A funtion is created from functionFactory by
- Pre-defined functions
- G (gaussian)
- GG (gaussian + gaussian)
- E (exponential)
- EE (exponential + exponential)
- Px (x degree polynomial)
- sin, cos, tan
- e, exp, log
- +, -, *, / and ** are supported.
- Any function cataloged by the user can be used.
Currently PAIDA can not plot 3D function.