getValueAtViewPort(id, vpCoor [, isLogScale ])

Converts a view port coordinate to a value of the specified data scale.

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

This method always returns a numeric value. If the axis scale is a date/time scale, and you are expecting a DateTime data type, please use Chart.NTime to convert the number to the DateTime data type.

Argument	Default	Description
id	(Mandatory)	The name of the data scale.
vpCoor	(Mandatory)	The view port coordinate.
isLogScale	false	true if the conversion is based on a logarithmic scale. false if the conversion is based on a non-logarithmic scale.

The value of the specified data scale at the view port coordinate.