Hi Matthew,
try cs2cs instead of proj, e.g.
cs2cs +init=epsg:26915 +to +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0
+lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m [EMAIL PROTECTED] +wktext +no_defs
With proj you have to do the inverse projection from epsg:26915 (your
from projection) to latlon/wgs84 (epsg:4326) first,
proj -I -f "%.8f" +init=epsg:26915
In a second step project the resulting latlon coordinate into your
to-projection:
proj -f "%.4f" +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0
+x_0=0.0 +y_0=0 +k=1.0 +units=m [EMAIL PROTECTED] +wktext +no_defs
Both version should work. Just for comparison, I got the following
result for the first point of your extent:
epsg:26915 : 184056.505, 4809728.25
epsg:4326 : -96.89976708 43.37391004
your to projection: -10786832.7293 5369059.0540
I hope, that this is correct and will help.
Dirk
Hi,
This question is tangential to Mapserver, but critical to me
nonetheless. I'm trying to reproject a shapefile in a mapfile from
=========================================================
PROJECTION
"init=epsg:26915"
END
=========================================================
to
=========================================================
PROJECTION
"+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0
+y_0=0 +k=1.0 +units=m [EMAIL PROTECTED] +wktext +no_defs"
END
=========================================================
my extent in the 'from' projection are:
=========================================================
EXTENT 184056.505 4809728.25 767381.245 5478975.75
=========================================================
Can someone help me figure out what my EXTENT should be in my 'to'
projection? I've tried the following extents derived from the 'proj'
command line outputs as extents, but was not successful:
=========================================================
$ proj -I -f "%.4f" +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0
+lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m [EMAIL PROTECTED]
+wktext +no_defs
184056.505 4809728.25
1.6534 39.6121
767381.245 5478975.75
6.8935 44.0874
$ proj -I -f "%.4f" +init=epsg:26915
184056.505 4809728.25
-96.8998 43.3739
767381.245 5478975.75
-89.3140 49.4047
=========================================================
Anybody have any ideas what I am doing wrong? Do I somehow have to
chain projections together to get from my 'from' projection to my 'to'
projection?
Thanks,
Matt
--
It is from the wellspring of our despair and the places that we are
broken that we come to repair the world.
-- Murray Waas
_______________________________________________
mapserver-users mailing list
mapserver-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapserver-users
_______________________________________________
mapserver-users mailing list
mapserver-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapserver-users
