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<div class="moz-cite-prefix"><font face="Times New Roman, Times,
serif">On 01/22/2013 04:19 PM, Andre Joost wrote:<br>
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<blockquote cite="mid:kdmbla$6fe$2@ger.gmane.org" type="cite">
<pre wrap=""><font face="Times New Roman, Times, serif">Am 21.01.2013 15:12, schrieb Jan Hartmann:
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<pre wrap=""><font face="Times New Roman, Times, serif">5) create two point files, one for the lons and one for the lats. The
coordinates should be the wgs84 values, and the z-value the lon or lat.
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<pre wrap=""><font face="Times New Roman, Times, serif">
I think you made a mistake there, or not stated it clearly.
According to the Beta2007 specification, the grid is related to the
*source* CRS ellipsoid, that is EPSG:4289 Amersfoort latlon for
EPSG:28991 and 28992, and EPSG:4314 DHDN for German Gauss-Krüger CRS.
The shift values are from bessel ellipsoid (or Airy, Clarke or whatever)
to the WGS84 ellipsoid. For reprojection, an iterative solution is
mentioned.
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<font face="Times New Roman, Times, serif">I think you are right
(Hermann Peifer pointed out the same thing). I do not understand
your reference to epsg:4289, though: that epsg number has a wgs84
shift. The original ellipsoid for Amersfoort is jus Bessel, so the
source latlon epsg would be 4308<br>
<br>
Jan</font><br>
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