getViewPortAtValue(id, value [, isLogScale ])

Converts a value of the specified data scale to a viewport coordinate.

Please refer to WebChartViewer.setFullRange on how to define a data scale.

Argument	Default	Description
id	(Mandatory)	The name of the data scale.
value	(Mandatory)	The value to be converted.
isLogScale	false	true if the conversion is based on a logarithmic scale. false if the conversion is based on a non-logarithmic scale.

The viewport coordinate at the value of the specified data scale.