1

I'm looking for some starting points to implement an algorithm to calculate Helmert Transformation parameters (4- and/or 7-parameter). I found already some basic implementation e.g. https://github.com/rstulug/Helmert_transformation. Currently I'm not quite sure how to deal with remaining errors after the least square fit.

closed as off-topic by ahmadhanb, whyzar, nmtoken, Vince, Andre Silva Nov 19 '18 at 1:04

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "When seeking help to debug/write/improve code always provide the desired behavior, a specific problem/error and the shortest code (as formatted text, not pictures) needed to reproduce it in the question body. Providing a clear problem statement and a code attempt helps others to help you." – ahmadhanb, whyzar, nmtoken, Vince, Andre Silva
If this question can be reworded to fit the rules in the help center, please edit the question.

  • Maybe related: osgeo-org.1560.x6.nabble.com/… – AndreJ Nov 16 '18 at 11:09
  • Yes close, sad that the suggested program (helmparms3d.sourceforge.net) shows no source code :P. – Sceada Nov 16 '18 at 12:22
  • Nevermind, I found the source code from helmparms3d. Well maybe it helps me a little bit. But my question regarding the handling of the residuals is still open. – Sceada Nov 16 '18 at 14:32
  • You can regard the remaining error as the "accuracy of the transformation". – AndreJ Nov 16 '18 at 18:36