Hi -
I've just made some changes to m.proj2 which I think will make it a lot
more useful as a frontend to cs2cs from within GRASS.
* data output is now sent to stdout (when appropriate). This means you
can easily use it in a script. (all other messages go to stderr)
e.g. ANSWER=`echo "$LON $LAT" | m.proj2 inproj="..." outproj="..."`
* added -i flag to use WGS84 as input and current location as output
projection.
* added -o flag to use current location as input and WGS84 as output
projection.
e.g. ANSWER=`echo "$LON $LAT" | m.proj2 -i`
Using the current projection info allows m.proj2 to use +towgs84=, params
etc., which got stuck in the parser before.
I still don't fully understand all the projection library stuff, so if
someone could please check...? The WebCVS does a lot better than
'diff -u' for the changes:
http://freegis.org/cgi-bin/viewcvs.cgi/grass/src/misc/m.proj2/main.c.diff?r1=1.8&r2=1.10
Interactive mode and LL->LL datum shifts still need a bit of work by
someone.
enjoy,
Hamish