Skip to main content
. 2014 Dec 17;14:44. doi: 10.1186/s12861-014-0044-7

Table 1.

Summary of IO5 condensation ablation experiment shape analysis and principal component analysis results for the elliptical Fourier descriptors of adult element contour shape

PC axis
PC1 PC2 PC3 PC4
IO4 shape analysis Eigenvalue* 11.8 1.98 1.48 0.63
Proportion variance (%) 68.64 11.54 8.63 3.66
Cumulative variance (%) 68.64 80.19 88.82 92.48
Shape described Flat-wing size Element width Flat-wing ventral edge Flat-wing dorsal edge
IO5 shape analysis Eigenvalue* 8.56 4.98 3.28 2.83
Proportion variance (%) 37.42 21.75 14.32 12.37
Cumulative variance (%) 37.42 59.18 73.50 85.87
Shape described Element width Flat-wing size Canal bend Ventral edge shape

*Read eigenvalue as χ x 10-3.

Eigenvalues, proportion of variances, and shape character described for PC1-4 for adult IO4 and IO5 elements of ablation, control, and control-side adult specimens.