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Calculation errorous values problem

1 次查看（过去 30 天）
Ömer Faruk Kurular
关闭： MATLAB Answer Bot 2021-8-20
I need to calculate M matrix and collected 2d and 3d coordinates. When I try to calculate M matrix it gives absurd results. What can be the problem? This is how I do it.
%3d
c1 = [13.5 0 15.3];
c2 = [11.5 0 15.3];
...... more coordinates
%2d
c1_2 = [1221 1293];
c2_2 = [1395 1231];
.... more coordinates
threes = [c1; c2; ...]
twos = [c1_2; c2_2]
The result it gives is so high and it should be very small. So I cannot convert back from 3d to 2d. What is wrong here?
  1 个评论
Matt J
Matt J 2019-9-28
Your edited code contains no calculations, so we cannot say what is wrong....

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回答（1 个）

Matt J
Matt J 2019-9-28
编辑：Matt J 2019-9-28
This is how I do it?
No. You should follow section 3.1 in the attached .pdf file. Among other problems, your current method neglects the pre-normalization recommended in subsection 3.1.2.

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