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Software plugins that add functionality to the QGIS package

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1answer
7 views

Integrate QGIS Plugin with Java Project

I have a Java Application. I am using QGIS to solve one such module of my Java Application. I have written code in python console within QGIS.Is there any way to integrate both of these? I am ...
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2answers
34 views

Creating a point in QGIS 3.2.2 with coordinates?

I am trying to plot a point using specific co-ordinates in QGIS 3.2.2 and have been told to use 'numerical digitize' or similar to do this. I can't find a plugin that QGIS 3.2.2 will accept. Can ...
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0answers
12 views

QGIS Python Plugin - Prevent Dialog From Closing Immediately after OK Clicked

I've generated a QGIS plugin using the QGIS Plugin Builder v3.0.3. One issue I am encountering with it is - as soon as I click the "OK" button (that invokes the run method) - the dialog closes. Is ...
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1answer
14 views

Installing MOLUSCE plugin on linux? (Error reading metadata: general)

I am trying to install MOLUSCE plugin on ubuntu but every time i try i get an error message saying: The plugin is broken. Python said: Error Reading metadata: general There is a screenshot ...
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0answers
8 views

Qdialog control events not working for own ui design

Created new postgis line layer and after capturing single feature need to show my own form design i.e. Qdialog,instead of default qdialog. used this coding for showing my own ui dsign. QgsVectorLayer....
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0answers
3 views

Raster does not show up after adding in Freehand raster georeferencer

I have a large orthophoto that shows up fine when dragged into QGIS 3.0.1. I am using ESPG 32610, and my basemap layer (also a raster) shows up fine. I wanted to play with the Freehand raster ...
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0answers
18 views

Converting degrees into distance in Distance Matrix using PyQGIS

My question seem repeated, but somehow no question answered my question directly. I have used "Distance Matrix" between two point layers. The return type of distance is in degrees, but I want to ...
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1answer
13 views

Writing Geometery Validity using pyqgis in Qgis 3.0? [on hold]

I am trying to calculate the centroid of Polygons , but before that i am checking with Validity of Geometry. How should i write this using python console in QGIS 3 I have tried below code to check ...
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1answer
21 views

NameError: global name 'QObject' is not defined - When I add a second Toolbar Button and Dialog to a QGIS plugin [on hold]

I have a problem when I add a second Toolbar Button and Dialog to a QGIS plugin, I load my plugin in "Manage an installing plugins..." but this error appears This is a part of my .py What is the ...
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0answers
13 views

Training input error Semi automatic classification pluggin QGIS 3.2.3

Ever since upgrading to QGIS 3.2.3 I have had numerous errors. The latest which I cannot seem to resolve is the following: I am trying to run classifications using the semi-automatic classification ...
3
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2answers
76 views

Removing Intersection of Buffers in Same Layers

I have created a series of buffer regions around line segments in QGIS (in my case a road network): The buffers are in transparent blue with the darker circles being where the buffer segments overlap....
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0answers
32 views

Polygon Centroids working for only some Polygons in PyQGIS?

I have a building Layer(Full of Polygons).I want to get centroids of polygons and save them as point layer.I am using python console within Qgis 3.0. I have tried below code.I got my Centroid Layer(...
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1answer
57 views

Do I need to have QGIS installed on a machine to make use of it's python libraries?

I'm trying to make a simple stand-alone app to expedite the production of some site plan maps for my work. The maps are very formulaic, and follow a set template every time. With the QGIS libraries, I ...
0
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1answer
41 views

Automation of legal description( section - township- Range - Location)

Referring to the snap below, i want to automate the legal decription like W2NE, NENE, NWNE and so on... available inputs are Section, Township and Range info. I am using QGIS 2.8.3. I have so many ...
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0answers
20 views

Creating time-space map by distorting city-points polygons using QGIS?

I've already 3 main layers on shp in qgis: the points of some places, the cities polygons and a grid of 10km, as you can see on the image. I would like to distort the map using time values to modify ...
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2answers
151 views

How often is QuickMapServices updated?

I am using Google Satellite (via QuickMapServices) in QGIS to count settlements in a certain area, and I'm looking to compare this settlement data to satellite imagery from a few years back. Is there ...
1
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1answer
28 views

'pyrcc4' is not recognized as an internal or external command

pyrcc4 is not being recognised as a command. Here is the error: C:\Users\Department\.qgis2\python\plugins\np>pyrcc4 -py2 resources.qrc -o resources.py > 'pyrcc4' is not recognized as an ...
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0answers
22 views

how to change the Geometry of Polyline in QGIS using Python

I have two layers with multiple features, BlackLayer and YellowLayer. As i mentioned in the above image there are one yellow feature on two black features.I would like to change the geometry of yellow ...
5
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1answer
56 views

What happened to the changelog on QGIS 3 plugin info page?

In QGIS 2.X the changelog from the metadata.txt was/is displayed on the plugins info page (and besides, the info whether a plugin is trusted or not): In QGIS 3 I miss both informations: Users are ...
1
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1answer
24 views

Pyqgis Qgis2 override Processing framework settings doesn't work

Inside my Python plugin (qgis2.18) I use some Processing algorithms. I'm trying to override the Processing setting that allows using only the selected features. I' want to set it to False and ...
1
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0answers
26 views

Problem with QGIS and Keras

I'm developing a plugin in QGIS using the Keras' library for deep learning. I have some problems when I load and save the model. The error is the following: File "h5py/h5p.pyx in h5py.h5p....
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0answers
21 views

Combining different bands

I have downloaded Sentinel 2 and Aster images with the SCP in QGIS. When I try to build a raster or create a bandset using different band combinations, the images turn out black. When I look at the ...
1
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1answer
44 views

No module named 'mmqgis'

I have two layers in my Project 1)Points Layers 2) Polygon Layer I need to apply nearest neighbour Analysis between point and Polygon, but i am unable to get . I tried the below code.I am using ...
1
vote
1answer
39 views

Error in executing Voronoi polygon algorithm

I am trying to create Voronoi polygon on point layer of my project. I need to save this new layer as .shp file. The following is the code I have written in Python console, using QGIS 3.0 import ...
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0answers
16 views

How to get the full info of ITN layer (OS MasterMap)

I am dealing with OS mastermap using QGIS to get a .csv file that contains the full ITN layer data in order to build a road network graph. I generated the .csv file, but it was incomplete as no ...
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0answers
32 views

Error messages upon start-up of QGIS 3.2 on a Mac

I am using QGIS 3.2 Bonn on a Mac. When I start QGIS, I get some error messages. QGIS appears to work fine, but the warnings seem serious. The two errors I get are: Couldn't load plugin '...
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1answer
51 views

Adding multiple layer on Map Canvas using pyqgis

I am facing issues on adding Multiple layer in Qgis3.0. I tried below code but its not working. I am unable to detect what wrong since its not giving error. Both Layers are valid, but cant be added ...
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3answers
72 views

Do QGIS plugins require admin rights?

I am trying to set up some GIS teaching with QGIS on a University network. One issue is plugins, some I want to use are internal, like the Georeferencer, others are external contribs, like the Semi-...
1
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1answer
34 views

qgis:JoinAttributeTable is giving a Syntax Error in QGIS 3.0

I am new to QGIS 3.0 and using "qgis:Joinattributetable" for joining .csv and .shp file. Below is my code, but I am getting Syntax Error. AttributeError: module Processing has no attribute '...
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0answers
40 views

Custom QGIS maptool to return current event

This is what I am trying to do. I designed an interface which can switch between selection mode and placement mode. Selection mode activates the selection tool. Placement mode is what I am ...
1
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1answer
48 views

Create virtual lines in QGIS with Python

Due to our requirement, the default "Add Feature" will not work for us. So we decided to create a new GUI which validates and does some calculation before changing a layer. This GUI holds the ...
3
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1answer
76 views

Where can I find the source code of the “QGIS Python Plugins Repository”?

Along the lines of this (unanswered) question, where can I find the source code of the QGIS Python Plugins Repository website - or the source code of the software driving this infrastructure? The ...
3
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0answers
48 views

Create lines to connect vertices in QGIS

I have a file that marks street edges and want to connect "crossing" points automatically. Image 1 shows the street edge, Image 2 shows the desired result. Is there a plugin or method I can use to ...
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0answers
44 views

How to integrate a password-protected WMS layer into an OpenLayers GIS website without entering a separate password?

I'm building a small intranet site to display geodata easily. Using QGIS (2.18) and QGIS2WEB (2.34.0) I prepared geodata and created it as OpenLayers output as index.html. A WMS layer, which is ...
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0answers
9 views

Locating Local Anomalies in NDVI with Vector Overlay

I am attempting to identify potential leaks (exploiting an extended dry spell in the weather) from shallow underground pipes running under fields by flagging areas of anomalously high NDVI values. I ...
1
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1answer
65 views

Plugins repository is unavailable

I'm using QGIS 2.18.20. On MacOS High Sierra 10.13.5 Only recently I haven't been able to find uninstalled plugins. The settings show the repository is "unavailable". I'm not using a proxy. I've ...
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0answers
18 views

How to stick plugin widgets for ever to its own position?

Every time I'm starting Qgis my custom widget disappearing. Is there a way to stick plugin to keep it all the time at the same place in the screen layout ?
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2answers
51 views

Cannot get Not Installed Plugins in QGIS 2.18

I tried looking for Not Installed plugins but they do not show up on QGIS version 2.18. Under Plugin Settings, QGIS official plugin repository is shown as unavailable. When reloading nothing happens. ...
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0answers
31 views

QGIS Semi Automatic Classification SCP Plugin Runtime Error

I am using Landsat 8 satellite imagery for doing Supervised Classification using Semi Automatic Classification Plugin (SCP) in QGIS. I have created ROI's and done all the procedures for doing the ...
1
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1answer
44 views

Any plug-in that allows layer editing in the MirrorMap window?

QGIS 'Dockable MirrorMap' I am using a plugin. This plugin is able to add one or more extra panels in the main window with additional map canvases. The 'Dockable MirrorMap' plug-in simply has the ...
2
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0answers
50 views

QGIS 3 crashes when QgsExtentGroupBox.setOriginalExtent() is called

Below is the relevant code. I am using QgsProjectionSelectionWidget to get the CRS. canvas_extent = self.canvas.extent() transformer = QgsCoordinateTransform( self.canvas.mapSettings(...
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0answers
29 views

QGIS topology check shows different topology check results for same area

I used QGIS topology checker for parcel data of an area in QGIS 2.18. The rule used was- 'Parcel must not have gaps'. The result showed many error (gaps) and while zooming in and zooming out, the ...
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1answer
54 views

Distance Matrix with 2 point shapefiles and one street network

I have two point shapefiles (start/destination) and one sort of street network shapefile. I would like a to create a distance matrix from the start-shapefile to the destination points, using the ...
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0answers
27 views

Detect wfs connection user

I am working with plugin builder. As I can detect the user that belongs to the wfs connection, I just need the username, in order to pass it to the plugin I am developing. The configuration of the ...
1
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1answer
35 views

How to correctly use the filter with empty values in pyQGIS?

In my script, at the moment of having the layers loaded, I filter all the ToC layers with a unique value for all the layers. I use the setSubsetString('"FIELD" = \' VALUE \ '') method, but when it ...
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0answers
35 views

How to use QGIS plugins functionality in standalone application

I'm new to QGIS 3 Library to develop standalone map application in qt4, C++ language. I was wondering if there is any way that I can use QGIS plugins such as Advanced viewshed analysis, Contour plugin ...
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1answer
37 views

Search any .qgs file in Python

In [Actions] How do I refer to any file with the .qgs ending within the county folder? (rather than need to specify a specific file .qgs?)
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1answer
18 views

QGIS 3.2 - How do I join road segments together like they're shown in a Road Map/Atlas?

When I imported any of my Roads Layers ESRI Shapefiles from OS Vector District data into QGIS 3.2 using one of the pre-defined Road Symbol representations, I get a very poor result showing the road as ...
1
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1answer
28 views

Do not save .pgw file

When I capture the screen and save the file it also generates a .pwg file, I do not need it, only the .png self.iface.mapCanvas().saveAsImage("doc.png")
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0answers
21 views

Heatmap Tool in QGIS v3.0 not working

I am trying to use the Heatmap tool in QGIS v3.0 but keep getting the following error: I have tried installing the plugin - but it doesn't appear in the list. I can't find the option under Processing ...