The ViewerRotation specifies the rotation around the axis defined by the chart
center point (0, 0, 0) and the camera coordinates defined by the Elevation,
Rotation and Distance(not exposed because it is computed dynamically) properties.
You may need to modify the ViewerRotation when you want to display horizontal or
top to bottom charts. However for such purposes it is recommended to use the
PredefinedChartStyle property of the Chart object, because it also changes the
chart axis label positioning and others.
Example
The following example modifies the ViewerRotation applied on the chart camera
to display a left to right horizontal chart.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2