[GRASSLIST:7959] Re: r.proj takes a very long time / does not complete

[Paul Kelly]

Hello Maciek

On Wed, 17 Aug 2005, Maciek Sieczka wrote:

> That would be very handy if r.proj could estimate the best output resolution
> as well. I remember there was some discussion about completely replacing
> r.proj warper with gdal warper. Any news?

The way I see it is that they perform two different, complementary 
functions. gdalwarp is useful if you have a whole map/image you want to 
convert to a new projection and not lose any of the data. r.proj is useful 
if you already have a region of interest you're working on in the GIS, and 
want to import only the portion of the larger map/image that covers this
region, at the same resolution and with the same boundaries etc. as your 
existing maps in your location.

Does that make sense?

Paul