Evolvfa: Difference between revisions
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===Purpose=== | ===Purpose=== | ||
Evolving factor analysis (forward and reverse).. | |||
===Synopsis=== | ===Synopsis=== | ||
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===Description=== | ===Description=== | ||
[egf,egr] = evolvfa(xdat) calculates eigenvalues of sub-matrices of xdat and returns results of the forward analysis in egf and reverse analysis in egr. | EVOLVFA calculates the singular values (square roots of the eigenvalues of the covariance matrix) of sub-matrices of <tt>xdat</tt> and returns results of the forward analysis in <tt>egf</tt> and reverse analysis in <tt>egr</tt>. | ||
:[egf,egr] = evolvfa(xdat) calculates eigenvalues of sub-matrices of xdat and returns results of the forward analysis in egf and reverse analysis in egr. | |||
:[egf,egr] = evolvfa(xdat,''plot'') allows the user to control plotting options. When ''plot'' is set to 0 the plot of the results is suppressed. Setting ''plot'' equal to 1 {default} plots the results. | |||
:[egf,egr] = evolvfa(xdat,''plot'',''tdat'') gives the routine an optional vector ''tdat'' to plot results against. | |||
====Inputs==== | |||
* '''xdat''' = input x-block (2D), either a double array or dataset object | |||
====Optional Inputs==== | |||
* '''plot''' = [ 0 | {1} ] - 0 suppresses plotting | |||
* '''tdat''' = vector to plot results (<tt>egf</tt> and <tt>egr</tt>) against | |||
====Outputs==== | |||
* '''egf''' = results of forward analysis | |||
* '''egr''' = results of reverse analysis | |||
===See Also=== | ===See Also=== | ||
[[ewfa]], [[pca]], [[wtfa]] | [[ewfa]], [[pca]], [[wtfa]], [[mcr]], [[mpca]], [[pcaengine]] | ||
Revision as of 06:08, 9 October 2008
Purpose
Evolving factor analysis (forward and reverse)..
Synopsis
- [egf,egr] = evolvfa(xdat,plot,tdat)
Description
EVOLVFA calculates the singular values (square roots of the eigenvalues of the covariance matrix) of sub-matrices of xdat and returns results of the forward analysis in egf and reverse analysis in egr.
- [egf,egr] = evolvfa(xdat) calculates eigenvalues of sub-matrices of xdat and returns results of the forward analysis in egf and reverse analysis in egr.
- [egf,egr] = evolvfa(xdat,plot) allows the user to control plotting options. When plot is set to 0 the plot of the results is suppressed. Setting plot equal to 1 {default} plots the results.
- [egf,egr] = evolvfa(xdat,plot,tdat) gives the routine an optional vector tdat to plot results against.
Inputs
- xdat = input x-block (2D), either a double array or dataset object
Optional Inputs
- plot = [ 0 | {1} ] - 0 suppresses plotting
- tdat = vector to plot results (egf and egr) against
Outputs
- egf = results of forward analysis
- egr = results of reverse analysis