Figure 4From: Quantitative shape analysis with weighted covariance estimates for increased statistical efficiency Fly wing data (P-FL1): major eigenvalues of the error using our 1, 2 and 3 component models against those computed using a repeatability test on four new semi-landmarks placed manually on a subset of data; the 2 component model gives closest agreement to the expected localisation values; the two dashed lines show the ±2.8σ range. Back to article page