.. highlightlang:: us

.. _xyispolygonclosed:

XYIsPolygonClosed
=================

.. index:: XYIsPolygonClosed

.. us.tag  XYIsPolygonClosed ENGLISH XYGet

:ref:`XYIsPolygonClosed`
determines whether the polygon is closed.

.. function::  bClosed = XYIsPolygonClosed(hData)

.. us.return

**Return Value**

If *bClosed* is TRUE (1), the first data point will be joined
to the last point and the enclosed area will be color filled. If FALSE (0),
the area between the curve and a ground line parallel to the x-axis will be
color filled. The height of the ground line can be set with the function
:ref:`XYSetDropValue`.

.. us.params

**Parameters**

.. uparam:: hData

   The handle of a dataset created with :ref:`XYCreate` or
   :ref:`TYCreate`.

.. seealso::
   :ref:`overview-xy-datasets`,
   :ref:`XYSetClosedPolygon`,
   :ref:`XYSetDropValue`,
   :ref:`XYShowFill`,
   :ref:`XYSetFillColor`,
   :ref:`XYCreate`

:sub:`id-1560786`