.. highlightlang:: us

.. _xyzset3dshowisolines:

XYZSet3DShowIsolines
====================

.. index:: XYZSet3DShowIsolines

.. us.tag  XYZSet3DShowIsolines ENGLISH XYZSet_3d

:ref:`XYZSet3DShowIsolines` shows or hides isolines of a 3D surface map on or off.

.. function::  bool = XYZSet3DShowIsolines(hData, bShow)

.. us.return

**Return Value**

If the function succeeds, the return value *bool* is TRUE (1); otherwise
it is FALSE (0).

.. us.params

**Parameters**

.. uparam:: hData

   The handle of a dataset created with :ref:`XYZCreate`.

.. uparam:: bShow

   *bShow* is TRUE (1), when the isolines should be shown and
   otherwise FALSE (0).

.. us.comment

**Comment**

Isolines can only be drawn on a surface map with a color gradient.

.. seealso::
   :ref:`overview-xyz-datasets`,
   :ref:`XYZCreate`,
   :ref:`XYZGet3DSurfaceAttrib`

:sub:`id-1760195`