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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