Questions tagged [qgis]

QGIS is a cross-platform GIS application licensed under the GNU General Public License.

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QGIS FS3 plugin user guide

At 3.24.3 I have just installed the FS3 plugin for the first time. Unfortunately, I have not found any documentation on how to use it. My searches have included the plugin's home page, as well as an ...
0 votes
2 answers
25 views

How to get the Python code that analysis tools are running in the background? (In order to create a script for common sequences)

I know I can open the Python console to type in code, and before I know I've been able to open something in QGIS to see the code running when I do something like intersection vector analysis, though I'...
0 votes
0 answers
19 views

GIS layers created using FME 2021 not visible in QGIS

QGIS 3.24 SQL Server 2015 I have GIS layers in SQL Server created using ogr2ogr and FME2021 All the layers are created using my machine. In my QGIS Desktop I can see all layers irrespective of how ...
1 vote
1 answer
137 views

Load Data from Azure Blob

I want to load data from Azure Blob Storage. However I get the error saying Invalid Data Source: /vsiaz/{containerURL}/{ObjectKey} is not a valid or recognized data source. containerURL is the URL of ...
2 votes
0 answers
19 views

Save output as CSV QGIS 3

I am trying to save the result of a distance matrix on two layers in CSV (or in shapefile could be okay as well) You will find the code used for the distance matrix on below: sLayerName = "...
-2 votes
0 answers
18 views

Failing to clip a line to a polygon (river to Catchment area) [closed]

Could not create layer D:/Educational/Anslow/Rur_river.shp: Creation of data source failed (OGR error: D:/Educational/Anslow/Rur_river.shp is not a directory.) Execution failed after 0.28 seconds
1 vote
1 answer
35 views

How do I get a correct scalebar on multiple maps in a single map layout in QGIS?

I am making a map with two main maps and a single inset map for context. My scalebar appears to be showing the correct scale for the inset map, but when I add a scalebar to one of the main maps it is ...
4 votes
4 answers
213 views

Creating line layer from point layer with start and end attributes in QGIS

I have a CSV file that contains attributes for a start node and end node of a pipe in a single record. This is data collected in the field, so the inspector captures the lat/long at each end of the ...
2 votes
0 answers
18 views

Match feature diagrams with temporal fuction in QGIS

I am trying to create a time-dependent visualisation using a heatmap-styled points layer and a points layer with values to show at specific locations. The heatmap one shows occurrences over the ...
1 vote
0 answers
31 views

Taking vertices and using point to path creates a mess, how can I snap the lines to roads?

I’ve tried points to path (and various other processing tools) however I end up with this: When really it should look more like this line string (without the gaps separating chunks of road here and ...
0 votes
0 answers
21 views

Improving WMS screen rendering in QGIS

I'm working with QGIS 3.22.7-Białowieża and I've added a WMS layer in my project. But the rendering quality in the canvas screen is not as good as I'd like it to be, esp. in the labels: see the ...
3 votes
1 answer
48 views

Showing editor by default in QGIS Python Console

I use startup.py file in folder %AppData%\QGIS\QGIS3 to open the Python Console at QGIS start. Is there a way to also show the editor? I browsed a lot of pages in the API, but didn't find the answer. ...
3 votes
1 answer
71 views

Blocky SRTM hillshade in QGIS

I have downloaded some SRTM topography data, which I've re-projected to a projected coordinate system and displayed as a hillshade. As seen in the attached screenshot, the product looks blocky, with ...
0 votes
0 answers
20 views

Could not load new QGIS

I am new to QGIS. I'm trying to update my current QGIS but the new one would not open.
4 votes
1 answer
37 views

Feature without geometry in Geopackage layer

I am working on a QGIS project where I have a layer called "Developments" within a Geopackage document. The layer is a polygon layer where I add all renewable energy projects within my ...
1 vote
1 answer
770 views

Loading GeoDataFrame as QGIS vector layer without exporting to shapefile

I'm using Python console in QGIS to manipulate geospatial data using GeoPandas. I want to load the output (GeoDataFrame) to the canvas as vector layer directly without exporting it to a file first. Is ...
1 vote
1 answer
32 views

Filter shapefiles - keeping inside parts only

I'm quite new to GIS so sorry if this is a daft question - is it possible to filter out non-overlapping parts of a shapefile? I have a boundary shapefile which I would like to cover with small areas ...
1 vote
0 answers
22 views

Flux maps (?) in QGIS

How this kind of map that I think is called "Flux map" can be performed in QGIS? I'd like to implement it in a time model of wind streams.
9 votes
3 answers
1k views

Alternatives to Zonal Statistics which include partial pixels (QGIS)

The task I want to complete is essentially exactly what the Zonal Statistics plugin for QGIS aims to achieve: gives statistics about the values of a raster layer in areas defined by polygons. However,...
2 votes
2 answers
81 views

I can't find the Georeferencer

I'm using QGIS 3.26 and I can't find the Georeferencer. I've basically looked everywhere. It should be in the raster section, but it isn't there. I checked all of my plugins if there was anything, but ...
1 vote
1 answer
94 views

How can I turn editable a shapefile that has been previously saved filtered?

After describing this issue in Qgis: Shape layer turns non-editable if saved filtered (where the answer basically was "if you filter, don't edit"), it has happened again (filtering and editing ...
1 vote
0 answers
78 views

Loading Batch Parameters in QGIS [closed]

I usually work my batches in Excel and then copy/paste it into ArcGIS batch UI. Is it possible to do the same in QGIS? I want to be able to automatically fill the batch inputs with the information in ...
5 votes
2 answers
133 views

Flipping polygon around arbitrary axis in QGIS

I want to flip a vector polygon about an arbitrary axis. What I would like to do is select the polygon to flip, pick two points (A & B in image below) identifying the axis about which the flip ...
2 votes
1 answer
79 views

Calculating minimum distance between points in QGIS

I hope to calculate the distance between each property in the Washington DC metropolitan area and the nearest metro station, and I am doing this for each month from 2000 to 2017. I use Distance Matrix ...
0 votes
0 answers
67 views

Cleaning up GPS coordinates with Google imagery [closed]

I have a set of noisy GPS coordinates that I would like to clean up using Google Earth/Street View. Examples are shown below. Basically, I would like to be able to click and drag my existing ...
2 votes
1 answer
124 views

Generate node / vertex at starting point of line connections

I have line and point layer. I connected line layer with points using connect nodes to line in processing toolbox. After creating a connection line (green color), I used line intersection from ...
0 votes
0 answers
27 views

Create reference number based on direction of line

I'm looking to label a series of lines based on a direction of the trail rather than any cardinal direction (east to west, north to south, etc.) in QGIS 3.4 for Windows 11. For example, let's say I ...
2 votes
1 answer
34 views

Point vs Multipoint and table join using QGIS

I have to point some pottery on QGIS. The thing is that each pot has a key number but it may be found in more that one broken pieces (example: P234 has 4 pieces). Should I add them on my floorplan ...
1 vote
1 answer
61 views

Importing gdal in QGIS and PyCharm not working

Trying to import gdal from osgeo and I'm getting this error; ImportError: DLL load failed while importing _gdal: The specified module could not be found. On Windows, with Python >= 3.8, DLLs are ...
0 votes
1 answer
107 views

QGIS atlas Picture INPUT APP

I am trying to set up a layout with the atlas-function in QGIS. I am using also the INPUT-mobile App. With the app it is possible to take pictures. I want these pictures to be displayed using the ...
1 vote
1 answer
3k views

Saving WMS getFeatureInfo points to layer

I have imported a vector layer from a WMS server into QGIS. I am able to query the objects on this layer with the Identify tool and get (most of the time) information about that object. I have another ...
1 vote
1 answer
83 views

Identifying Europe's major road exits using QGIS

Dataset from EuroGeographic and Global Roads Open Access Data Set (gROADS) have been downloaded. The goal is to identify the exits (geocoordinate points) of highways and primary roads (gROADS refers ...
2 votes
2 answers
27 views

QGIS field calculator get value of spefici cell

How can I access the values of specific cells in my attribute table in QGIS in the Fieldcalculator? For a calculation I need two values of the column "height" with a certain ID and not ...
0 votes
0 answers
32 views

Using QGIS processing algorithms in C++

There are no instructions for using QGIS processing algorithms in the C ++ programming language but it exists in the Python language. Is it possible to use QGIS processing algorithms in C ++?
4 votes
1 answer
199 views

Importing multiple raster files into one GeoPackage

I'm looking for an alternative to import multiple raster files into a GeoPackage other than dragging and dropping via QGIS Browser (sometimes takes to long or returns error). Following this post I'm ...
-3 votes
0 answers
14 views

Delineate watershed in qswat+ and qgis [closed]

I am unable to understand what values to enter in the thresholds. Please guide how to get streams and watershed basins.
1 vote
1 answer
193 views

Problem with protocol Microsoft Azure Blob in QGIS

I'm trying to upload an image in TIFF format into QGIS using Azure Blob protocol with the name of the BLOB and the storage account key but I have this error: Layer Invalid: provider GDAL You can not ...
1 vote
1 answer
42 views

QGIS 3.22.7 - Trouble converting vector to raster (ERROR 1: Wrong value for -ts parameter)

I am learning QGIS, and I have a series of polygons that I need to turn into a raster. The shapefile I am working with can be downloaded here (shapefile size is 3 KB). I am using the Rasterize tool, ...
1 vote
0 answers
28 views

Distance matrix not giving nearest point in QGIS [closed]

I'm having a bit of trouble with my procedures in QGIS Desktop 3.22.6. I bring in a shapefile for the entire US block groups into QGIS. I then bring in points of stores across the U.S. I then use the ...
5 votes
1 answer
666 views

gdal_rasterize failure with QGIS version 3.6.3

I have both QGIS 3.6.3 and 3.0.1 running on Windows 10 64bit. In 3.6.3 I am unable to rasterise a point layer, while the same operation seems to work in 3.0.1. I'm having to switch between versions ...
2 votes
0 answers
130 views

Projecting lines onto surface in QGIS? [closed]

I am designing a water distribution system for a rural village in Guatemala. I have created contours for the area. I need to lay out the pipe routes and need to know how to get the elevation of the ...
-2 votes
0 answers
66 views

How to know current mosaic bands?

I work with sets of images from sensors such as: DJI P4 Multispectral DJI P4 PRO MicaSense RedEdge-MX MicaSense RedEdge-P Then, I extract plant attributes from the mosaics. For this, I need to know ...
3 votes
2 answers
617 views

Exporting raster with transparency from QGIS

As a follow on from my earlier question on reprojecting raster images - is there a way to export a reprojected PNG file (with transparency) from QGIS, with an associated world file? I can now ...
0 votes
0 answers
20 views

Changing properties of existing layers no longer possible in latest QGIS

Latest QGIS 3.26 when a layer is highlighted and then select- Layer, Layer properties, it will only select the last layer to be created and it is impossible to change the appearance of any other layer ...
2 votes
1 answer
111 views

Bad positions of items in saved template

I work with QGIS 3.8 I saved project with print layout which looks good even if I open it again. Also I saved template of it - but when I create a new layout and open that saved template - it is all ...
0 votes
0 answers
16 views

Calling name of layer in QGIS modeler [duplicate]

I want to know how to call the name of the layer in the QGIS modeler, but I cannot find a way to do this. For exemple my layer input in 'test' is called Lake, I wanted to be able to create an output ...
3 votes
1 answer
54 views

Removing black lines in between shapes in QGIS

In QGIS 3.22.7 I have a large dataset consisting of small square geometries (for reproducibility, a sample of this data can be downloaded from here; the total file size is 9 KB for all of them). When ...
10 votes
3 answers
10k views

Removing visual polygon borders in QGIS

I have a GML layer representing a hexagonal grid that I would like to include in some maps. In QGIS 2.14.2 I applied a graduated style and completely removed the polygon border: However, in the map ...
4 votes
1 answer
251 views

Using GRASS and v.split with QGIS

I have been working with QGIS for a few years now and am just now having issues with the GRASS module. Ultimately, I am just trying to split a line (river) into 100m segments, and have found the ...
4 votes
1 answer
72 views

Auto-increment associated with field type in QGIS

I am hoping to build a field in one of my QField forms that auto-increments a number associated with a particular value from a different field. ie. if field "Sampler" has value "AA"...

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