Geocentric Coordinates

[Eran Burstain]

Hi !
How can I convert geocentric ECEF coordinates to UTM and vice versa ?
tnx.

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[Paul Kelly-4]

On Mon, 6 Oct 2008, Eran Burstain wrote:

> Hi !
> How can I convert geocentric ECEF coordinates to UTM and vice versa ?

Something like
cs2cs +proj=geocent +ellps=XXXX +to +proj=utm +zone=XX +ellps=XXXX
should do it. You might want some datum transformation parameters too
(+towgs84=X,X,X) depending on your application.

Paul

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[Eran Burstain]

Tnx, but how do i do it from code ?
I understand that I should initialize two projections with the "+proj=geocent +ellps=XXXX" and "+proj=utm +zone=XX +ellps=XXXX" strings,
but then what ?
(Transformation should have 3 points for each input and 3 for each output with height above ellipsoid, isn't it ?)

On Mon, Oct 6, 2008 at 11:19 AM, Paul Kelly <paul-grass@...> wrote:

On Mon, 6 Oct 2008, Eran Burstain wrote:

Hi !
How can I convert geocentric ECEF coordinates to UTM and vice versa ?

Something like
cs2cs +proj=geocent +ellps=XXXX +to +proj=utm +zone=XX +ellps=XXXX
should do it. You might want some datum transformation parameters too (+towgs84=X,X,X) depending on your application.

Paul

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