[Proj] datum shifting - cs2cs build or config problem?
cheynm at yahoo.com
Mon Jan 28 22:08:03 EST 2008
I'm trying to test my proj configuration.
There is an example in the FAQ
cs2cs +proj=latlong +datum=NAD27 +to +proj=latlong
117d0'2.901"W 30d0'0.407"N 0.000
But when I try it, the following is produced:
117dW 30dN 0.000
That is, the output is identical to the input.
I am using binaries I built myself on Windows from the
If I try the 4.4.6 binaries that are available from
http://proj.maptools.org/ I get even worse results:
* * 0.000
another symptom is what happens when I try to use
nad2nad. For example:
nad2nad -i 83 -i hpgn=WI -o 83
hp datum file: WI, failed: No such file or directory
program abnormally terminated
I'm pretty out of my element when it comes to building
the source - merely trying to follow instructions. To
do it, I used Visual Studio 2003 and the commandline
'nmake /f makefile.vc all' on the source located at
c:\proj\src, and I have c:\proj\nad containing the
*.lla grid shift files, and I also have $PROJ_LIB set
to c:\proj. When the build runs, all the binary grid
shift files get created, a good sign.
Sorry if this is old hat, but I'm not having good luck
trying to search the email list archive...
A homebrew for an explanation. ;-) Thanks, Mark
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