<div dir="ltr">Dear Jose<br><br>Thanks for your answer. Can you help me how can I make certain that both ellepsoids have the same geocentric coordinates.<br>Only the information I am having is below under the section of How does the GLAS ellipsoid compare with WGS 84?<br>
<br><div><a href="http://nsidc.org/data/icesat/faq.html#3_all">http://nsidc.org/data/icesat/faq.html#3_all</a><div><br><div class="gmail_extra"><br clear="all"><div><div dir="ltr">cleo</div></div>
<br><br><div class="gmail_quote">On Tue, Aug 19, 2014 at 6:03 AM, Jose Gonçalves <span dir="ltr"><<a href="mailto:jagoncal@gmail.com" target="_blank">jagoncal@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><div>Cleo<br><br>If cartesian geocentric coordinates are the same and you just want to express them in a different ellipsoid you can do:<br><br>cs2cs -f %.9f +a=6378136.30 +rf=298.257 +proj=latlong +towgs84=0,0,0 +to +a=6378137 +rf=298.25722356 +proj=latlong +towgs84=0,0,0<br>
<br></div><div>If there are shift and rotation you can express them in the +towgs84.<br></div><div><br>Regards<br><br></div><div>José <br></div><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-08-18 15:13 GMT+01:00 Cleo Drakos <span dir="ltr"><<a href="mailto:cleo21drakos@gmail.com" target="_blank">cleo21drakos@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><div style="font-family:arial,sans-serif;font-size:13px">Dear guys,</div><div style="font-family:arial,sans-serif;font-size:13px">
<br></div><div style="font-family:arial,sans-serif;font-size:13px">I have the data (latitudes, longitudes, and elevations) given in ICESat/GLAS ellipsoid. This equatorial radius and reciprocal flattening (1/f) on this ellipsoid are 6378136.30 m and is 298.257 respectively.</div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">Now, I want to convert my data into WGS84 ellepsoid with equatorial radius and reciprocal flattening (1/f) of 6378137.000000 and 298.25722356 respectively.</div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">Can I convert the ellipsoids using Proj?</div><div style="font-family:arial,sans-serif;font-size:13px">
<br></div><span style="font-family:arial,sans-serif;font-size:13px">I hope some of you can help me.</span><span><font color="#888888"><br><div class="gmail_extra"><br clear="all"><div><div dir="ltr">cleo</div>
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