Hello Antoine,

Exactly, that was our post and we are trying to make it in practice.

Okay, I modified your project. Please take a look at antoine.zip.

I believe, the directions between the CD points cannot be used together with a "true" set of directions because the orientations differ. I was not sure, how you ensure, that the directions between the CD points are similar orientated. For that reason, I disabled these observations.

I would also suggest to use some kind of trimmed coordinates to avoid numerical instabilities, i.e., reducing all X/Y/Z coordinates to their average values.

In present configuration, your networks is not controlled. Since no true redundant observations are available, thus, you have no chance to remove possible outliers.

/Micha