Dear all,<br><br>I'm using vtkPCAStatistics to analysis the principle directions of a set of 3D points. I ran the PCA with world coordinates and display coordinates of the same set of points. However, ther result shows that there is always about 0.2 degree difference. During the test, my camera remains the default settings.<br>
<br>My question is, is this difference caused by bug or it just should be in this way?<br><br>Thank you very much.<br><br>Best wishes<br>Long<br>