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\value{
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\value{
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  A replacement for \code{call} for the \code{predvars} attribute of
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  A replacement for \code{call} for the \code{predvars} attribute of
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  the terms.
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  the terms.
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}
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}
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\seealso{
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\seealso{
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  \code{\link{model.frame}}, \code{\link{poly}}, \code{\link{scale}},
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  \code{\link{model.frame}}, \code{\link{poly}}, \code{\link{scale}};
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  \code{\link[splines]{bs}}, \code{\link[splines]{ns}},
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  \code{\link[splines]{bs}} and \code{\link[splines]{ns}} in package
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  \code{\link[datasets]{cars}}
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  \pkg{splines}, \code{\link[datasets]{cars}}
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}
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}
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\examples{
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\examples{
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## using poly: this did not work in R < 1.5.0
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## using poly: this did not work in R < 1.5.0
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fm <- lm(weight ~ poly(height, 2), data = women)
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fm <- lm(weight ~ poly(height, 2), data = women)
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plot(women, xlab = "Height (in)", ylab = "Weight (lb)")
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plot(women, xlab = "Height (in)", ylab = "Weight (lb)")