Deleting certain columns in a matrix

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Mate 2u
Mate 2u 2012-7-15
评论： Craig Champlin 2019-12-5
Hi all,
I have a 267x34 matrix. Now I want to delete certain columns within MATLAB.
For instance if I want to delete the 3rd column, 4th column, 8th column, 14th column and 33 column. How would I write this in a code where they all get delete simultaneously?
Thanks,
  2 个评论
Mayank Malaviya
Mayank Malaviya 2016-9-2
编辑：Mayank Malaviya 2016-9-2
B = horzcat(A(1:end,1:n-1),A(1:end,n+1:end)); % A is your matrix and n is the column which is to be removed
Fabian Lischka
Fabian Lischka 2018-11-26
FWIW, above comment from 2016-09-02 does not address the question (deleting multiple columns), and is furthermore possibly a fairly inefficient way of doing what it does (deleting one column).

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Walter Roberson
Walter Roberson 2012-7-15

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Reza Zakernejad
Reza Zakernejad 2017-10-12
编辑：Reza Zakernejad 2017-10-12
A(:,[m n p...])=[]; % A input matrix and m n p are #columns to be deleted
  1 个评论
Craig Champlin
Craig Champlin 2019-12-5
Not sure why this is not the "Accepted Answer". It does exactly what I want to. I have several column indexes of outliers which I found by comparing against a threshold. Using this answer, I can simply put my list into the [] and poof outliers are gone.
outliers = find (errorDist > thresholdValue); % list of outliers
M(:,outliers) = []; % *poof!* clean matrix

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