I have some multi-spectral data, where the individual bands are separate Raster files.
How do I layer stack these rasters so that I get one raster with 3 bands instead of 3 different rasters?
This is quite easy to do in ERDAS and ArcGIS, but I haven't figured out how to do it in QGIS
Answer
I had the same issue some months ago.
Use gdal_merge to generate a new file from the 3 independent rasters.
In OSGeo4W command line you can do this:
gdal_merge.bat -separate -of GTiff -o output.tif input1.tif input2.tif input3.tif
In QGIS you can do the same with a GUI in the raster plugin "merge" tool.
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