SDTS file conversion

[Skip]

Hi Eric,

  >>  I have no problem converting SDTS format USGS dem and dlg data
  >>  under linux.  I don't use the sdts2dem program, though. I use 
  >>  sdts2arc, and import that data into grass via r.in.ascii.
  >>  Details on how this may be accomplished can be found at:
  >>  http://www.baylor.edu/~grass/faq/importing_usgs_7_5min.html

I did read this doc thoroughly knowing full well that one period out of place could cause problems. Nevertheless, the sdts utilis would not compile.

  >>  This page includes the patches required for proper operation 
  >>  on case-sensitive filesystems, and a sample Makefile for the
  >>  sdtsutils package.

  >>  Now that I take a closer look at your compile line, it looks 
  >>  like you're using that makefile, and have a typo in the rule.
  >>  The line should read:
  >>  	gcc -o $@ $@.c -Wl,/usr/local/lib/libfips123.a
  >>  Note the space between the $@'s.

There is no space between the $@'s. Here's my makefile:

all: demout sdts2dem sdts2sur sdtsgrid sdts2arc sdts2rcz sdts2xyz
 
%: %.c
        gcc -o $@$@.c -Wl,/usr/local/lib/libfips123.a  

Is this what you used? Any thoughts?


  >>  Try changing that, and letting me know how it goes.

  >>  Skip wrote:
  >>  > 
  >>  > I am having some difficulty converting sdts files to a format GRASS can
  >>   use. I about every document/e-mail//help file I can find on converting
  >>   sdts files but have run into a few snags. So far the only workable
  >>   solution I have found is converting the files using sdts2dxf.exe within
  >>   winNT. I tried using sdsts2dlg.exe in combination with dlgbld.exe and
  >>   dosmsf.exe but dlgbld bombs. Sdts2dlg seems to work fine. I could stick
  >>   with using sdts2dxf but I've run into problems with importing some
  >>   converted files into GRASS. Oh, I also tried Microdem in winNT but it
  >>   also bombs.
  >>  > 
  >>  > I'd really like to be able to convert the files within linux. I had
  >>   hoped to get the DEM data conversion working properly but I can't get the
  >>   sdts utils to compile. I read the document discussing how to import USGS
  >>   7.5min DEM data into GRASS. I downloaded the proper files and followed
  >>   the procedures for compiling the files. The fips library files compile
  >>   without a problem; however, when I try to compilie the sdts utilities I
  >>   get the following error message:
  >>  > 
  >>  > gcc -o demoutdemout.c -Wl,/usr/local/lib/libfips123.a
  >>  > /usr/lib/crt1.o(.text+0x18): undefined reference to `main'
  >>  > collect2: ld returned 1 exit status
  >>  > make: *** [demout] Error 1
  >>  > 
  >>  > Is there a trick to getting these utilities to compile? What other
  >>   options are available in linux  to convert sdts files into a format GRASS
  >>   can use?
  >>  > 
  >>  > This seems to be an ongoing problem with very limited documentation on
  >>   the GRASS website.
  >>  > 
  >>  > Skip
  >>  > 
  >>  > =================================
  >>  > Skip Haak
  >>  > Natural Resource Solutions
  >>  > 950 Lloyd Center, Suite 48
  >>  > Portland, OR 97232
  >>  > Office: (503) 460-3198
  >>  > Mobile: (503) 998-3267
  >>  > Facsimile: (503) 460-3230
  >>  > E-mail: shaak at teleport.com

  >>  -- 
  >>  +=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+
  >>  | Eric B. Mitchell         mailto:emitchell at altaira.com |
  >>  | tel: (301) 809 - 3534    Altair Aerospace Corporation |
  >>  | tel: (800) 7 - ALTAIR    4201 Northview Dr. Suite 410 |
  >>  | fax: (301) 805 - 8122    Bowie, MD  20716             |
  >>  +=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+
  >>                ,___
  >>            /"\  / o=\  /"""---===/
  >>           /   \_/  \__/   ---===/ 
  >>           |    //\   || /""TT""/ //\   || ||""\
  >>           |   //  \  ||    ||   //  \  || ||__/
  >>           |  //--==\ |L--/ ||  //--==\ || || "=,
  >>            \      ---===/
  >>             \____---===/






=================================
Skip Haak
Natural Resource Solutions
950 Lloyd Center, Suite 48
Portland, OR 97232
Office: (503) 460-3198
Mobile: (503) 998-3267
Facsimile: (503) 460-3230
E-mail: shaak at teleport.com