Questions tagged [pyqt]

PyQt provides bindings for Qt 2 and Qt 3.

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6 votes
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Running function from double click with PyQGIS

How can a double-click in the QGIS canvas be used to run a function in PyQGIS? For example, I want to access the name of each feature I'm selecting with a double-click. Code sample to access the ...
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  • 1,416
3 votes
1 answer
66 views

Get M-value from shapefile by mouse click on canvas

I am new to QGIS plugin scripting (3.16 Hannover) (in Python 3.7). I have lots of different layers in my layers panel and I want to be able to click on a button on my GUI, which then activates a ...
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1 vote
1 answer
23 views

QgsAttributeTableView shows nothing in my QGIS plugin

I have created a plugin using the Plugin Builder plugin, and I tried to adapt it to show a QgsAttributeTable (by following this example). I get absolutely no errors or warnings, but it simply shows an ...
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0 votes
0 answers
38 views

PyQGIS plugin, disable Qt dial at start, from outside __init__ function?

I know I can disable the dial widget from the main function that loads the Qt dialog form with self.dial_name.setEnabled(False) but don't want to modify the function, to keep all modifications ...
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  • 319
1 vote
1 answer
31 views

Placing plugin or action in submenu using PyQGIS or PyQT

I am trying to place a plugin into a submenu of "Vector". In this case "Geoprocessing Tools". When I use: iface.addPluginToVectorMenu('Geoprocessing Tools',action) or: iface....
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  • 435
3 votes
1 answer
46 views

Change Qt dial size in .ui file, PyQGIS plugin

The main dialog in the plugin is entirely defined by an .ui file. No css stylesheet yet, nor processing (except for some values, not to define the controls). I need a 2nd dial but its function is ...
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  • 319
3 votes
1 answer
143 views

Display a progressBar and use the execution time of several functions in QGIS plugin

I developed a plugin under QGIS and I added a progressBar using QT Designer. Using a pushButton, I execute several functions directly in the __init__(self, iface) function. What I want to do is to ...
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  • 133
0 votes
0 answers
69 views

PyQt SpinBox value is always returning value of 0 / SpinBox not recognized

I'm creating a plugin in which I use spinboxes. The value set by the user on the spinboxes is meant to define precision in which the result will be printed. Even though my spinbox has different values ...
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2 votes
2 answers
349 views

Looking for manual on how to properly setup standalone PyQGIS without GUI

My goal is to create a standalone PyQGIS script that is able to run QgsProcessingAlgorithm scripts without GUI. My setup runs on Windows and my IDE of choice is VS Code. I've followed the Windows ...
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  • 425
6 votes
1 answer
45 views

Disabling automatic selection in QgsMapLayerComboBox

I build a plugin. It has a lot of comboboxes (QgsMapLayerComboBox). They are all empty when no project is loaded. When I open a project in QGIS, a layer is automatically shown in all comboboxes. All ...
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1 vote
1 answer
46 views

Collapsing legend in ToC via PyQGIS

I am creating QGIS simple plugin which adds and set styles. It works like a charm, however i want to collapse all legends(categories) from styles in given layer i tried layer....
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  • 53
5 votes
1 answer
228 views

Capturing CTRL+Key In KeyPressEvent in PyQGIS QgsMaptool

I created a Line with help of QgsMapTool and I'm able to capture the single key in keyPressEvent like this: class buildingEditTool(QgsMapToolEdit): def keyPressEvent(self, event): ...
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2 votes
1 answer
215 views

Dynamic parameters in Qt Designer

Started building my first plugin in qgis and looking for a way to create dynamic widget in pyqyt and Qt designer which allow user to add or delete parameters as much as he want (something like a '+' ...
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0 votes
0 answers
167 views

QGIS, anaconda, pyinstaller - RuntimeError: qgis._gui cannot import type '����' from PyQt5.QtCore

We developed a Python application that uses QGIS. Using anaconda and python 3.8 it runs on OSX and Windows when executed as: python UVANDA.py from within the Anaconda environment. We start with a ...
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0 votes
1 answer
148 views

QGIS' pyrcc5 gives error on macos Catalina

When trying to build a QGIS plugin with Plugin Builder 3, I get the message that pyrcc5 was not found in my path. I installed PyQt using brew install pyqt, but still nothing. Instead, I tried to run ...
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0 votes
0 answers
37 views

Rewriting QgsProcessingAlgorithm methods

I'm building Processing Provider plugin. As I understand, clicking on the "Run" button of the plugin leads to launching "run" method of the QgsProcessingAlgorithm. I don't want to ...
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0 votes
0 answers
74 views

PyQGIS Add Point

I create my own QGIS plugin using PyQGIS. In this there should be the possibility to add a point. The code for this is: iface.actionAddFeature().trigger() Now I have a point. No problem. I also ...
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1 vote
1 answer
131 views

Store QGIS map themes (to XML)

I would like to store QGIS Map themes to be used later. In my workflow, I use a plugin which imports many (grouped) layers. Each layer contains several styles that I can switch between. I want to ...
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  • 11
1 vote
1 answer
436 views

PyQT plugin window is always smaller than when run in QGIS

I'm making this plugin and it's big as seen in the screenshot below However, when I open it in QGIS, it's small and it's troublesome to keep adjusting the size.
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  • 1,127
2 votes
1 answer
196 views

Enabling/Disabling layer feature selection in QGIS

I have been looking for a QGIS toggle to disable layers' feature selection like in ArcMap/MapInfo. Found Setting layer as unselectable to avoid identifying features in multiple layers using QGIS but ...
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1 vote
0 answers
173 views

PyQt Push Button randomly stops working in PyQGIS plugin

I keep running into a very weird issue with clicked.connect not working in various plugins I am working on. The error happens randomly in QGIS 3.x versions and it seems to happen on some machines only....
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  • 6,209
2 votes
2 answers
408 views

Opening Plugin with another Plugin

I would like to open a Plugin with the help of another Plugin. Is it possible, if I want to switch the workflow of different plugins one after the other, that when I click the submit button of one ...
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3 votes
1 answer
119 views

QgsVectorLayer creation in Qthread (pyQt)

Our QGIS project is dynamically generated on startup based on user roles. There are nearly 120 QgsVectorLayers that need to be generated. If created sequentially, the login process takes up to 2 ...
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  • 373
1 vote
0 answers
111 views

Taking picture from QGIS Plugin using PyQt [closed]

I have a button in a Plugin to take a photo and relate it with a feature of a layer in QGIS. My aim is to select a feature, open a camera view (viewfinder), take a photo and save it with the feature ...
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4 votes
1 answer
1k views

Error "No module named PyQt5.QtCore" in QGIS standalone application

import os, sys sys.path.append(r'C:\Program Files\QGIS 3.6\apps\qgis\python') sys.path.append(r'C:\Program Files\QGIS 3.6\apps\qgis\bin') sys.path.append(r'C:\Program Files\QGIS 3.6\apps\Python37') ...
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0 votes
1 answer
66 views

QgsNetworkReplyContent.content() empty after HTTP error

I have a custom Flask backend and a QGIS plugin as client. I make a request with the QgsNetworkAccessmanager with blockingPost() to an endpoint which returns a JSON response on either HTTP status. ...
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  • 437
0 votes
1 answer
129 views

How to create custom shortcut to set visibility in QGIS with PyQT?

I have been trying to make custom shortcut to set visibility to given layer. For example, I have two layers I work on LAYER_1 however I use LAYER_2 as reference, but sometimes I need to hide LAYER_2 ...
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  • 53
2 votes
1 answer
551 views

Using PyQt in PyQGIS inside QGIS 3.16

This code Using PyQt5 extracted from http://www.tutorialspoint.com does not work when I add it in a script in the console of QGIS 3.16. Can you enlighten me on this subject? import sys from PyQt5 ...
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6 votes
1 answer
5k views

Making a Feature Form for a standalone PyQGIS application as in QGIS

In QGIS, there is a method named openFeatureForm defined in QgisInterface class. It opens a form that shows value of attributes for a given feature. layer = iface.activeLayer() feature = layer....
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3 votes
1 answer
393 views

Image Adding Problem to QGIS Plugin GUI with Qt Designer

I'm using QGIS 3.1 and I created a plugin. Finally, I want to add a image(.png) to my plugin's GUI with Qt Designer. But when I add it, QGIS gives an error when it opens and my plugin does not work. ...
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  • 33
1 vote
0 answers
91 views

Reloading aprx that has been modified using ArcPy with ArcGIS Pro

I'm writing a python script tool for ArcGIS Pro that uses a custom GUI created with pyqt. I would like the tool to be able to add and remove layers from the main map in the ArcGIS Pro project it is ...
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  • 1,468
3 votes
2 answers
695 views

Converting PyQt5.QtCore.QVariant to string

I am using QGIS with the in-built Python console. I want to replace some values in a shapefile with some other values. But when I try to change the attribute values, I get an error about the data ...
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  • 421
1 vote
0 answers
74 views

Create a plugin to connect PostgreSQL db and run a query using QGIS Plugin

I have prepared a code to connect PostgreSQL database and run a query on the database using PyQGIS and it is running successfully on python console of QGIS. I want the same to happen using QGIS Python ...
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1 vote
0 answers
30 views

Is it possible to open below code on PyQt Designer? [closed]

I want to add some design via PyQt Designer to below GUI: class Ui_MainWindow ( object ) : def setupUi (self, MainWindow) : MainWindow.setObjectName ( "MainWindow" ) ...
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  • 19
1 vote
1 answer
289 views

Is there a way to refresh the browser on QGIS programatically with PyQGIS?

I have tried the QgsBrowserModel but it doesn't seem to work. I am not even sure if that is the right class to use. The problem is that I add WMS and database connections through a plugin but they won'...
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  • 43
0 votes
0 answers
697 views

How to Open QFileDialog In QGIS 3 plugin?

i tried to open file dialog with Qgis Plugin its through argument 1 has unexpected type Error here My code # -*- coding: utf-8 -*- """ /**************************************************...
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0 votes
1 answer
96 views

Use plugin code in QGIS python script

I would like to write a Python script in QGIS and would like to use functions from a plugin. For example, QuickOSM plugin has an import function and an "Open" button, that creates a ...
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2 votes
0 answers
76 views

What's the role Qwidget and Qlayout in the QGIS interface?

I use miniconda3 to manage my software installations, including QGIS, so I can use packages like geopandas easily in the QGIS python console. Lately however, when I open qgis from the command line ...
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2 votes
1 answer
371 views

How can I launch a QWidget after pressing a submenu (QAction) in QGis3.4?

I need your help I am developing a dialog box (which I will call toolraster) in QGis to interact with raster layers. I want it to display when I click on a menu I insert in the QGis interface. I ...
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  • 1,344
0 votes
1 answer
128 views

Creating QGIS Shapefile in PyCharm leaving some attributes NULL

I've created the shapefile and can manually enter in all the attributes to come in fine, but when I call it any other way (which I will need to do), the values for the floating types appear as NULL, ...
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  • 131
1 vote
0 answers
118 views

Display maps from QGIS in my GUI created using PyQt5 [closed]

I wish to create a GUI using PyQt5 for an application that displays a map created using QGIS. How do I integrate QGIS and PyQt so that the map I wish to display can be shown in my app?
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3 votes
1 answer
215 views

Problem: QGIS-Plugin that involves setting a shortcut, does not work when run a 2nd time

I am trying to build a Qgis plugin which involves setting shortcuts to perform some function on the selected layer in the plugin. When I use my plugin for the first time, everything works as expected. ...
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3 votes
0 answers
2k views

Problem with font size depending on screen resolution - QT

I developed a QGIS plugin by designing the interface with QT Designer. The inferface appears correctly on my computer (left image). However, on some computers, I encounter size problems, especially ...
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1 vote
0 answers
130 views

Problem compiling ui to python for a QGIS 3 plugin

I've created a .ui using QT Designer for a QGIS 3.10 plugin called 'bhlayers' which has a docking widget to the right. When I used the: pb_tool deploy command it didn't seem to translate the .ui to ...
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  • 445
0 votes
0 answers
450 views

Update QDialog live without freezing UI

So I am currently working on a QGIS Python plugin and I want to update a QDialog with textoutput while an import of data from one file the another is running. So while it is grabbing data from one ...
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  • 21
1 vote
0 answers
107 views

Connect QgsMapTool to PyQt Application

I am trying to initialise my DrawPolygonMapTool within my application once the DrawPolygonButton is enabled. When the relevant button is pushed, it does run the __init__ function in my ...
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4 votes
1 answer
1k views

Connecting Qt GUI to python code in QGIS Plugin

I am completely new to PyQGIS/PyQt and am having lots of trouble getting started. I have managed to create my base dialog box like so: The (automatically generated) code for the dialog is: import os ...
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1 vote
1 answer
183 views

QGIS Plugin with DockWidget and MainWindow

For my QGIS Plugin, that I started with the QGIS Plugin Builder, I built a QDockWidget and populated it with some functions. Now I want to add a QMainWindow, since I need more space for further ...
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  • 457
1 vote
1 answer
7k views

return the text entered in a QTableWidget

I am creating a plugin in Qgis and I need to enter values to a QTableWidget through the interface, but I cannot find a function that returns them to me. I do not do it with a LineEdit because I need ...
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4 votes
2 answers
11k views

QComboBox multiple selection - PyQT5

I'm making the gui for my QGIS3 plugin using PyQT5 and QT designer. I have a very long list of items in a QComboBox and I need the user to be able to select one or more items. I know that QComboBox ...
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