man/examples/contourPlot.R

\dontrun{
sdf <- readNAEP(system.file("extdata/data", "M36NT2PM.dat", package = "NAEPprimer"))
lm1 <- lm.sdf(composite ~ pared * dsex + sdracem, sdf)
# plot the results
contourPlot(x=lm1$fitted.values,
	          y=lm1$residuals[,1], # use only the first plausible value
	          m=30,
	          xlab="fitted values",
	          ylab="residuals",
	          main="Figure 1")
# add a line indicating where the residual is zero
abline(0,0)
}

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EdSurvey documentation built on May 2, 2019, 7:30 a.m.