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Questions tagged [qgis-plugins]

Software plugins that add functionality to the QGIS package

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12 views

Can't login to QGIS Cloud plugin - QGIS 3.8 OSX 10.13

I have a QGIS cloud account (free) and login via the web-page, so I think my access is fine. But when I try to login via the QGISCloud plug-in via QGIS Desktop on my MacBook, I get Python Errors. My ...
1
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2answers
981 views

Calculating drive time in QGIS

I have more than 3000 points that spread in in a very big area. I need to find all the points (blue) that are in distance of 50 minute drive time, from the stores (green stars). I want to calculate it ...
5
votes
1answer
42 views

QGIS plugin development and libraries

I would like to develop a new plugin for QGIS. I'm new to python but good knowledge in other languages. I use "plugin builder" to create the bases of my plugin. Then i would like to add specifics ...
3
votes
1answer
872 views

Changing the icon picture on a custom toolbar button

I've made a few customised plugins using Plugin Builder and QT. They're all up and running, but I'm having some trouble changing the icon picture on the buttons that I've added to the toolbars to run ...
3
votes
2answers
94 views

Listing of vector layers

I am in the process of writing my two first QGIS plugins. (https://github.com/sickel/qgisSpectre and https://github.com/sickel/qgisstripchart) both of them contains two drop down boxes, one to select ...
2
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0answers
28 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 ...
3
votes
1answer
1k views

Changing pixel values of raster data from QGIS python plugin

I have been trying my hand at a QGIS plugin. The plug in reads raster layer data into an array, pipes the data to a C++ program, does processing over there, and pipes my results back. After a couple ...
2
votes
1answer
62 views

QgsMapCanvas layers disappear on canvas panning/zooming

I am trying to write a plugin that will show an image based on its footprint in the vector layer. Currently, I have a problem with QgsMapCanvas. Layer in QgsMapCanvas disappear when I pan/zoom canvas. ...
2
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1answer
41 views

Recommended icon properties for QGIS plugin?

Starting with PyQGIS documentation - Developing Python Plugins: icon - a file name or a relative path (relative to the base folder of the plugin’s compressed package) of a web friendly image (PNG, ...
0
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1answer
33 views

Error message using sDNA Prepare Network

I'm preparing a road network using the sDNA Prepare Network tool on QGIS 2.18.28. My OS is Windows 10 64 bit. I get the following error message: Algorithm Prepare Network starting... ****************...
1
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1answer
26 views

QGIS ordered set from layer.getFeatures()

I need a list of all values of a certain field in a QGIS dataset. To get this, I am using for festure in layer.getFeatures(): value=feature[fieldname] This is kind of working, but I have two ...
2
votes
1answer
29 views

Changing location of plugin folder in QGIS 3?

I want to change the default location of the plugin folder in QGIS 3. The reason is that the default location is read-only, but I want to create and use self-made plugins. Can I change the location ...
1
vote
1answer
36 views

Split polygon with selected line from another layer in QGIS

I am trying to split a selected polygon ("regions") with a selected line from another layer ("streets") in QGIS 3.8.3. In the example below, I want to split the selected polygon coloured in yellow ...
1
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2answers
47 views

Speeding up pan-sharpening with OTB plugin for QGIS (orfeo-toolbox)

I use QGIS 3.6.1 with the plugin orfeo-toolbox to create a pan-sharped Landsat 8 image. I use the BundleToPerfectSensor function because calling the Pansharpening function results to the error: Inputs ...
1
vote
1answer
53 views

Get the whole path and name of selected layer from QcomboBox in QGIS plugin

I am creating a temporary plugin for QGIS using the QGIS plugin builder plugin. Aim is to learn how to make plugins in QGIS. I have added two comboBoxes that allows the user to select a vector layer ...
0
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0answers
30 views

QGIS standalone application execution problem in Eclipse [on hold]

from qgis.core import * from qgis.gui import * from qgis.utils import * from PyQt4.QtCore import * from PyQt4.QtGui import * app = QgsApplication([], True) app.setPrefixPath("/usr", True) app....
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0answers
12 views

Export classifier from SCP Plugin for use in other image classification

I have run a classification using the SCP plugin in QGIS. I want to recreate these results in a neighboring area and I am looking for help to see if it is possible to save the classification ...
0
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0answers
8 views

Size of cost raster in Least Cost Path plugin [duplicate]

When I run the Least Cost Path plugin in QGIS, its success is dependant upon the dimensions of the 'cost raster'. If the original DEM or subsequent 'cost raster' it too large then the operation seems ...
1
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1answer
39 views

Reference to raster list

I am writing my first Python plugin. There was a problem during work. The plugin is designed to select a raster and calculate the statistics for the area bounded by the vector. I have created a list ...
1
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0answers
20 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 ...
3
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2answers
68 views

Customize QGIS interface

I'm writing here to ask some questions for a thesis project. My ideas are confused, but I'll try to be clear. I have a GIS project that represents some historical goods in a region. Each good has ...
0
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1answer
149 views

Loading *.mrr files in QGIS or using GDAL

Does anyone know how to load the new proprietary MRR files using QGIS or GDAL? I tried using Add Vector Layer but QGIS did not recognize this file.
4
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2answers
124 views

How to exaggerate the elevation in QGIS 3.6?

I´m using QGIS 3.6 to create a Thematic Map with a basemap (STRM). So, to do that, I downloaded the STRM file (*.TIF) in this site: https://earthexplorer.usgs.gov/ File Name: s11_e040_1arc_v3 ...
1
vote
1answer
65 views

QGIS plugin mouseClickEvent

I am writing a plugin which shows a graph in a qGraphicsView based on some selected points. I want to be able to read out points clicking in the graph, so I've written a mosePressEvent eventhandler ...
2
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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 ...
1
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1answer
149 views

How to Create Gradient map from GRID file in QGIS-3 Above?

I have a very important Question. I have a GRD file which can be opened in SURFER or QGIS or GIS. The problem is that how can I customize and make my grid file perfect? Here I have two photos which ...
1
vote
1answer
189 views

Advanced Digitizing Panel(CADInput) import to plugin(custom toolbar)

How to add a CADInput(Advanced Digitizing Panel) to plugin to click when we want to show us a Advanced Digitizing Panel(because I'm trying to make my own toolbar), is any chance to do this?
1
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0answers
27 views

Installing plugin from URL in XML doesn't move files in plugin folder

When I try to install a plugin using a repo I created the downloaded zip file doesn't place the files within the plugins folder correctly. They are placed outside the folder. For example QGIS is ...
1
vote
1answer
146 views

QGIS Semi Automatic Plugin Error

I am trying to do a supervised classification on QGIS. After inputting the bands and checking necessary check boxes, I ran the plugin. it generated an error saying "An error has occurred while ...
1
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1answer
29 views

Create QGIS Plugin UI with QGIS Designer - style like original tools

I developed a QGIS Plugin with QGIS Designer but my UI does not look as nice as original QGIS Tools and I was wondering if its possible to make them as good looking. Specifically, I don't manage to ...
0
votes
1answer
62 views

QGIS — Extract Values from KDE raster to orginal point data layer

After performing a heatmap on QGIS of my cheetah location dataset, I would like to extract values from my kernel density estimate (KDE) raster data layer to my orignal point data layer used to create ...
1
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1answer
256 views

How do you launch QGIS (Mac) without any plugins enabled?

On a Mac, how can you launch Qgis without any plugins enabled?
1
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2answers
495 views

“Relief” function from the Raster Terrain Analysis plugin in QGIS 3.0

I am using QGIS 3.0, where I can't find the Raster Terrain Analysis plugin. I am under the impression that the plugin was embedded into the QGIS 3.0 version, as under "Raster --> Analysis" there ...
4
votes
1answer
279 views

Showing only selected features from a a layer in the QgsComposerLegend?

I have developed a custom qgis plugin. I have a button to export the map canvas in the form of image along with the legend. I came up with the following code for the legend: legend = ...
1
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0answers
20 views

Converting Model in Plug-in in QGIS

Recently, I started making a model on QGIS and now I want to transform it into a plug-in, but it seems that I have to change the code to do it, otherwise it won't work. I already have the plug-in, I ...
8
votes
2answers
2k views

Loading Multiple CSV Files into QGIS 2.10

How can I load multiple CSV files into QGIS with Longitude/Latitude already included in it. I downloaded the "Load Them All" plug-in, however, the result loaded was converted as text files and cannot ...
1
vote
1answer
36 views

QGIS Map to Autocad (not SVG,PDF OR Image)

Is there any way to export the map extent set with Altas points in QGIS to convert to DWG instead of whole project or any shapefile?
0
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1answer
33 views

MMQGIS Plugin dropdown/icon not appear (QGIS 3.4)

I am on the latest LTR for QGIS (3.4) and have installed the MMQGIS plugin. In the older version of QGIS (2.18) this caused a dropdown menu to appear on the top menu bar. However, there is no dropdown ...
2
votes
1answer
88 views

Error downloading a plugin

I have created my own repository for QGIS. If I now install my plugin from this repository, I get the following error message: Plugin has disappeared: The plugin seems to have been installed but I ...
1
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0answers
30 views

Drawing/putting pushpin in QGIS map layer for specific lat/long or NGR?

How do I draw/put a pushpin in QGIS map layer for a specific lat/long or NGR? In MapInfo it is quite easy but just wanted to learn how to do the same in QGIS. I have version 3.8.3.
10
votes
2answers
6k views

Programmatically load composer from template and generate atlas using PyQGIS

I am trying to build a plugin to load a print composer from file, generate an atlas and export to image. So far I have been successful in loading the template and exporting it to image. I have been ...
1
vote
1answer
63 views

QGIS enabling R via plugin

System Ubuntu 19.10, QGIS 3.4 I am trying to utilise R in QGIS for Ripley's K function. The sample R script 'Scatterplot' works with the Processing R Provider plugin, which indicates r-base is ...
2
votes
0answers
32 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 = '...
4
votes
1answer
507 views

Enabling QGIS Official Plugin Repository in the 3.4.1 Version?

I am using QGIS version 3.4.1. Recently, I cannot install new plugins. I have looked in the plugin setting. It seems that the link is blocked. The address is "https://plugins.qgis.org/plugins/plugins....
1
vote
2answers
382 views

How to run Python script in QGIS via plugin

I am an absolute beginner in QGIS no idea in this field. I just created a Python plugin with pluging builder in QGIS successfully PYTHON_PLUGINS_PATH/ MyPlugin/ ----------------- inside it contain ...
1
vote
1answer
42 views

Reading source code of QGIS tool?

I can see the source code of the core QGIS plugins from the repository in github. I want to use the code snippets of "information about object" tool of QGIS. I tried searching in program files but I'm ...
2
votes
0answers
57 views

I can't install any plugins on QGIS

I just installed QGIS 3.4 on my computer (macOS Sierra 10.12.6) and I'm trying to install QuickMapServices, but I'm unable to. My plugins window looks like this: and the settings tab says "The ...
1
vote
2answers
39 views

Where is Statist plugin in QGIS?

I am trying to install the Statist plugin to QGIS and I don't find it when I search within my plugins dialog. (see image) I'm running QGIS 2.18 on Ubuntu 18.04. I have the official QGIS plugin ...
3
votes
1answer
49 views

Unusable QGIS layer from PostGIS

I am developing a QGIS plugin. I need to load some polygons from a table in PostGIS. This table is defined with this SQL query : CREATE TABLE cad.polygon( id_polygon serial NOT NULL, geometry ...
0
votes
0answers
31 views

Installing qgis2web in QGIS 3.8

I recently went to install qgis2web on QGIS3.8 Zanzibar and got the same message, irrespective of checking and installing the QtWebKit5. I would like to be able to use the plugin in some training I ...