[mapserver-users] Diffrence in Proj4 and MapX values

[aa_pranav at yahoo.com]

hi
I have been trying to project lat/long values to robinson projection using Proj4 library
But the result given by pro4 library is diffrent from those when evaluated by MapX

For eg.
In Proj4: Input lat/long (78.410700,23.271500) 
Output in Robinson projection is (7233791.379929,2488879.797312) unit is meters


For the same input in MapX lat/long (78.410700,23.271500) 
Output in Robinson projection is 7231619.5648,2488958.638

Thus is is appox a diffrence of 2172 meters in x
and 79 meters in y

Their is never a accurate match for Pro4 projected value and MapX projected value.
Can anybody help me to resolve it

Regads
Pranav
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