setdifsa
==============================================

Purpose
----------------
Returns the unique elements in one string vector that are not present in a second string vector.

Format
----------------
.. function:: sy = setdifsa(sv1, sv2)

    :param sv1: data
    :type sv1: Nx1 or 1xN string vector

    :param sv2: data
    :type sv2: Mx1 or 1xM string vector

    :return sy: Lx1 vector containing all unique values that are in *sv1* and are not in *sv2*, sorted in ascending order.

    :rtype sy: vector

Examples
----------------

::

    string sv1 = { "mary", "jane", "linda", "john" };
    string sv2 = { "mary", "sally" };

    sy = setdifsa(sv1, sv2);

Now *sy* is equal to:

::

    jane
    john
    linda

Remarks
-------

Place smaller vector first for fastest operation.

When there are a lot of duplicates it is faster to remove them first
with :func:`unique` before calling this function.

Source
------

setdif.src

.. seealso:: Functions :func:`setdif`