Hi.
Is there an analog to abline() that can be used to plot a polynomial fit?
For example, I can draw the straight-line fit
fit <- lm(y ~ x)
via
abline(coef=fit$coef)
but I'm not sure how to draw the polynomial fit
fit <- lm(y ~ poly(x,2))
I do see the function curve(), but not how to prepare an expr for
curve() based on the coefficients returned by the polynomial fit.
Thanks for your help,
/Ronnen.
/P.S. E-mailed CCs of posted replies appreciated.
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