[Proj] FW Tools 1.2.2 beginner

Hamish hamish_nospam at yahoo.com
Thu May 10 23:47:01 EDT 2007

> Conor O'Donoghue wrote:
> > 1) I need help with choosing the most appropriate
> > utilitiy (GDAL or Proj for example). My objective
> > is to forward re-project, or warp, tiff's (vector files
> > later). I have no need to use the functionality with
> > another program, so i think the command line should be
> > fine.

> Generally speaking you would use gdalwarp to warp a
> raster image.

> However, before I start I would like to be
> clearer....... Could I run proj.4 from the command
> line directly without GDALwarp and if so, why would I
> need to use GDALwarp?

proj will reproject between coordinate systems (pure numbers).
   (e.g. convert a lat/lon position to UTM coords)

gdalwarp will twist/turn/strech/warp a GeoTIFF image.


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