Hello, I am getting the following error when I try to chart time series: Exception in thread "main" java.lang.Error: Unresolved compilation problem: The method add(double, double) in the type XYSeries is not applicable for the arguments (Date, Double) X is date - week endings (date datatype) Y is product price (double(20,5) Serie - account name - String Please help. Thank you, Peter.
I would not use this very basic and simple chart tool. Do not waste your time with it and start working with dedicated tools like JasperReports or BIRT. Both are Open Source and lets you create charts in a professional manner.