Perhaps this describes the problem: http://www.killetsoft.de/p_svpa_e.htm
--
David Mitchell
Devon McCormick wrote:
Are you saying you need to work backwards from the source and
destination points to derive the 7 parameters?
On 1/22/07, Faludi Zoltán <[EMAIL PROTECTED]> wrote:
Hello!
How can I implement the calculation of 3D helmert transformation
parameters (7 param)?
dx: shift in meters
dy: shift in meters
dz: shift in meters
rx: rotation in arc seconds
ry: rotation in arc seconds
rz: rotation in arc seconds
ppm: scaling in parts per million
I have two matrices with the common points of the source (src) and the
destionation (dst) coordinate system.
for example:
src=. 10 3 $ 4190468.039 1419136.810 4578982.785 4198120.436 1411059.537
4574631.898 4198048.482 1417658.260 4572620.884 4192498.898 1425966.119
4575143.392 4186048.597 1425904.183 4580905.806 4184439.769 1410536.684
4587280.046 4186429.631 1417172.136 4583253.796 4188328.078 1406719.780
4584890.778 4178864.584 1419611.655 4589354.898 4180122.057 1426529.969
4586084.915
dst=. 10 3 $ 4190406.336 1419205.511 4578987.084 4198058.784 1411128.221
4574636.297 4197986.816 1417726.961 4572625.286 4192437.202 1426034.821
4575147.692 4185986.869 1425972.859 4580910.112 4184378.098 1410605.362
4587284.395 4186367.950 1417240.794 4583258.087 4188266.426 1406788.485
4584895.125 4178802.915 1419680.300 4589359.234 4180060.331 1426598.633
4586089.223
--
Zoltan
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