This question already has an answer here:
I have what seems like a simple question, but I haven't been able to find the answer in the QGIS documentation.
I have a raster that is 250 m resolution, and I want to resample it to 1000 m resolution. This means that for every 16 pixels in my original raster, I will have 1 pixel in my new raster. I would like to retain the mode (most frequent value) of the 16 pixels.
Based on the suggestion from Radim here, I am using this approach:
Load raster into QGIS
Right click on layer name, select 'Save as'
However, I haven't been able to figure out what technique is used to go from 16 cells (at my original resolution) to 1 cell (at my new resolution). Based on inspecting some specific pixels, it doesn't appear to be either the mean or the mode.
(Note: I would like to use the mode, so if anyone has a better technique, I am all ears)