DLG-OPT format

Tue Jun 15 12:44:13 EDT 1993

We have a set of DLG files from the USGS of politcal, admin, hypsography,
lakes and streams, for the entire US at 1:2000000 scale.  
They are expressed in Albers meters, in the "optional DLG" format.
Samples are available on our anon-ftp site in pub/avhrr-sample/CPpol.dlg.
Below is the header of one of the files.  

Can grass translate these files into grass vector format?
I tried to import it, and it converted ascii dlg to binary,
then converted bin dlg to grass dig format, but got completely
thrown by the albers meters.  The header of the results of v.out.ascii
is shown below, as well.  Is this the standard problem of only UTM and 
LatLon in Grass?  Hasn't anyone ever heard of GCTP II, the Global Coordinate
Transform Package, a suite of Fortran routines to convert control point
between any two standard projections?  UTM, Polar stereographic, Lambert
Azimuthal, even the Robinson (Natl Geographic) projection are available.
The code is available on my ftp site under pub/GCTP, if any brave souls
want to play around with it.  I may not be able to bell the cat, but I 
will provide the bell and collar to any mouse who cares to try.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Tim Szeliga	 Org:National Weather Service / Hydrologic Remote Sensing
Voice: (612) 725-3259  			NOHRSC BBS:  (612) 725-3230  (8N1)
FTP archive: snow.nohrsc.nws.gov        Internet: tim at snow.nohrsc.nws.gov
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
(Just because I mention a product in a post does not mean it is endorsed by
the United States Government.  You gotta be at least cabinet level before you
can do that.)

Appendix a:  Input DLG-OPT in albers meters

USGS-NMD  DLG DATA - CHARACTER FORMAT - 09-29-82 VERSION                        
CENTRAL PLAINS STATES                    1967, 1972  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       37.000000 -108.000000       -1055100.55  1617406.97                    
NW       43.000000 -108.000000        -970479.10  2283986.45                    
NE       43.000000  -95.000000          81046.72  2223061.79                    
SE       37.000000  -95.000000          88118.08  1551169.70                    
HYPSOGRAPHY            0    18    18 010     2     2 010    15    15   1        
N    1 -1055100.55  1617406.97           0           0     0                    
N    2  -970479.10  2283986.45           0           0     0                    
N    3    81046.72  2223061.79           0           0     0                    
N    4    88118.08  1551169.70           0           0     0                    
N    5  -940143.24  1602604.78           3           0     0                    
    -2    -4     5                                                              
N    6  -886460.58  1749249.88           2           0     0                    
    -1     2                                                                    

Appendix b:  Output of v.out.ascii

ORGANIZATION: USGS-NMD  DLG DATA - CHARACTE
DIGIT DATE:   1967, 1972
DIGIT NAME:   Import from DLG
MAP NAME:     CENTRAL PLAINS STATES                   
MAP DATE:     1967, 1972
MAP SCALE:    2000000
OTHER INFO:                                                       
ZONE:         9999
WEST EDGE:    -1055100.55
EAST EDGE:    88118.08
SOUTH EDGE:   1551169.7
NORTH EDGE:   2283986.45
MAP THRESH:   2000
VERTI:
A  2
 1727996.2    -1132653.83 
 1699536.89   -1136796.12 