Modul GPA, Interactive 3D Visualization, PCA Visualization Parameters slider

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1

Hello all,

I have a logical question regarding the slider increments and their relation to let’s say my PC1 axis.

I did 2D morphometric analysis in other programs (Thin plate spline) and let’s say my sample with highest PC1 score is 0.3, I can extrapolate the deformation 2x or more times (called extrapolation coefficient, if I am not mistaken), which would result in the PC1 score 0.6 for my extrapolated shape. Is it possible to get an extrapolation coefficient from the slider value?

I understand that when selecting PC1 and starting on the position 0 on the slider that this is the mean shape. But when I increase the slider to 100 in the positive direction along the PC1 where would be the data point on my PC1 axis?

2

Magnification factor is now implemented in the GPA module. Make sure you are using the latest stable (v5.10).

3

Thank you very much. This feature is a huge help for interpreting data.