<html>
<head>
</head>
<body style="margin-left: 4px; font-variant: normal; line-height: normal; margin-right: 4px; font-size: 10pt; font-family: Dialog; margin-top: 4px; font-weight: normal; font-style: normal; margin-bottom: 1px">
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">Hi Hamish (funny to hear from you here!), Hi Frank, </font> </p>
<br>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">Thanks a lot for your help.</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">I'm sorry, I'm a neophyte with proj in particular, and geodesic in general,</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">and unfortunately, something is still bothering me...</font> </p>
<br>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">Actually, I need to convert my coordinates into utm60 and I was trying to use cs2cs. </font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">(cs2cs +proj=nzmg +to +proj=utm +south +zone=60)</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">It was not working so I went step by step, using proj to have a look what was going on...</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">I thought that the usual datums where associated to each projection as standard parameters...</font> </p>
<br>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">Well, now that I understand that you actually need to specify your datum if you want the datum shift to be performed, </font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">I still have a problem :</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> </font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">> cs2cs +proj=nzmg +datum=nzgd49 +lat_0=-41.0 +lon_0=173.0 +x_0=2510000 +y_0=6023150 +a=6378388 +rf=297 +no_defs +nadgrids=nzgd2kgrid0005.gsb +to_meter=1.0 +to +proj=utm +zone=60 +south +datum=wgs84</font> </p>
<br>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> Using to definition: proj=utm zone=60 south datum=wgs84</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> Rel. 4.7.1, 23 September 2009</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> <cs2cs>: </font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> projection initialization failure</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> cause: unknown elliptical parameter name</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> program abnormally terminated</font> </p>
<br>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">The same command with output in latlon +datum=wgs84, gives the same error...</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> Using to definition: proj=longlat datum=wgs84 </font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> Rel. 4.7.1, 23 September 2009</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> <cs2cs>: </font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> projection initialization failure</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> cause: unknown elliptical parameter name</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2"> program abnormally terminated</font> </p>
<br> <br>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">Thanks for any help.</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">Claire</font> </p>
<br> <br>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">PS : Hamish, I know that NZMG is not the best choice, specially offshore, but it's not my choice... </font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">The data comes from MED and has been labeled only with NZMG. </font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">And I need to put it in the Landmark soft Seisvision, where I'm using the projection UTM60S to builds my maps...</font> </p>
<p style="margin-top: 0; margin-bottom: 0">
<font face="Dialog" size="2">And yes, I feel much better on land !... </font> </p>
<br>
<BR>
<div>
Please consider the environment before printing this email.<br><br>NIWA
is the trading name of the National Institute of Water & Atmospheric
Research Ltd.
</div>
</BODY></HTML>