Return a region from a numpy array.
        
        :param array: :class:`numpy.ndarray`
        :param identifier: value representing the region to select in the array
        :returns: :class:`jicimagelib.region.Region`

def select_from_array(cls, array, identifier):
        """Return a region from a numpy array.
        
        :param array: :class:`numpy.ndarray`
        :param identifier: value representing the region to select in the array
        :returns: :class:`jicimagelib.region.Region`
        """

        base_array = np.zeros(array.shape)
        array_coords = np.where(array == identifier)
        base_array[array_coords] = 1

        return cls(base_array)