Table 1

Loadings on principal component axes

PCA with three variables

loading on principal component axes

abbreviation

PC 1

PC 2

PC 3

PC 4

PC 5

eye diameter

ED

-0.579

0.188

0.807

-

-

axial length

AL

-0.576

-0.759

-0.303

-

-

lens diameter

LD

-0.577

0.640

-0.507

-

-

percentage of variance explained

98.96

0.74

0.29

-

-


PCA with five variables

loading on principal component axes

abbreviation

PC 1

PC 2

PC 3

PC 4

PC 5

eye diameter

ED

-0.448

0.371

0.169

-0.424

0.673

axial length

AL

-0.446

0.586

-0.368

0.536

-0.190

lens diameter

LD

-0.449

0

0.519

-0.311

-0.655

max. pupil diameter

PDmax

-0.446

-0.467

-0.67

-0.354

0

min. pupil diameter

PDmin

-0.446

-0.546

0.345

0.558

0.268

percentage of variance explained

98.03

1.1

0.4

0.31

0.15


Schmitz and Wainwright BMC Evolutionary Biology 2011 11:338   doi:10.1186/1471-2148-11-338

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