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2 changes: 1 addition & 1 deletion man/contour.lm.Rd
Original file line number Diff line number Diff line change
Expand Up @@ -122,7 +122,7 @@ Lenth RV (2009) ``Response-Surface Methods in R, Using rsm'',
\seealso{\code{\link{contour}}}
\examples{
### Basic example with a linear model:
mpg.lm <- lm((mpg ~ poly(hp, disp, degree = 3), data = mtcars)
mpg.lm <- lm(mpg ~ poly(hp, disp, degree = 3), data = mtcars)
contour(mpg.lm, hp ~ disp, image = TRUE)

### Extended example with an rsm model...
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