[mapserver-users] PROJECTIONS WGS84 TMERC

[Jaime Mejía]

The map's projection is tmerc

 >Hello list,
 >I've got a map in plain coordinates, datum:bogota
 >(International Ellipsoid 1924, origin: 74d4.8550002'w, 4d35.9428332'n)
 >And I've got GPS's points in WGS84.
 >I want to display the GPS's points over the map with datum Bogota.
 >My problem is that points seems to be 500mts displaced aprox.
 >What sould I be doing wrong?
 >----------------
 >My map definition:
 >----------------
 >UNITS METERS
 >PROJECTION
 >  "proj=tmerc"
 >  "a=6378388"
 >  "rf=297"
 >#  "ellps=WGS84"
 >  "k=0.9996"
 >  "x_0=1000000"
 >  "y_0=1000000"
 >  "lon_0=74d4.8550002'w"
 >  "lat_0=4d35.9428332'n"
 >  "no_defs"
 >END
 >----------------
 >My GPS Layer definition:
 >----------------
 >PROJECTION
 >    "proj=longlat"
 >    "ellps=WGS84"
 >#        "units=dd"
 >END
 >
 >Thanks in advance,
 >
 >--
 >Cordial Saludo,
 >
 >MAIN TASK
 >
 >Jaime Mejía Molina
 >www.main-task.com
 >Teléfono 3690760
 >Móvil 2441490
 >CL 28 # 35-67 of 204
 >Bogotá D. C.