Legendre polynomials application

[romant61]

I need some help. I fitted a 7th order legendre polynomial and got the L0 to L7 coefficients for different ANOVA classes. How can I get a back transformation in order to plot each class using the estimated coefficients?
Thanks to anybody.
Roberto.

 

[kryptyk]

Expansion of a function in terms of Legendre polynomials directly provides a polynomial function you can use to plot approximations to the function. So I'm not sure what you're referring to here.