QGIS for “future” use

Can a Calibrated Vector (after using LRS) be saved with M values, so that the file does not have to be calibrated every time is used? We're currently working on State road data, and it has many ...
1
vote
1answer
30 views

Using qgis:lineintersection in QGIS console?

console usage for qgis:lineintersection processing tool has been given as below processing.runalg('qgis:lineintersections', input_a, input_b, field_a, field_b, output) and i loaded a polyline layer ...
0
votes
1answer
169 views

Grass algorithms do not appear in Sextante toolbar of QGIS

I was having problems with some sextante algorithms in my QGIS 1.8, something related with wrong "os" name, I found a post in which reccomend to install the 1.9 master version. I clean uninstalled ...
3
votes
1answer
174 views

Need to Quickly Add Multiple Layers From Multiple Folders To QGIS Project

I have downloaded several imagery Zip files (content of each is jp2, jpg, jpw, xml, htm, and .dbf, .prj, .sbn, .sbx, .shp, .shx) and would like to quickly add this imagery to my working project in ...
2
votes
1answer
88 views

Loading layer from ComboBox in QGIS?

I made a plugin what has multiple combobox but i have problem with the information load from the second combobox it depends on the combobox 1st. In the first combo box, i can choose layers from the ...
2
votes
2answers
165 views

Set predefined scales in PyQGIS for standalone application

I am trying to figure out how to set the zoom scales to match those meant for OpenStreetMaps and Google Maps, etc., as I am using OSM for a basemap. I've looked all over the internet and can't seem to ...
1
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0answers
24 views

Pass information in external command line software from a python plugin file

it would be quite difficult to explain, I'll do my best.. I'm writing a plugin for QGIS (with the plugin builder, so the folder structure is straightforward). This plugin calls other software (that ...
3
votes
0answers
78 views

QGIS Azimuth and Distance Plugin curve

I have just installed the Azimuth and Distance plugin for QGIS and I have been testing it for use with our COGO workload. However when using the Anti-Clockwise ArcDirection method for a curve to the ...
5
votes
1answer
344 views

Where to report QGIS and QGIS-Plugin bugs?

I often find bugs in QGIS and its Plugins. I would like to ask about this on the internet but I do not seem to find the proper place to address this issue. Are there any instructions?
1
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1answer
74 views

Automatically detect the polygons(Buildings) In QGIS

Am trying to instal BREC plugin in QGIS 2.4 and 1.8 for the purpose of automatically detect the polygons(Buildings) from raster(TIF) file but i can't find that plugin, its not available in plugin ...
0
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0answers
5 views

Error when I want to open GrassRaPlaT

Can you tell me please why grass RaPlaT don't execute when I enter the command "grass64-d". First it try to be open than appear an error, like that" I'm looking forward for a solution Regards
1
vote
1answer
322 views

Joining table data to features in QGIS?

I am trying to make a map using QGIS but I cannot join table data to features in QGIS. In ArcGIS for Desktop you just open the folder and then join the tabular table with the spatial data table. ...
1
vote
1answer
26 views

Spline plugin doesn't active after being installed?

I just intalled Spline plugin But then it is not activated on the toolbar What can I do right now? I use QGIS version 2.10.1-Pisa. Windows 7 x64bit.
1
vote
1answer
115 views

QuickFinder QGIS plugin generates python errors

I have had no success setting up the QuickFinder plugin in QGIS to search project layers. Once I select the checkbox "Search in project layers" in the settings and create a new QuickFinder file, it ...
1
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0answers
17 views

Copy/Paste Qgis Plugin or derive new Plugin from existing one

I created a Python Plugin for QGIS and I want to experiment with various versions of this plugin. Is there an easy way to copy/paste a plugin or to create a plugin from another plugin? ( Otherwise one ...
2
votes
1answer
222 views

QGIS Calculate distance between polygon vertices / find vertices that are within distance

I have polygon layer and i need to find (select, so i can export selected to new layer) all the vertices that are in provided distance to each other (like 2 meters). I already tried: 1. Export ...
3
votes
1answer
356 views

When does iface.mapCanvas().layers() get updated to the contents of QgsMapLayerRegistry.instance().mapLayers()?

Since the topic might be a bit cryptic, I'll try to explain where my problem is. I am currently developing a Qgis-plugin, where I am creating and adding some layers automatically, which I would like ...
2
votes
1answer
14 views

QGIS Coverity Scan

Can anyone clarify/tell me if the QGIS Coverity Scans (https://scan.coverity.com/projects/qgis-qgis) include plugin source code for plugins listed on https://plugins.qgis.org/? If not, the Plugin ...
4
votes
2answers
135 views

How to build QgsExpressions in python?

How can I build a feature request expression using variable inside expression? For example values = [1, 2, 3] for j in range( y ): it = vl.getFeatures( QgsFeatureRequest().setFilterExpression ( ...
1
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0answers
27 views

How would I build the syntax inside a request in the case I wanted to multiply 2 variables?

I would like add something to my previous question (here: How to build QgsExpressions in python?) How would I build the syntax inside this request in the case I wanted field_name to be also a ...
2
votes
0answers
31 views

Spline plugin doesn't work

I have Spline plugin installed. It is activated. When I try to draw a curved line it doesn't change into a curve. The lines remain the way I have drawn them. I am using QIS 2.10.1 with Windows 8 or 7. ...
3
votes
1answer
371 views

Problem with print composer when exporting a map with Google Maps Plugin in the background

Whenever I try to export a map with the Google Maps plugin in the background, it exports but just exports to a blank document. When I turn the Plugin off so it is not in the background, it prints ...
1
vote
2answers
320 views

How can I get features that satisfy a QgsExpression using PyQGIS?

I have two fields say "State" and "name" which would be get from the two comboboxes. After which, based on the current text in the combo box, I want to make QgsExpression and feature that satisfies ...
2
votes
2answers
64 views

Compute raster math in QGIS plugin

I'm writing a QGIS plugin and I need to create a raster layer as the average of other rasters. How can I do it? I have tried to use gdal_calc.py through os.system, something like: cmd = 'gdal_calc.py ...
6
votes
3answers
853 views

Alternative to OpenLayers plugin for QGIS?

Are there any alternatives to OpenLayers plugin to have Google / Bing maps for QGIS projects? I need an high quality cartography (both aerial and street view) but OpenLayer plugin do not allow to ...
1
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0answers
23 views

classFactory error when using QGIS Plugin Reloader

I am developing a QGIS plugin that loads perfectly fine when I open QGIS. I installed the "plugin reloader" plugin to facilitate development. However, when I reload the plugin via the reloader I get ...
2
votes
1answer
445 views

How to find chainage of points using LRS

I have a Shapefile of road that I have converted from a KML file (created on Google Earth) and a txt file containing lat long (from GPS) of points with some attributes. The points are not exactly on ...