[gdal-dev] General geotiff question

[Fernando Cacciola]

Hi,

I have a general question (and I don't know where else to ask, sorry if this is 
off-topic)

Can I assume that in practice the transformations from PCS to raster space are 
lineal?

That is, cropping a TIFF given 4 lat/lon corners amount to *simply* mapping the 
corners to (x,y) pairs?

IIUC this is not neccesarily true in terms of the GEOTIFF spec, but how is it in 
practice?

TIA

Fernando Cacciola