[gdal-dev] gdalwarp to XYZ grid

[Frank Broniewski]

Hi all,

I'm trying to warp a XYZ Grid to another CRS. My GDAL complains while 
running:
gdalwarp -t_srs EPSG:3035 -of XYZ /tmp/tmpU7lQR2/in.xyz 
/tmp/tmpU7lQR2/out.xyz
> Output driver `XYZ' not recognised or does not support
> direct output file creation.

and now I'm out of ideas and that's why:

I'm fiddling with SRTM scenes in order to create (automatically) nice 
looking hillshades. One step in the process is to use mdenoise [1] for 
smoothing the scene. mdenoise eats two file formats, ESRI ASCII Grid and 
XYZ Grid. And they need to be in a projected CRS with meters as unit, 
not in the default WGS84 SRTM "projection". Projecting raster data 
(including the ASCII grid) back and forth into other CRS yield mixed 
results in terms of quality since there are always distortions and anti 
aliasing issues.

So I want to stick to the GRASS people's approach with r.denoise [2]. 
They make a XYZ grid, project that to a projected CRS, denoise and 
reproject to the original CRS. And that's were I am stuck ... since I 
don't want to use GRASS for that work.

Any ideas on how to project a XYZ grid to another CRS?

Frank


[1] http://personalpages.manchester.ac.uk/staff/neil.mitchell/mdenoise/
[2] 
http://trac.osgeo.org/grass/browser/grass-addons/grass6/raster/r.denoise/r.denoise

-- 
Frank BRONIEWSKI

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