Removing zero columns from matrix

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Esegboria Osarhemen
评论： Ömer BOZKURT 2022-8-16
This is my code:
N=3;
x=randi(9,3,N)
func = @(index)bsxfun(@minus,x(:,1:N),x(:,index));
mat = cell2mat(arrayfun(func,1:N,'uni',0))
This is my output:
0 -5 -4 5 0 1 4 -1 0
0 0 -6 0 0 -6 6 6 0
0 -2 5 2 0 7 -5 -7 0
How do I remove columns with zeros?

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madhan ravi
madhan ravi 2019-2-10
编辑：Guillaume 2020-4-1
matrix(:,any(matrix == 0))=[] % removes column if there is any zero in the column
matrix(:,all(matrix == 0))=[] % removes column if the entire column is zero
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Ömer BOZKURT
Ömer BOZKURT 2022-8-16
Hello Sir. I have a question about delete columns. I want to delete columns if columns have more than 3 zero. How can I find it? Thanks for helping.

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