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- function fitv = pcrfitv(a, c, av, cv, vc, maxrank)
- % PCRFITV Calculate the fit to a validation set with given eigenvectors.
- %
- % fitv = pcrfitv(a, c, av, cv, vc, maxrank)
- %
- % Where:
- %
- % fit is the matrix containing information on the fit
- % a is the training set absorbance matrix
- % c is the training set concentration matrix
- % av is the validation set absorbance matrix
- % cv is the validation set concentration matrix
- % vc is the matrix containing the eigenvectors (factors)
- % maxrank is optional limit to the number of factors tested
- %
- % The first columns of fitv contain the std's of the fit for each
- % component. The last column contains the mean for all components.
- %
-
- % Copyright (c) 1989-92 by The MathWorks, Inc.
-
- [i, j] = size(vc);
- [k, l] = size(c);
- fitv(i, (k + 1)) = 0;
- if nargin == 6, i = maxrank; end
- for n = 1:i;
- proj = vc(:,1:n)' * a;
- error = (c * proj' * inv(proj * proj') * vc(:,1:n)' * av) - cv;
- fitv(n, :) = [std(error') mean(std(error'))];
- end
-