Classe: Image_Graph_DataPreprocessor_Function  - X-Ref

Formatting a value using a userdefined function.

Use this method to convert/format a value to a 'displayable' lable using a (perhaps)
more complex function. An example could be (not very applicable though) if one would
need for values to be displayed on the reverse order, i.e. 1234 would be displayed as
4321, then this method can solve this by creating the function that converts the value
and use the FunctionData datapreprocessor to make Image_Graph use this function.