<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META content="MSHTML 5.00.2920.0" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>hi</FONT></DIV>
<DIV><FONT face=Arial size=2>I have been trying to project lat/long values to
robinson projection using Proj4 library</FONT></DIV>
<DIV><FONT face=Arial size=2>But the result given by pro4 library is diffrent
from those when evaluated by MapX</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>For eg.</FONT></DIV>
<DIV><FONT face=Arial size=2>In Proj4: Input </FONT><FONT face=Arial
size=2>lat/long (78.410700,23.271500) </FONT></DIV>
<DIV><FONT face=Arial size=2>Output in Robinson projection is
(7233791.379929,2488879.797312) unit is meters</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>For the same input in MapX <FONT face=Arial
size=2>lat/long (78.410700,23.271500) </FONT></FONT></DIV>
<DIV><FONT face=Arial size=2>Output in Robinson projection is
7231619.5648,2488958.638</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Thus is is appox a diffrence of 2172 meters in
x</FONT></DIV>
<DIV><FONT face=Arial size=2>and 79 meters in y</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Their is never a accurate match for Pro4 projected
value and MapX projected value.</FONT></DIV>
<DIV><FONT face=Arial size=2>Can anybody help me to resolve it</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Regads</FONT></DIV>
<DIV><FONT face=Arial size=2>Pranav</FONT></DIV></BODY></HTML>