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Questions tagged [qgis-plugins]

Software plugins that add functionality to the QGIS package

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Custom panel is created but does not display properly in custom plug-in

I am using the answer to Adding custom panel to QGIS to add a custom panel to my existing custom QGIS plug-in. So far, the plug-in only uses modal dialogues. I try to show the widget from the callback ...
Nick's user avatar
  • 123
0 votes
1 answer
42 views

I can't fill in the gaps in the DEM map

I downloaded the DEM files of the Balkan peninsula from the USGS website. I created a Balkan Peninsula DEM map larger than 3 GB from more than 130 DEM files, each of which is 25 MB. However, there is ...
William24's user avatar
0 votes
1 answer
50 views

Capture canvas mouse click in QGIS QDialogue plugin [closed]

I wrote a QGIS plugin that is a GUI, and I'm struggling to capture canvas click events. My goal: Whenever a user clicks on the canvas while my plugin is open, I want to know which maptool they were ...
Carmel Suchard's user avatar
0 votes
0 answers
14 views

Solving Geometry Error in LST Prediction Using QGIS and MOLUSCE Plugin

I’m currently working on a project to predict Land Surface Temperature (LST) for the year 2033 using QGIS and the MOLUSCE plugin. My dataset includes LST raster layers for 2013 and 2023, along with ...
RAKIBUL ISLAM's user avatar
3 votes
0 answers
97 views

Attach functions to QGIS processing algorithms

I am trying to find a way to attach a function to run whenever any processing algorithm either starts, succeeds or fails in the main QGIS application. The functions should be attached when a plugin is ...
Dror Bogin's user avatar
  • 3,545
0 votes
1 answer
40 views

Opening .aprx files in QGIS via SLYR

I'm following this https://mapscaping.com/opening-an-aprx-file-in-qgis/ tutorial on how to open a ArcGIS Pro .aprx-File in QGIS via the SLYR plugin. While it does sound straight-forward, the .aprx-...
Rob's user avatar
  • 302
-1 votes
0 answers
43 views

Best isochrone mapping tool [closed]

I have been exploring isochrone mapping tools to try to figure out what my options are but am inundated by the choices available. Travel time API, open route service QGIS plug in, R's r5r package (...
ahmad farhan's user avatar
0 votes
0 answers
26 views

Putting the file path in a QgsMapLayerComboBox correctly

I'm trying to put the path of a file to a QgsMapLayerComboBox as items, I'm having 2 problems with the code below, the first is that when the user selects the file, it is added to the ...
Mestrexama's user avatar
0 votes
0 answers
30 views

Python error QGIS

I opened my QGIS and showed this message after I tried to download the plugin Smart_Map Não foi possível carregar o módulo SIP. Suporte à Python vai ser desabilitado. Traceback (most recent call last):...
Gabriela's user avatar
1 vote
0 answers
25 views

NetWorkErrorException when running QuickOSM plugin in QGIS

I can't run the QuickOSM plugin in QGIS. I have tried reinstalling the plugin but it doesn't work This is the log from Python error: Traceback (most recent call last): File "C:\Users/LISBETH/...
Lisbeth Adventiana's user avatar
0 votes
0 answers
20 views

Using multiple flow direction to produce watersheds [closed]

I'm looking to use a tool/method to produce a multiple flow direction output with the aim to use this to create watersheds. However, I also need to use a pour point file and I can't seem to find a ...
user247827's user avatar
0 votes
0 answers
29 views

Fixing Semi-Auto Classificaton Plugin

Recently I did analysis with SCP and I notice it can change the system processing ram so I curiously changed that hopefully the program will process data faster. But it was a mistake I guess because ...
Ghulam Husein's user avatar
0 votes
0 answers
34 views

Issue with Google Earth Engine Plugin in QGIS

I am trying to resolve an error from using the Python console on QGIS. I have QGIS version QGIS version 3.34.4-Prizren on my linux Ubuntu 22.04.4 LTS, Codename-Jammy. Then I successfully installed ...
TG_'s user avatar
  • 1
0 votes
0 answers
36 views

Error when using vector layer merge tool in PyQGIS: 'incorrect parameter value for LAYERS

I am attempting to use the QGIS tool to merge vector layers and then load the merged layer temporarily in QGIS after running the following Python code. However, I am encountering an error message. ...
Raíssa Daher's user avatar
0 votes
0 answers
35 views

Python Error on QGIS 3.34.X

I installed QGIS on my computer but it encounter a python error as show below. I am not an expert on GIS. 2024-06-21T15:19:19 WARNING Python error : Couldn't load plugin 'rastertool' due to an ...
Spokesman1's user avatar
0 votes
0 answers
33 views

PyQGIS capture screen around mouse pointer

I'm developing a PyQGIS plugin, that shows different terrain details for the area hovered by the mouse pointer. I'd like to implement a screenshot feature that would allow the user to screenshot the ...
oliver's user avatar
  • 95
0 votes
1 answer
72 views

QgsRasterBandComboBox/ ComboBox unable to process raster calculator

I'm creating a plugin to calculate NDVI and NDWI indices in QGIS v3.36.2. I have successfully created the GUI as below and successfully loaded the layers and bands of the layers. The data I am using ...
ExHunter's user avatar
  • 101
0 votes
0 answers
24 views

plugin_build_tool doesn't find default QGIS Plugin directory

I've had a working setup with QGIS 3.28.11 (OSGeo4W installation) and plugin_build_tool (installed via pip install pb_tool in the OSGeo4W Shell to deploy a QGIS Plugin I'm developing. Updating the ...
Honeybear's user avatar
  • 2,474
0 votes
0 answers
55 views

Openpyxl module not working QGIS 3.34.7 when data is added. Why?

i tried write excel file using openpyxl module. CODE: log = [['ID', 'LAYER NAME', 'ADA', 'ERROR DESC', 'REMARKS'], ['', 'cable_assignment', '', 'Duplicates Values In CableAssignmet'...
Velugoti Venkateswarlu's user avatar
0 votes
0 answers
12 views

How to modify URL of an existing QgsVectorTileLayer and retrieve visible tiles in PyQGIS

I am developing a plugin in PyQGIS that involves creating a QgsVectorTileLayer using a URL in XYZ format, which points to a local vector tiles server (in this case, a PG_tile_serv). Creating the ...
SatoshiGG's user avatar
0 votes
1 answer
23 views

r.fill.dir not responding

I have been working on delineation of the Orange river basin in South Africa. Its now one full week trying to fill the DEM file using r.fill.dir in QGIS but it take decades with no response and the ...
Silas's user avatar
  • 1
0 votes
1 answer
27 views

Empty Metadata table in Semi-Automatic Classification Plugin of QGIS

I am working on Landsat 8 images using QGIS 3.36.2 When I want to convert clipped images to reflectance in Semi-Automatic Classification Plugin, nothing is displayed under the metadata table even ...
chandanr777 's user avatar
0 votes
0 answers
45 views

What does "OTB folder not set" mean?

I installed QGIS version 3.34 Prizren today. There were no problems with the install. As soon as I opened it there is a message in the message log under Processing Tab that reads: 2024-05-30T20:35:11 ...
Georgia Slim's user avatar
0 votes
1 answer
58 views

How do I speed up selection of a large number of features

I'm looking for ways to speed up selection of a large number of features (10k+) from a list of attribute values. I'm developing a plugin to trace a pipe network, and select the tranversed pipes. The ...
timothyh's user avatar
2 votes
2 answers
52 views

QGIS2Web 3 plugin - image does not appear

I have successfully used QGIS2Web 3 plugin to create a webmap, but the attached images are not appearing in the webmap popups. I have a small database of sites, two of which have attached images ...
Hannah Pethen's user avatar
0 votes
0 answers
76 views

How to disable fullscreen mode for pyQGIS/PyQt plugin dialog

With my PyQGIS plugin (built using Plugin Builder 3), whenever I drag the main dialog (built using PyQt) to the top of the screen, it automatically goes into full screen mode and takes up the entire ...
oliver's user avatar
  • 95
0 votes
0 answers
20 views

Zoom level plugin : better UI? Alternate solutions?

Zoom level plugin is very useful when designing maps. I don't know why QGIS does not integrate it. (Or I missed something) I notice that the zoom level displayed is systematicaly overwritten by the ...
francis's user avatar
0 votes
0 answers
17 views

Variable buffer at defined z slope to DEM in QGIS

I am trying to introduce some basic grading tools to my QGIS workflow that would otherwise have to be done in Civil3D by another person. The basic idea is to take a polygon and buffer its vertices at ...
Ivan Heitmann's user avatar
0 votes
0 answers
27 views

V.Net.Salesman Unreachable Nodes at Intersections

I'm designing a network that has a layer of locations and a layer of street segments. I need to design a route to connect these locations along the street segments using the shortest route possible. ...
Michael Dinh's user avatar
0 votes
0 answers
17 views

Plugin "smart-map" for MacOS: no raster file (TIFF) created

The plugin "smart-map" seems to work fine for QGIS version 3.22.12 (and for higher versions as well). No error message arises for processes in tabs "Data", "Grid" and &...
stonebe's user avatar
  • 467
0 votes
0 answers
31 views

Is it possible to use a Python package/module that is not installed in QGIS in a Plugin?

I want to use a Python package, EPANETTOOLS, which is a python package that allows hydraulic simulation from Epanet (INP) files, in a plugin that I am developing for QGIS, but this is not a module ...
Aloísio Ângelo's user avatar
0 votes
1 answer
42 views

Offset line and polyline

I am making a QGIS plugin for shortest path and I want to offset line for that shortest path. I am getting shortest path but not offset line. I've pasted code. Could you go through it and suggest ...
user9246070's user avatar
2 votes
0 answers
57 views

PyQGIS - How to iterate through each point in a raster layer to create a colour map

I'm working on a PyQGIS plugin where I need to iterate through every coordinate in a raster layer to apply a custom rating function. The aim is to create a new raster layer where each pixel is colored ...
oliver's user avatar
  • 95
0 votes
0 answers
50 views

After installing QGIS 3.36.1 -> 3.36.2 Go2streetview window looks black

After installing a new version of QGIS (3.36.2) Go2streetview screen becomes black. I also have an old version. Here (same streetview settings/API) the problems do not occur.
Kay's user avatar
  • 1
0 votes
0 answers
32 views

QGIS enmap-box plugin

I want to use the plugin enMAP-box3. Currently I use QGIS 3.34-6 on my Macbook. The following error keeps occurring when installing the plugin: Couldn't load plugin 'enmapboxplugin' due to an error ...
Sanne's user avatar
  • 1
0 votes
0 answers
152 views

QGIS SMART MAP Plugin error

I am having a problem using the QGIS plugin called SMART MAP. My QGIS version is 3.36-2, and it shows the Python version as 3.12.3. Since I need to use Kriging in QGIS, I installed the SMART MAP ...
user242791's user avatar
2 votes
1 answer
105 views

Running SAGA Next Gen algorithms in QGIS standalone script

Does anybody know how to run SAGA Next Gen algorithms in a standalone script? It was possible in QGIS 3.28 when the SAGA provider was a core plugin. I recently upgraded to 3.36.2 and installed the new ...
jger's user avatar
  • 137
0 votes
0 answers
54 views

Accurate small-scale mile/km markers in QGIS. Qchainage and "Points along geometry" are inaccurate

Looks like Qchainage has been integrated into QGIS as "Points along geometry" and they're basically the same. But they only work in projected units so they'll be inaccurate for any small-...
James Ashton's user avatar
0 votes
1 answer
28 views

Listen to parameter change to update other processing parameters in QGIS

I have a QGIS processing plugin with about 30 parameters. It would be nice to be able to set some or all parameter values from a configuration file(JSON, TOML...). For example: { "vhm_10m"...
sheelal's user avatar
0 votes
1 answer
91 views

Shifting / moving entire layer in QGIS

I'm trying to work on two sets of data : Public roads (official source, purple on the image) Network data (private source, brown on the image) Both layers should overlap (at least, the network data ...
Vincent Monteil's user avatar
2 votes
0 answers
45 views

How to use third party python libraries on QGIS plugins?

I am looking for a way to use third party libraries which uses pyproj in QGIS plugins. I don't want to ask the user to install the library in the system python environment. Instead, I want to use the ...
AMA's user avatar
  • 454
0 votes
1 answer
27 views

Storing password in your Keychain failed: OS X Keychain error (OSStatus -25293)

I am using the MapTiler plugin which requires an authentication key (it is the only entry in my Authentication database in Preferences). Every time I restart QGIS I have to re-enter my password and I ...
seancarmody's user avatar
0 votes
0 answers
32 views

Converting planar local coordinates to ellipsoid coordinates

I am new to GIS and QGIS. I am trying to create a display layer of survey points on a factory floor (planar) so that they represent correctly when overlaid. I want the points to appear overlaid on a ...
Drew's user avatar
  • 1
1 vote
0 answers
46 views

QGis plugin development: method that only runs when processing tool is opened

Is there a way to run code when a processing algorithm is clicked/opened from the QGis toolbox? I'm doing an API requests in initAlgorithm() but this also executes upon QGis startup, when ...
merydian's user avatar
1 vote
0 answers
40 views

Join Layers for PyQGIS

I am using version 3.0 and above. Below is my code where i want to join two layers. I didn't get any error but the Charting Layer doesn't show update on fields. I need to join UPI field of Excel file ...
unknown's user avatar
  • 11
0 votes
0 answers
37 views

Plugin class has no attribute

I'm working on a QGIS plugin and I named my plugin class "ModelGenerator". I've added a QCheckBox (named checkBox) in Qt Designer and I saved it to the .ui file. When calling this checkBox ...
aogino's user avatar
  • 15
0 votes
1 answer
53 views

Seeing how far you can travel by road using QGIS [duplicate]

I have 2 layers, one with roads of an area, and other with shops of the area. What I want to do is to produce a map which could show the roads that are 100m within the shops. Note that what I want is ...
Denis Rusis's user avatar
0 votes
0 answers
49 views

Tool or plugin in QGIS that allows seeing measurements/area of polygon/line while drawing it

I am looking for either a tool or plugin in QGIS that allows me to view measurements and/or area while creating a ploygon/line. I know I can measure it afterwards, but I am specifically looking for a ...
Maja Thuren Jørgensen's user avatar
0 votes
2 answers
48 views

Label anchoring and placement settings (geometry generator label placement by plugin)

I'm trying to set up a plugin applying custom labels for lines created by Geometry Generator. I want the labels to be "on line", something that's easily set manually: Based on documentation ...
svn's user avatar
  • 101
0 votes
1 answer
49 views

QGIS Default Values not set if rows added programmatically with pyqgis

I've set up a .gpkg file with 10 fields, some of which I want to be entered by user and some to be generated automatically when creating a polygon (multipart) feature. For example I've set up a "...
LiMoNiZeR's user avatar

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