I am trying to use the "Build Virtual Raster" tool in QGIS 3 to build a mosaic. When I run the tool, I get the following message:
GDAL command output:
/bin/sh: gdalbuildvrt: command not found
gdalbuildvrt is available in my terminal, but it appears that QGIS does not know where to find it. How do I fix this?
I am running:
- QGIS 3.0.3
- macOS 10.13.4
Answer
This is a know issue, however there is a workaround described in the readme file from the installer:
QGIS 3 does not find external tools needed for Processing. Some configuration options are missing. A workaround is to use QGIS custom variables. Open QGIS Preferences → System.
- Under the Environment section, turn on Use Custom Variables.
- Add (+) a variable
- Select Prepend from the Apply popup
- Enter PATH for the variable
- For the Value enter: /Library/Frameworks/Python.framework/Versions/3.6/bin:/Library/Frameworks/GDAL.framework/Versions/2.2/Programs:
- Quit QGIS 3 and start it again
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