Deleting rows of an array

Hi all,

I have an array 48X365, where some of the columns are zero!

Is there any way to delete them and get an array without these columns?

The thing is that the columns appear randomly

thanks!

Answer 1

[Guillaume]

if you want to delete columns with all 0:

yourmatrix(:, all(yourmatrix == 0)) = [];

if you want to delte columns with any 0:

yourmatrix(:, any(yourmatrix == 0)) = [];

Answer 2

[KSSV]

Let data be your matrix where few columns are zeroes. Use:

data(:, sum(data,1)==0) = [] ;  % removes columns with zeroes

[Stephen23]

Buggy code: if the column contains [-1;1], then this code would incorrectly identify it and remove it.

Guillaume's answer is the correct way to do this.

[KSSV]

Yes....it flashed me now...