I'm trying to downsample a raster then upsample it again.
I am using the gdalwarp function in QGIS.
When downsampling the raster looks OK in the front end, I set the cell size to 10x the original raster.
When upsampling back to the original cell size using the downsampled raster the original data seems to be preserved and I end up back at the original raster. What I'm expecting to happen is that I see blocks of 10x10 cells all with the same value (same as the downsampled raster).
Does QGIS preserve the original cell values?
Is there a way to perform this operation?