[Gdal-dev] gdalwarp

[Frank Warmerdam]

Norman Barker wrote:
> Hi,
>  
> looking at the warp utility am I correct in thinking that the 
> restriction on 8 bit tiff, and holding all the tiff in memory is now 
> removed.
>  
> GDAL 1.1.8
> 'implemented new 'gdalwarp' application for projection and GCP based image
>    warping.  See gdal/alg for underlying algorithms.  Currently gdalwarp 
> only
>    supports 8 bit images and holds the whole source image in memory.'

Norman,

Yes, I believe the new generalized warper was in place for the 1.1.9 release
and certainly for 1.2.0.

> As I am a bit new to this, and in particular GDAL say I had a geotiff in 
> in UTM WGS84 (EPSG:32630)  how would I convert it to Lat/long WGS84 
> (EPSG:4326) ?

Assuming the input file is properly labelled as UTM you would just do:

   gdalwarp -t_srs EPSG:4326 in.tif out.tif.

Best regards,

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