How to delete values in unqualified matrix rows?

I want to try to delete values in a binary matrix that do not have "n" times consecutive 1s with the following example :

matrix = [0 1 1 0 0 1 0 1 0 1 1 1 0 0];

checkmatrix(matrix,n);

when n = 1, the function returns :

[0 1 1 0 0 1 0 1 0 1 1 1 0 0]

when n = 2, the function returns :

[0 1 1 0 0 0 0 0 0 1 1 1 0 0]

when n = 3, the function returns :

[0 0 0 0 0 0 0 0 0 1 1 1 0 0]

when n = 4, the function returns :

[0 0 0 0 0 0 0 0 0 0 0 0 0 0]

is there a special syntax or is there a specific method for solving this case?

Answer 1

[Walter Roberson]

bwareafilt(logical(matrix), [n inf])