I have no idea how to use GDAL to load in the SDTS .DDF files. Are you saying I have to write C/C++ code to do this or are you suggesting a way I could import this into postgis and get the raw co-ordinates?
On Fri, Sep 7, 2012 at 10:08 AM, Nicolas Ribot <nicolas.ri...@gmail.com>wrote: > Hi, > > GDAL seems to handle the format: > http://www.gdal.org/frmt_various.html#SDTS. > (format specs: http://mcmcweb.er.usgs.gov/sdts/sdtsfaq.html) > > So it could be converted into a postgis raster, or processed directly > with GDAL/OGR. > > Nicolas > > On 7 September 2012 09:53, Ed Linde <edoli...@gmail.com> wrote: > > Hi All, > > I just downloaded a DEM file from geocomm.com, and its in a format that > I do > > not understand, I want to do a Delaunay triangulation on it to generate a > > TIN. > > I was wondering if someone here knows how I can go about getting the raw > > x,y,z co-ordinates so I can go about triangulating this dataset? I know > many > > of > > you might work with DEM and Raster datasets, so I thought I would ask > here. > > Some details below about the dataset that came in the .TXT file with it. > It > > was a ".DEM.SDTS.TAR.GZ" file which I untarred and it created a whole > bunch > > of > > .DDF files. Any idea what I can do with these? > > > > Thanks, > > Ed > > > > ITEM_TYPE: SDTS DEM - 7.5X7.5 GRID > > CELL_NAME: Bearhead Mountain > > STATE: WA > > MRC_CODE: 47121-A7 > > BEST_AVAILABLE: T > > SALEABLE: T > > DATA_LEVEL: 2 > > X_RESOLUTION: 30 > > Y_RESOLUTION: 30 > > XY_UNITS: Meter > > Z_RESOLUTION: 1.000 > > Z_UNITS: Meter > > ORIG_LOAD_DATE: 13-SEP-01 > > CREATE_DATE: 13-SEP-01 > > PUBLICATION_DATE: 17-SEP-01 > > SOURCE_DATE: 1979 > > INSP_REV_DATE: 1997 > > INSP_REV_NAME: Inspection > > HORIZONTAL_DATUM: North American Datum of 1927 > > PROJECTION: Transverse Mercator > > ZONE: 10 > > VERTICAL_DATUM: NGVD 1929 > > DIGITAL_FORMAT_SPEC: DEM SDTS (Part 5: Raster Profile and Extensions > (RPE)) > > STANDARDS_NAME: Standards for Digital Elevation Models 1995 Header with > > Pre-1995 Content > > PROCESS_STEP: DLG/Hypsography LINETRACE, LT4X Complex Linear > > MIN_ELEVATION: 444 > > MAX_ELEVATION: 1859 > > SUSPECT_VOID: 0 > > PERCENT_VOID: 0 > > LARGE_CONTOUR_INT: > > SMALL_CONTOUR_INT: 40 > > CONTOUR_UNITS: Foot > > RMSE: 1 > > SAMPLE_SIZE: 30 > > NORTH_LATITUDE: 47.125000 > > SOUTH_LATITUDE: 47.000000 > > WEST_LONGITUDE: -121.875000 > > EAST_LONGITUDE: -121.750000 > > > > > > > > _______________________________________________ > > postgis-users mailing list > > postgis-users@postgis.refractions.net > > http://postgis.refractions.net/mailman/listinfo/postgis-users > > > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users >
_______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
