Newest Questions
167,422 questions
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Display numeric values from shapefile in QGIS
I am new in QGIS and I am trying to display a set of 87 numerical values in QGIS from a shapefile.
I have tried using the "Graduated" option from the "Properties" section, but then ...
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CRS of Base Maps in QGIS
I've been wondering if the CRS of base maps in QGIS (3.40.5) reprojects to the projects' CRS or the base map's CRS and the project's CRS are like two different layers where we can only work with the ...
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Displaying selection of map with Python
I would like to define an area of a map bounded by overlapping rectangles and half-planes using Python. This can be done with Shapely, but if there is a better free library for this purpose, let me ...
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Allowed maxPixels values keep changing in GEE LST time series
I am making a LST time series in GEE but I keep getting the same error
Error generating chart: Error in map(ID=2015_01_01): Image.reduceRegion: Too many pixels in the region. Found 41698958, but ...
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How to save the output from a QGIS tool to a File Geodatabase feature class?
At 3.40.11, it is possible to save a QGIS tool's output as a File Geodatabase Feature Class by using the Save to File... option, as shown here:
This pops up a window where the name of a new FGDB can ...
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QNEAT3 Iso-Areas tools error
I'm trying to create isochrone maps in QGIS 3.24.3 for Windows using the QNEAT3 plug-in but with no success. The program starts running but stops eventually with the following error message:
File &...
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How are NHD FCode values assigned?
How are NHD FCode values assigned?
I have searched readily available information on USGS NHD pages and the method for determining these values is not given. Were the values handed up from earlier ...
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QGIS Installer not working
I am running QGIS from source code, and I am creating its installer using NSIS, but when I create the setup and try to run it, it shows this error. I searched a lot and used AI models, but nothing ...
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How can I recreate the hyperlink tool from ArcMap in ArcGIS Pro?
My team used to use the hyperlink tool in an ArcMap document to load in layers as required.
We've updated this document to Pro successfully with the exception of replicating this tools functionality. ...
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How to use gdal_translate to turn an RGB+mask TIF to an RGBA COG?
I am trying to use gdal_translate to turn a TIF with RGB + mask channels to a COG with RGBA channels.
Download source data:
wget -O src.tif https://oin-hotosm-temp.s3.us-east-1.amazonaws.com/...
- 3,098
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How to explode GeometryCollection25D features in QGIS after importing from DXF?
I'm working in QGIS (version 3.38.3) and have imported a DXF file that contains various geometries. After import, the resulting layer has features with geometry type GeometryCollection25D along with ...
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OGRCoordinateTransformation.Transform() gives wrong coordinates
I'm trying to do some local to global (EPSG:3042 to EPSG:4326) transformations in a ROS2 c++ script using GDAL.
OGRCoordinateTransformation *Transformation;
OGRSpatialReference poLocal, poGlobal;
...
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Enabling custom QGIS Authentication database
According to the QGIS Authentication Documentation, a custom database, such as PostgreSQL, can be used for the authentication database instead of the default SQLite database.
The documentation states:
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Converting <google-maps> HTML tag object to format readable by QGIS
Is there a way to convert a <google-maps> HTML tag object to a format readable by QGIS?
The <google-maps> HTML tag I have has children of the form:
<map name="gmimap52" id=&...
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107
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How to create a COG using gdal.Warp without turning transparent pixels to black pixels?
I am trying to create a COG from a TIF file from OpenAerialMap. The initial file appears in QGIS nicely: areas which do not have data are transparent. However, when viewing the COG, some of the no ...
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