Deleting certain columns in a matrix
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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
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
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).
采纳的回答
Walter Roberson
2012-7-15
1 个投票
更多回答（1 个）
Reza Zakernejad
2017-10-12
编辑：Reza Zakernejad
2017-10-12
8 个投票
A(:,[m n p...])=[]; % A input matrix and m n p are #columns to be deleted
1 个评论
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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