AMBER: PCA and projections

From: Miguel Ferreira <tetrass.hotmail.com>
Date: Wed, 01 Nov 2006 14:11:57 +0000

Dear amber users,

I want to perform essential dynamics using ptraj and IED software. After
strip the waters and ions of my trajectory I used the following scripts to
calculate the eigenvectors and the corresponding projections:

trajin mds_semH2O.mdcrd.gz
rms first *
matrix covar name mcovar
analyse matrix mcovar out evec.pev vecs 25
go


trajin mds_semH2O.mdcrd.gz
rms first *
projection modes evec.pev out proj.ppj beg 1 end 25
go


The first script ran ok and I obtained the evec.pev file. However, the
second script gave me the following error at command line:

--- > FYI: Number of read evecs is 1, number of requested evecs is 25
WARNING in ptraj(), transformProjection: no. of atom coords does not agree
with no. of vect elementsignoring command


Does anyone knows what this means? Any suggestions to solve this problem?

Thanks in advance
Miguel

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Received on Sun Nov 05 2006 - 06:07:07 PST
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