Questions tagged [qgis-plugins]

Software plugins that add functionality to the QGIS package

536 questions with no upvoted or accepted answers
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243 views

QGIS 2.10 Can't load georeference plugin?

Apparently my problem was already present in older versions of Qgis. I don't know how to fix it, knowing I have a Linux system (Fedora 23). Somethiing similar here : Where to download QGIS 2.10? So, ...
3
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0answers
197 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 ...
3
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0answers
653 views

QGIS-Python Need to check if layer is in current extent and make it active

I'm putting together a plugin for QGIS. The user inputs a county and a coordinate pair. The plugin then adds in the county data and zooms to the given coordinates. The problem is that there are ...
3
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0answers
356 views

How to refresh or update a vrt layer in Qgis?

When using the QGIS SpreadSheet Layers plugin, how do I update the SQLite query without closing and reopening QGIS? I cannot see a "watch file" equivalent. The plugin creates and uses a *.vrt file ...
3
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0answers
309 views

Quantumnik plugin replacement?

I am looking for export QGIS Style in MapNik (so, his .xml format) I see that Quantumnik plugin can do that, but is not supported anymore (and cannot be installed at all) . Is there any alternative ...
3
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0answers
266 views

Displaying symbology outside map canvas window extent?

Say we have equally distributed x,y mesh vector file. Each coordinate has a map-unit based diameter circle symbology. If we zoom into a region of the map canvas far enough, some centroids exist ...
3
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0answers
333 views

How to move feature using python console in qgis

i am building a qgis plugin that can create as much copies of a selected feature as i want and paste it to my required place.I have code to copy and paste feature select = iface.activeLayer()....
3
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0answers
183 views

IS it possible to run GRASS commands in the QGIS graphical modeler?

I have a geoalgorithm set up in the graphical modeler and everything runs except for the GRASS commands. It is really frustrating because when I execute these commands on their own they work just fine ...
3
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0answers
295 views

How can I change the NoData value in QGIS 2.x using the python console

I'm trying to add a NoData value to a single band raster image in QGIS 2.0 using the python console but can't find the right bit of code to do it. Here's what I see on the console: >>> ...
3
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0answers
769 views

Create a path following a road, interpolating from a set of points

I have several hundred vehicular routes within a city from which I wish to create shapefiles. These take the form of directions such as "From Green Street, turn left into Brown Street, Right into ...
3
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0answers
791 views

Install shapely for QGIS on Mac

I know there are a number of similar questions, but none of them have answers that allow me to use shapely in QGIS. In particular I am trying to install the Contour plugin, but this fails with the ...
3
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0answers
342 views

How to install statist plugin in QGIS / OS X

I am stuck with installing a plugin for QGIS namend "Statist". I get the following message when starting QGIS: "Missing matplotlib Python module". So basically this question relates to all plugins ...
3
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0answers
2k views

Changing feature's geometry?

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

gdal_merge.py not found

I'm newbie with Linux and QGIS. I'm using Ubuntu 18.04 LTS and QGIS 3.0 Girona and I can't do mosaic from a raster pile because the following log error message returns: Processing algorithm… ...
3
votes
1answer
126 views

How to find obsolete plugin?

I just installed a brand new copy of QGIS 1.8 Lisboa and all of the associated software on a Windows Vista PC using the Windows Osgeo4W QGIS installer, and I get this message: "The Plugin Installer ...
2
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0answers
52 views

QGIS Plugin reload is incomplete

I am developing a QGIS Plugin in PyCharm. I use the QGIS Plugin "Plugin reloader" to reload the plugin when I want to test the plugin. But changes in the code are not applied on running the plugin ...
2
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0answers
16 views

Shortest path analysis has unattainable vertices in result from PyQGIS

You can try this code directly in the console. It basically finds the shortest path but I only have unattainable vertices in the result. Do you know how I can correct this? My layer consists of ...
2
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0answers
29 views

Distributing PyQGIS Plugin Locally with External Modules

I'm developing plugin with QGIS (3.4)'s in built python3 and plugin builder, I've also installed external python modules like opencv, PIL. The plugin will be used and stay in the company only. Can ...
2
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0answers
28 views

Search yields no results in plugins menu

I can't manage to figure out why I can't download any plugins. I have an Internet connection, but it seems like QGIS can't access the online repository of plugins. As an example, I'd like to download ...
2
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0answers
34 views

Feature selection

I have several data points for which, whenever I activate the select feature button and complete the marking out of the points I need, the mark outs vanish. In other words, the points are not selected ...
2
votes
1answer
212 views

Deep Learning in QGIS: installing Tensorflow

I am trying to install tensorflow (with or without GPU support) with the keras API in the QGIS 3.4 LTR python 3 environment but without success. I do have a working install of tensorflow-gpu that I ...
2
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0answers
41 views

Qgis2web mouse cursor changing symbology

Hovering mouse cursor over polygon on QGIS created webpage changing symbology. I´m have exported webpage from QGIS, thru qgis2web plugin. On settings I have checked "Highlight on hover". When I move ...
2
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0answers
30 views

Error: QGIS VectorFieldCalc plug-in “Raster_Parameters_Errors: More than one raster band in raster”

I have used VectorFieldCalc plug-in in QGIS several times before, to make maps of marine currents from .nc satellite data. Recently, I have tried to redo some of the maps and when I try to calculate ...
2
votes
1answer
46 views

How to call for Matrix Parameter / Enum Parameter using Field Calculator in the graphical modeler of QGis?

I am using QGis Graphical Modeler v.3 It is possible to define, as an Input, a Matrix, defined as follows: "A table (matrix) parameter for processing algorithms". I want to use values stored within a ...
2
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0answers
40 views

addParameter to raster in Python QGIS plugin

I create a plugin for processing two rasters. I want to set two input layers and one output layer. class CombineRaster: """QGIS Plugin Implementation.""" Input = 'Input raster' Input2 = '...
2
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0answers
34 views

IDE PyCharm settings for developing a QGIS plugin

How do i setup pycharm to recognize QGIS modules? IDE: PyCharm OS: Ubuntu 18.04 QGIS: 3.8 example of imports this answer is very close to the solution but I cannot add the interpreter location I'...
2
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0answers
24 views

Importing hdbscan in QGIS plugin?

I am building a QGIS plugin and would like to add hdbscan in methods. But when I import with OSGEO4W shell it failed at this line: File "C:\OSGeo4W\apps\Python37\lib\site-packages\hdbscan-0.8.22-...
2
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0answers
24 views

QGIS Layer List upgrade to V3 C++ plugin

I was upgrading a c++ plugin that I had used in the past and almost eliminated all the the usual changes according to the most current version (3.6). The plugin used to collect current map canvas ...
2
votes
0answers
44 views

Calculating line length to both sites in QGIS

Is there a function or a plugin for QGIS that works like this? I have a line, for example, 7 km I click on that line at any point A popup or something gives me the distance to the left an to the ...
2
votes
0answers
18 views

Real Centroids plugin QGis 3.4.4 Inavlid Geometry?

The plugin gives on a specific feature the following error message: "Invalid or empty geometries found". Is the following topology not supported?
2
votes
0answers
30 views

Making a delimited text file for my data in QGIS?

I am using QGIS 2.8 and I want to make a mesh file for dam break simulation. I am following a tutorial of BASEmesh for it. BASEmesh is QGIS plugin. My data is in form of dam dimensions, geometry and ...
2
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0answers
26 views

How to run a Python plugin on QGIS startup

I am new to QGIS and Python plugin development. Is there any way to execute a Python plugin when QGIS starts up? I read startup.py file can be used. What method should I try?
2
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0answers
24 views

Query of line direction histogram plugin

I was wondering if anyone could explain how this plugin works I have had a play around with it and I do like how it visualizes how vectors are orientated. However I ran one and opened the CSV file ...
2
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0answers
61 views

How to capture the event whenever the items inside a listview are checked

I'm developing a plugin in QGIS 2.8.2 using Pyqt 4. Well the idea is using the processing 'qgis:extractbylocation' from the QGIS algorithm provider to capture the studied area # Récupérer tous les ...
2
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0answers
30 views

QgsFileDownloader: download fails every time when run in a plugin

I'm developing a QGIS plugin that has the functionality to download raster files from a server. As the final step, the user has to name the file and select a file path on their system. After that, a ...
2
votes
1answer
73 views

Create tabs for the QGIS plugin interface using Qt Creator

Is it possible to create tabs for QGIS plugin using Qt Creator? (Something like the image I attached) I am trying to group the functionalities I developed for QGIS plugin and I think using multiple ...
2
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0answers
60 views

QGIS Network Analysis Control and Plugins

I am trying to create Isocrones in QGIS for network analysis. I am able to accomplish this using the plugin ORS Tools from my transit stop using a drive time of 5-, 10-, and 15-minutes. However, the ...
2
votes
0answers
36 views

How to automate locally QGIS plugin building steps using exe or script?

I have made a plugin name Area Calc on my local computer. The plugin work very well. I have followed this. I don't want to release plugin. Is there any way to automate the whole above task through a ...
2
votes
0answers
40 views

Join 3D points into a 3D line in QGIS (with Qgis2threejs plugin)

I have a series of several points in a csv, with each row being a different point, with information for various attributes, including the x and y coordinates, stored across the columns. I've been able ...
2
votes
1answer
24 views

Is there a QGIS plug-in to locate where two lines of defined length meet?

On a site we recorded various pits by measuring the two distances to two known physical objects (e.g. 20 metres to pit from physical object A, and 10 metres to pit from physical object B). I am now ...
2
votes
0answers
111 views

QGIS Python plugin crashes when using processing algorithms and QThread

I'm developing a QGIS plugin which calls several processing algorithms. I call them in a pipeline where the input layer of each algo is the output of the previous one. The pipeline is called on each ...
2
votes
0answers
57 views

Testing for vector joins in PyQGIS 3

I'm writing a plugin in PyQGIS 3, and I've to test for vector joins before run a code, so I've found here about vectorJoin() and write this: def joinTables(self): d, f = self.lyrPair() # d = {...
2
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0answers
69 views

QGIS plugin “Load raster to PostGIS”

I tried to find QGIS plugin "Load raster to PostGIS" but I could not find anything in Plugins section in QGIS. Is there any external resource where is possible download this plugin and after that ...
2
votes
0answers
43 views

How to add Audio into QGIS recorded and geotagged using OSMand app

Is there a plugin or easy way of adding audio recordings, recorded and tagged using OSMand app, into QGIS. I'm using a PC and have no coding knowledge! I was able to load the photographs using the "...
2
votes
0answers
151 views

automatically georeference QgsGeometry.fromPoint features on creation

Is there a way to automatically georeference fromPoint features upon creation? I use this layer URI: self.pinLayer = QgsVectorLayer( "Point?crs=epsg:3857&field=id:integer&...
2
votes
0answers
27 views

QGIS turn right click — “Toggle Editing” off

In QGIS3, Interface customization I have turned off the mEditMenu but when a user right clicks on a dateset they still see "Toggle Editing". Is it possible to remove this? and also any keyboard ...
2
votes
1answer
400 views

Wrong or missing parameter QgsProcessingParameterFile QGIS 3.4 Python plugin

I'm making a script that can be called by the processing.execAlgorithmDialog function. For one of the parameters, I want to use the QgsProcessingParameterFile class for selecting a .csv file. I tried ...
2
votes
0answers
251 views

Does the Clipper plugin for QGIS work with Shapefile layers?

I created 2 overlapped polygons in one Shapefile layer, run the intersection tool with another layer and then run the Clipper plugin. This causes the error: TypeError: MultiPolygon geometry cannot be ...
2
votes
0answers
29 views

Copying Table of Contents from QGIS into Excel?

Is there a way to copy and paste the contents of the Table of Contents in QGIS into an Excel spreadsheet? For example, I have many layers (groups of vector shapefiles which are underneath various '...
2
votes
0answers
39 views

Generation of documentation for QGIS plugin

I've written rather much docstrings etc. in my QGIS plugin, mostly in order to keep track of the functions for myself, but it would be nice to have some more documentation, like a sphinx page. I ...