I am trying to find the sum of all pixels in a raster, as shown below:
How do I do this using QGIS?
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Sign up to join this community"Raster layer statistics" in the processing toolbox:
You can also save resulting stats into HTML file
I do recommend you use R and RStudio to do this. You can install the package raster and do that in a really easy way. Just read the documentation about that.