Realignment of columns in a matrix with one (or more) values out of sync -- a "voting" algorithm?

Hello,

I have what I think is a rather simple question. I have a three column matrix of the times of peaks calculated from three common-time-base vectors. I know how many peaks there should be, and that limits the calculation. On occasion there is a misalignment like the following:

    13    17    15
    24    36    33
    34    56    59
    59    75    75
    75    96    97
    97   113   114
   134   134   135

The “24” is inserted, and a value of “113” or “114” is dropped in the first column. The numbers are close but not exact, and a mean or median of two out of three would be a good guess. Any suggestions on how to implement such a realignment?

Thanks

Doug Anderson

Answer 1

[Walter Roberson]

Perhaps something like,

nX = zeros(size(X));
m = median(X,2);
for K = 1 : size(X,2)
  nX(:,K) = interp1(X(:,K), X(:,K), m);
end

[Douglas Anderson]

Wow! Perfect!

Thank you so very much Walter!

Doug