Hi All,<br><br>I found that running the following command:<br>cs2cs +proj=geocent +ellps=WGS84 +to +proj=geocent +ellps=WGS84 <br><br>with input "123 655 123" yields "-122.87 -654.29 -122.86"<br><br>As I understand it, the command would project a point from a geocentric frame to the same frame, which should result in a point with the same coordinates. Why the difference in output? I have only recently stepped into the shallow parts of the deep waters of geodesy, having only learnt the term "geodetic" two weeks ago...So while it may not be meaningful to call the command above, I wonder if the output is as expected, and if so, I would definitely appreciate someone setting my understanding right.<br>
<br>Thanks.<br><br>