A case where this might come up is when for example resampling 10m Sentinel
to the 20m bands, although in such a scenario i usually would go from 20m to
10m. I did a quick comparison for the 'average' resample case, and compared
it to 'averaging' using Numpy:
/def resize(a, shape):
yin, xin = a.shape
yout, xout = shape
sh = yout, yin//yout, xout, xin//xout
return a.reshape(sh).mean(axis=(-1, 1))/
Since distance is calculated in map coordinates, the effect depends on the
used coordinate system.
With GDAL 2.1.0, released 2016/04/25:
<http://osgeo-org.1560.x6.nabble.com/file/n5293296/gdal_avg_sf.png>
<http://osgeo-org.1560.x6.nabble.com/file/n5293296/numpy_avg_sf.png>
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