[Proj] cs2cs: Gauss-Krüger to WGS84
andre+joost at nurfuerspam.de
Mon Dec 10 09:08:00 EST 2012
Am 10.12.12 12:09, schrieb Martin Trautmann:
> On 12-12-10 0:41, Jose Gonçalves wrote:
>> This use of cs2cs is not correct. You must run something like:
>> cs2cs /string_for_system_1/ +to/string_for_system2/
> That's not what I did? I thought that
> would be system1 and that
> would include the system2 part.
No. +towgs84 is not the same as +to +init=epsg:4326
Using EPSG codes, the +towgs84 is hidden inside the code number.
>> echo 4491957.175 5511210.407 | cs2cs +init=epsg:31468 +to +init=epsg:4326
>> 11d53'13.028"E 49d44'14.871"N 48.659
> That's close enough to
> 11.88695229 49.73746425 (here)
> 11.88695 49.737475 (from a known opposite conversion)
> But what's the third part of the output line? I did not mind as long as
> it was 0.000, but I do not see it documented.
Thats the height above the ellipsoids surface. You can ignore it.
>> At least this point is in Germany... The datum transformation parameters
>> used are the following:
> That's done automagically? Or do I have to apply this anywhere?
It is implemented in EPSG:31468 (if you have a current proj), but not in
For more precise values, you can look here:
More information about the Proj