[Proj] Transformation of rotation

[support.mn at elisanet.fi]

Hello,

use 7 parameter datum shift - that include rotational parameters for each axis

in proj.4 you use towgs84 statement to define any datum shift.

see also:

http://en.wikipedia.org/wiki/Helmert_transformation

Janne.

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Filip Arlet [filip89 at seznam.cz] kirjoitti: 
> 
> Hi I want to transform rotation in XY (one angle) from one coordinate system
> to another (JTSK -> WGS84). I'm want to transform text, defined by origin, 
> scale and rotation (angle around z axis). Transfrom scale from one system to
> another is not a problem, but how can I transform rotation. I know that 
> transformation includes different projections, so its not going to be 
> accurate (i would have to transform text definitions too). But partial 
> solution is fine.
> 
> Filip
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