t</a>	z=nt_multishift(x,shifts,amplitudes) - apply multiple shifts to matrix</li><li><a href="nt_pcarot.html" class="code" title="function [topcs,eigenvalues]=nt_pcarot(cov,nkeep,threshold,N)">nt_pcarot</a>	[topcs,eigenvalues]=pcarot(cov,nkeep,threshold,N) - PCA matrix from covariance</li></ul>
This function is called by:
<ul style="list-style-image:url(../matlabicon.gif)">
<li><a href="nt_fixsign.html" class="code" title="function x=nt_fixsign(x)">nt_fixsign</a>	y=nt_fixsign(x) - flip signs to maximize int