Multivariate Stats III

Geometric Morphometrics (GM)

involves the analysis of Cartesian geometric coordinates rather than length, area, volume measurements

Steps in a GM analysis

using the geomorph package in R

  1. Get coordinate data (e.g., digitize outline from a photo, use a microscribe, get 3D coordinates from laser scanned specimen, etc)
  2. Perform a Generalized Procrustes Analysis (GPA)
  3. Analyze and visualze the results from the GPA

GM - Step 1 - Coordinates