[Proj] Transforming coordinates to Scene ENU system

[Vermeer Martin]

The matrix is presented here:

http://www.navipedia.net/index.php/Transformations_between_ECEF_and_ENU_coordinates

Hth Martin


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-------- Alkuperäinen viesti --------
Lähettäjä: Vermeer Martin
Päivämäärä:18.01.2018 11.45 (GMT+02:00)
Saaja: "PROJ.4 and general Projections Discussions"
Aihe: RE: [Proj] Transforming coordinates to Scene ENU system

Hi,

Note that you need to specify *two* points to do this: both your target point, and the topocentric origin. It seems proj can do this (using both 5819 and 15594, together somehow) but I haven't tried.

But why bother? If you have the WGS84 XYZ of both points, all you need is the 3x3 rotation matrix to topocentric orientation, whic depends only on lat, lon of the topo origin. Then, multiply with the vector of differences DX, DY, DZ and you have your ENU!

Best

Martin


Sent from Android


-------- Alkuperäinen viesti --------
Lähettäjä: Joe
Päivämäärä:18.01.2018 10.34 (GMT+02:00)
Saaja: proj at lists.maptools.org
Aihe: [Proj] Transforming coordinates to Scene ENU system

Hello,

I would like to transform coordinates to a ENU system, but don't know
how to do that. I found several EPSG definitions but they don't seem to
work with PROJ.

I started an issue at the pyproj page that further elaborates my
question.

https://github.com/jswhit/pyproj/issues/129

Can you tell me how to do this?

Kind regards,
Joe
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