Can there be some instances where it is necessary to interpolate DEM when re-projecting (e.g. SRTM from WGS84 to another projection)?
My current understanding of interpolation tells me that one should interpolate a dataset only once (i.e. as SRTM has already been interpolated there is no need to do that again).
I have come across some comments where apparently it has been interpolated (again) when re-projecting. This is just a general question, just want to know if my understanding of interpolation is right or wrong.