Capturing non-zeros elements in matrix

Let's say we have a matrix A.From matrix A, I want to remove zeros and create another elements,capturing only non-zeros values. Can you please show me how to perform the above operation.

Answer 1

[Jan]

A = [0 2 3; 4 3 0]
B = A(A ~= 0);

Now B is a vector, not a matrix anymore.

[Walter Roberson]

Or if conciseness is more important than speed:

B = A(~~A)

Answer 2

[Andreas Goser]

A=[0 2 3; 4 3 0]
find(A)

[Walter Roberson]

That would give you the locations of the non-zero elements, but would not in itself create a new array with the non-zero elements. Similar to Jan's answer, this would have to be extended to

B = A(find(A))

[Jan]

@Walter: Of course. I'm sure that Andreas believes in the power of the OP to find this obvious solutionby himself.

Answer 3

[Walter Roberson]

B = nonzeros(A);

The result will be a column vector.