all
all(X) returns true if all of vector's X elements are non zeros.
If X is a matrix a logical row vector is returned with the i-th element indicating whether all of X i-th column elements are all non zero or not.
If X is a matrix a logical row vector is returned with the i-th element indicating whether all of X i-th column elements are all non zero or not.
Examples
> all([0 0 4]) [ans:false]
> all([1 2 3]) [ans:true]
> all([1 2 0; 2 2 0; 1 0 0])# 1 0 0
> all([1 2 0; 2 2 0; 1 0 0],2)# 0 0 0
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