ndzinn at houston.rr.com
Sat Feb 26 17:26:57 EST 2005
Quick first question from a newcomer exploring the capabilities of Proj.4 before attempting to compile the code.
I've read the documentation plus recent threads on this list serve that discuss datum shifts (of the 7-parameter variety), which, apparently, Proj.4 does not support. My question is whether Proj.4 supports Earth-Centered Earth-Fixed (ECEF) geocentric Cartesian coordinates or not (i.e, lat/lon/hgt => ECEF X/Y/Z). Seems it would be simple to build that functionality into the Proj.4 code, but I gather that the documentation's references to "cartesian coordinates" means Eastings/Northings in projected space, and not ECEF. Non-support for geocentric datum shifting seems to support this tentative conclusion. Can someone confirm for me?
Thanks, Noel Zinn
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Proj