USGS dlg 2 grass
Jim Squadrito
squadrij at ocean.oce.uri.EDU
Tue Oct 4 23:35:20 EDT 1994
Hello,
I am trying to display USGS DLG-3 optional format vector data
that I transfered vi ftp. v.in.dlg creates a vector data set which
appears correct (the coastlines of the noertheast US) but the
region it is displayed in is UTM 9999?!? The 2mil users guide
tells me the projection is an Albers Equal Area and the header
contains some projection parameters which help in transforming
back to L/L.
I ran v.import then v.out.ascii to check the data...zone 9999.
Does v.in.dlg require lat/lon? How do I make the transformation?
Thanks,
Jim
Univ of Rhode Island-Ocean Engineering
ascii dlg file header:
ORGANIZATION: USGS-NMD DLG DATA - CHARACTE
GRASS 4.0 > pg coastlines.ascii
USGS-NMD DLG DATA - CHARACTER FORMAT - 09-29-82 VERSION
NORTHEASTERN STATES 1967, 1980 2000000.
3 3 9999 2 0.50800000000D+02 4 0 4 1
0.637820640000000D+07 0.676865799729109D-02 0.290300000000000D+08
0.450300000000000D+08 -0.960000000000000D+08 0.230000000000000D+08
0.0 0.0 0.0
0.0 0.0 0.0
0.0 0.0 0.0
0.10000000000D+01 0.0 0.0 0.0
SW 42.000000 -81.000000 1228955.12 2208053.79
NW 47.000000 -81.000000 1141414.46 2757881.26
NE 47.000000 -67.000000 2181637.18 3003087.12
SE 42.000000 -67.000000 2348883.10 2472048.12
WATER BODIES 0 2174 2174 010 686 686 010 2176 2176 1
N 1 1228955.12 2208053.79 0 0 0
N 2 1141414.46 2757881.26 0 0 0
N 3 2181637.18 3003087.12 0 0 0
N 4 2348883.10 2472048.12 0 0 0
N 5 1971090.48 2314725.53 2 0 0
-2074 2075
N 6 1974453.82 2312856.54 2 0 0
2073 -2075
ascii output from v.out.acii:
DIGIT DATE: 1967, 1980
DIGIT NAME: Import from DLG
MAP NAME: NORTHEASTERN STATES
MAP DATE: 1967, 1980
MAP SCALE: 2000000
OTHER INFO:
ZONE: 9999
WEST EDGE: 1141414.46
EAST EDGE: 2348883.1
SOUTH EDGE: 2208053.79
NORTH EDGE: 3003087.12
MAP THRESH: 1524
VERTI:
A 10
2542742.04 1816714.48
2542259.25 1816880.48
2541948.1 1817110.4
2541601.98 1817191.99
2541165.81 1817555.76
end
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