identifying principal component from CPPTRAJ results

[jimfeng9705]

Four data files were generated after CPPTRAJ analysis:
evecs.dat (Evecs file): myEvecs
%eigenvec.dat (Standard Data File): XEVAL_00007[Frac] XEVAL_00007[Cumulative] XEVAL_00007[Eigenval]
project.dat (Standard Data File): Mode1 Mode2 Mode3
helices.nmd (NMwiz output)

How can we generate Figure 6D in your paper? How to identify representative model in each cluster?