[Qgis-user] proj4 definition for European Forest Map

Agustin Lobo alobolistas at gmail.com
Mon Jun 21 02:47:44 PDT 2010


Hi!

The European Forest Map has the following projection:

Projection: Lambert_Azimuthal_Equal_Area
Parameters:
 False_Easting: 0.000000
 False_Northing: 0.000000
 Central_Meridian: 9.000000
 Latitude_Of_Origin: 48.000000
Linear Unit: Meter (1.000000)
Coordinate system
Geographic Coordinate System:
Name: GCS_User_Defined
Angular Unit: Degree (0.017453292519943299)
Prime Meridian: Greenwich (0.000000000000000000)
Datum: D_User_Defined
 Spheroid: User_Defined_Spheroid
  Semimajor Axis: 6378388.000000000000000000
  Semiminor Axis: 6378388.000000000000000000
  Inverse Flattening: 0.000000000000000000

I've made several trials to set up a custom projection:
1.
+proj=laea +lat_0=48 +lon_0=9 +x_0=0.000 +y_0=0.000 +a=6378388.0000
+b=6378388.000 +rf=0.000 +units=m +no_defs
Rejected by the custom projection tool as erroneous

2.
+proj=laea +lat_0=48 +lon_0=9 +x_0=0.000 +y_0=0.000 +a=6378388.0000
+b=6378388.000 +f=0.000 +units=m +no_defs
Accepted by the custom projection tool but the Properties dialog does
not accept it

3.
+proj=laea +lat_0=48 +lon_0=9 +x_0=0.000 +y_0=0.000 +a=6378388.0000
+b=6378388.000 +units=m +no_defs
Seems to work fine.

I'd like if someone could actually confirm that the third proj4
definition is actually
in accordance with the definition provided in the server and that I
have reproduced at the beginning of this
message.

Thanks!

Agus



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