Patricio <br><br>The problem is that you don't have a datum transformation for the second coordinate system. You should have something like:<br><br>.... +to +proj=utm +zone=19 +south +ellps=intl +units=m +no_defs +towgs84=-288,175,-376<br>
<br>I got these parameters from ArcGIS. There are several other sets of datum parameters, probably more adequate for different areas.<br><br>Regards<br><br>José A. Gonçalves<br><br> <br><br><br><br><br><br><div class="gmail_quote">
2011/1/24 Patricio Cifuentes Ithal <span dir="ltr"><<a href="mailto:pcifuentes@siigsa.cl">pcifuentes@siigsa.cl</a>></span><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div link="blue" vlink="purple" lang="ES-CL"><div><p class="MsoNormal"><span style="color: rgb(54, 95, 145);">Hi list!,</span></p><p class="MsoNormal"><span style="color: rgb(54, 95, 145);">I’ have a problem, I’ need transforrm one point of projection 32719to 24879,</span></p>
<p class="MsoNormal"><span style="color: rgb(54, 95, 145);"> </span></p><p class="MsoNormal"><span style="color: rgb(54, 95, 145);">Point 32719</span></p><p class="MsoNormal"><span style="color: rgb(54, 95, 145);">362802.140 7955337.740</span></p>
<p class="MsoNormal"><span style="color: rgb(54, 95, 145);"> </span></p><p class="MsoNormal"><span style="color: rgb(54, 95, 145);">Example:</span></p><p class="MsoNormal"><span style="color: rgb(54, 95, 145);"> </span></p>
<p class="MsoNormal"><span style="color: rgb(54, 95, 145);">cs2cs +proj=utm +zone=19 +south +ellps=WGS84 +datum=WGS84 +units=m +no_defs +to +proj=utm +zone=19 +south +ellps=intl +units=m +no_defs</span></p><p class="MsoNormal">
<span style="color: rgb(54, 95, 145);">362802.140 7955337.740</span></p><p class="MsoNormal"><span style="color: rgb(54, 95, 145);">362796.55 7955312.55 0.00 (is incorrect!!)</span></p><p class="MsoNormal"><span style="color: rgb(54, 95, 145);"> </span></p>
<p class="MsoNormal"><span style="color: rgb(54, 95, 145);"> </span></p><p class="MsoNormal"><span style="color: rgb(54, 95, 145);">The real transform is</span></p><p class="MsoNormal"><span style="color: rgb(54, 95, 145);">362996.74417800002 7955670.922740000</span></p>
<p class="MsoNormal"><span style="color: rgb(54, 95, 145);"> </span></p><p class="MsoNormal"><span style="color: rgb(54, 95, 145);">Why not transform correctly? I missing something?</span></p><p class="MsoNormal"><span style="color: rgb(54, 95, 145);"> </span></p>
<p class="MsoNormal"><span style="color: rgb(54, 95, 145);"> </span></p><p class="MsoNormal"><span style="color: rgb(54, 95, 145);"> </span></p><p class="MsoNormal"><b><span style="font-size: 9pt; color: rgb(54, 95, 145);">Patricio Cifuentes Ithal</span></b></p>
<p class="MsoNormal"><span style="font-size: 9pt; color: rgb(54, 95, 145);">Ingeniero en Informática</span></p><p class="MsoNormal"><span style="font-size: 9pt; color: rgb(54, 95, 145);">Unidad de Informática</span></p><p class="MsoNormal">
<span style="font-size: 9pt; color: rgb(54, 95, 145);">Fono : 02 - 334 73 69</span></p><p class="MsoNormal"><span style="font-size: 9pt; color: rgb(54, 95, 145);"><a href="http://www.siigsa.cl" target="_blank">www.siigsa.cl</a></span></p>
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