finding column # that contains an integer in a matrix

hi,

I want to find indices of columns of a matrix which contains a specific integer.

say magic(5), how can I find column numbers that has got '5' in it if it exists!

thanks,

Mehrdad

Answer 1

[James Tursa]

X = your matrix;
indices = find(any(X==5)); % columns that have the number 5 in them

[mehrdad asadi]

hi James,

thanks it works! I used to use indices = find(X==5) that didn't work and faced with an error that u can't use 'find()' in this way.

thank you anyway,

[mehrdad asadi]

another question! what about searching in rows? I just wanna know ;)

[James Tursa]

indices = find(any(X==5,2)); % rows that have the number 5 in them

[mehrdad asadi]

got it!

thanks