ACSII II Guide to Geometric Morphometrics in MorphoJ

 

4.  Procrustes Fit

The first step in a morphometric analysis is to extract shape information by Procrustes superimposition on the data set. MorphoJ runs a full Procrustes fit and projects the data onto tangent space. To run a Procrustes fit select the Mormyrid data set under the Project Tree window, select Preliminaries menu and click on New Procrustes Fit which opens the following dialog box:




















There are 3 choices in this dialog box and the default is aligning by principal axes. After selecting the default click Perform Procrustes Fit and it does give a consensus for all the landmarks. It also shows a graphical representation of the data clouds for each individual landmark.

After the Procrustes fit the graphical representation of the dataset looks like the following:













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