That's great Carlos. I'll try this out with the srtm plus files I have. Michael
On 10/13/07 8:32 AM, "Carlos "Guâno" Grohmann" <[EMAIL PROTECTED]> wrote: >> From an older post > > (from Markus, I guess) > > > Example: > r.in.bin -sb input=e020n40.Bathmetry.srtm output=e020n40_topex > bytes=2 north=40 south=-10 east=60 west=20 r=6000 c=4800 > r.colors e020n40_topex rules=etopo2 > > Enjoy > > > Carlos > > > On 10/13/07, Maciej Sieczka <[EMAIL PROTECTED]> wrote: >> Michael Barton wrote: >>> Ultimately, I'm trying to locate bathymetry off the coast of Europe to >>> create a DEM of Pleistocene Europe during times of low sea level (i.e., >>> -300m). >>> >>> Following the FreeGIS.org link off the GRASS download data page, I found a >>> site with "STRM30 plus" that combine 1km SRTM with bathymetry >>> <ftp://topex.ucsd.edu/pub/srtm30_plus/data>. This seems just what I need. >>> However, I can't figure out the format or how to import it into GRASS. The >>> files show up like " w020n90.Bathmetry.srtm". I've tried r.in.gdal and >>> r.in.strm to no avail. I thought maybe the files were compressed and tried >>> to uncompress them without luck. >>> >>> Can anyone suggest what to do with these files? >> >> Michael, >> >> ftp://topex.ucsd.edu/pub/srtm30_plus/README.V2.0.txt: >> >> <snip> >> DATA FORMATS >> Data are provided as binary integers in exactly the same >> format as SRTM30. The files must be uncompressed with gzip >> and are 16-bit big endian byte order. >> </snip> >> >> Other than they don't seem gzipped actually, the information >> looks correct. These are 16 bit signed integer binary grids. >> >> You can use r.in.bin, or r.in.gdal if you create appropriate >> header files (see r.in.srtm script for inspiration; note it >> cannot work with 30" SRTM data as it is now - currently it >> supports only 3" and 1" SRTM tiles). In the presence of >> properly formatted *.hdr GDAL supports such binary grids >> with "ESRI .hdr Labelled" driver [1]. In >> ftp://topex.ucsd.edu/pub/srtm30_plus/ermapper_headers there >> are ERmapper header files, which I suppose can be used to >> prepare their GDAL-understandable version. >> >> [1] http://www.gdal.org/frmt_various.html#EHdr >> >> Maciek >> >> _______________________________________________ >> grass-dev mailing list >> [EMAIL PROTECTED] >> http://grass.itc.it/mailman/listinfo/grass-dev >> > __________________________________________ Michael Barton, Professor of Anthropology Director of Graduate Studies School of Human Evolution & Social Change Center for Social Dynamics & Complexity Arizona State University phone: 480-965-6213 fax: 480-965-7671 www: http://www.public.asu.edu/~cmbarton _______________________________________________ grassuser mailing list grassuser@grass.itc.it http://grass.itc.it/mailman/listinfo/grassuser