filter data in matrix

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MOH
MOH 2021-10-29
评论： MOH 2021-10-29
I have a matrix with 500 rows and two columns, I want to filter the first column when the value < 100 it shoud be removed. so, the new matrix will have the filtered data for the 2 columns.
C is the matrix
filt = C(:,1)<100;
C(filt) = [];
this will remove the data but will only return the first coumn . I want to have the second one also corsponding to that filter.

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KSSV
KSSV 2021-10-29
编辑：KSSV 2021-10-29
Let A be your matrix of size m*2.
idx = A(:,1)<100 ; % get logical indices in first column less than 100
A(idx,:) = [] ; % remove those rows
You have to use :, which is read as all the.

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