<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=koi8-r">
<META content="MSHTML 6.00.6000.16481" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Hello, I use cs2cs utility and try to transform a
point (484236, 5006526) using the following command line:</FONT></DIV>
<DIV><FONT face=Arial size=2>+proj=utm +zone=15 +ellps=GRS80 +units=m +to
+proj=aeqd +lat_0=-80 +lon_0=-100 +x_0=0 +y_0=0 +ellps=GRS80 +units=m
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The result is (631024, 6129620).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Then I add flag -I to my command line and try to
transform point (631024, 6129620). The result is (329673,
-2729005).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Please, could you explain this. Thanks.
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>P.S. I suppose that inverse transformation is
rigth (631024, 6129620)->(329673, -2729005).</FONT></DIV></BODY></HTML>