[postgis-users] DEM models

[Ed Linde]

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
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