<div>Assuming that the ED50 data are in UTM projection, you can use:</div>
<div> </div>
<div> cs2cs +proj=utm +ellps=intl +zone=30 +towgs84=-84,-107,-120 +to +proj=latlong +datum=WGS84</div>
<div> </div>
<div>Depending on the longitude the zone can also be 31 or 29 (Portugal is all 29). The datum shift parameters (+towgs84) introduce errors of a few meters.</div>
<div> </div>
<div> </div>
<div>Regards</div>
<div> </div>
<div>José Gonçalves</div>
<div><br><br><br> </div>
<div class="gmail_quote">2009/3/20 Marc Marí Dell'Olmo <span dir="ltr"><<a href="mailto:marceivissa@gmail.com">marceivissa@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Dear all,<br><br>Can anyone tell me how to convert coordinates ED50 Spain/Portugal (not<br>only ED50) to WSG84 (google maps coordinates). I'm new in these<br>
issues.<br><br>Can anyone tell me the instructions +proj, +k, +ellps, etc. that I<br>have to use for conversion?<br><br>Thank you,<br><br>Marc<br>_______________________________________________<br>Proj mailing list<br><a href="mailto:Proj@lists.maptools.org">Proj@lists.maptools.org</a><br>
<a href="http://lists.maptools.org/mailman/listinfo/proj" target="_blank">http://lists.maptools.org/mailman/listinfo/proj</a><br></blockquote></div><br>