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# test.center.R: test plotmo's center and ndiscrete args
# Stephen Milborrow, Berea Apr 2011
source("test.prolog.R")
library(rpart.plot)
library(plotmo)
library(earth)
data(etitanic)
et <- etitanic[, c("survived", "pclass", "sex", "age")]
et$pclassn <- as.numeric(et$pclass)
et <- et[c(30:80,330:380,630:680), ]
par(mfrow=c(3,3))
par(mar=c(3, 3.5, 3, 0.5))
par(mgp=c(1.5, .5, 0))
ndiscrete <- 0
#--- row 1
set.seed(844)
a1 <- lm(survived~pclassn+sex, data=et)
plotmo(a1, all2=T, do.par=F, degree1=NA, degree2=1, center=TRUE, clip=F,
main="a1: survived~pclassn+sex\n(default ndiscrete)",
pt.col=ifelse(et$survived, "black", "red"),
pt.pch=".", pt.cex=2.5, lab=c(1,1,1))
set.seed(844)
plotmo(a1, degree1=1, all2=T, degree2=0, do.par=F, xflip=T, center=TRUE, clip=F,
grid.levels=list(sex="f"), ndiscrete=ndiscrete,
main="pclassn with sex=\"female\"",
smooth.col="lightblue", smooth.lwd=2,
pt.col=ifelse(et$survived, "black", "red"),
pt.pch=".", pt.cex=2.5)
set.seed(844)
plotmo(a1, degree1=1, all2=T, degree2=0, do.par=F, xflip=T, center=TRUE, clip=F,
grid.levels=list(sex="m"), ndiscrete=ndiscrete,
main="pclassn with sex=\"male\"",
smooth.col="lightblue", smooth.lwd=2,
pt.col=ifelse(et$survived, "black", "red"),
pt.pch=".", pt.cex=2.5)
#--- row 2
a2 <- lm(survived~pclassn*sex, data=et)
set.seed(844)
plotmo(a2, all2=T, do.par=F, degree2=1, degree1=0, center=TRUE, clip=F,
main="a2: survived~pclassn*sex\n(default ndiscrete)")
set.seed(844)
plotmo(a2, degree1=1, all2=T, degree2=0, do.par=F, xflip=T, center=TRUE, clip=F,
grid.levels=list(sex="f"), ndiscrete=ndiscrete,
main="pclassn with sex=\"female\"",
smooth.col="lightblue", smooth.lwd=2,
pt.col=ifelse(et$survived, "black", "red"),
pt.pch=".", pt.cex=2.5)
set.seed(844)
plotmo(a2, degree1=1, all2=T, degree2=0, do.par=F, xflip=T, center=TRUE, clip=F,
grid.levels=list(sex="m"), ndiscrete=ndiscrete,
main="pclassn with sex=\"male\"",
smooth.col="lightblue", smooth.lwd=2,
pt.col=ifelse(et$survived, "black", "red"),
pt.pch=".", pt.cex=2.5)
#--- row 3
par(mfg=c(3,2))
a3 <- lm(survived~pclassn, data=et)
set.seed(844)
plotmo(a3, do.par=F, xflip=T, center=TRUE, clip=F, ndiscrete=ndiscrete,
main="a3: survived~pclassn", degree1.col=1,
smooth.col="lightblue", smooth.lwd=2,
pt.col=ifelse(et$survived, "black", "red"),
pt.pch=".", pt.cex=2.5)
plot(0, 0, type="n", axes=FALSE, xlab="", ylab="")
#--- row 1
# note that this is an example of a model that gets generated differently
# with Scale.y=TRUE vs Scale.y=FALSE (although not shown here)
a4 <- earth(survived~pclassn+age, data=et, degree=2)
set.seed(844)
plotmo(a4, do.par=F, center=TRUE, clip=F, ylim=c(-.6,.7),
main="earth: survived~pclassn+age\n(default ndiscrete)", degree1=0, all2=T)
set.seed(844)
plotmo(a4, do.par=F, xflip=F, all1=T, center=TRUE, clip=F, ylim=c(-.6,.7),
main="a4, age with pclassn=1st", ndiscrete=ndiscrete,
degree2=0, degree1=2,
# grid.levels=list(pclassn="1st"),
grid.levels=list(pclassn=1),
smooth.col="lightblue", smooth.lwd=2,
pt.col=ifelse(et$survived, "black", "red"),
pt.pch=".", pt.cex=2.5)
set.seed(844)
plotmo(a4, do.par=F, xflip=F, all1=T, center=TRUE, clip=F, ylim=c(-.6,.7),
main="age with pclassn=3rd", ndiscrete=ndiscrete,
degree2=0, degree1=2,
grid.levels=list(pclassn=3),
smooth.col="lightblue", smooth.lwd=2,
pt.col=ifelse(et$survived, "black", "red"),
pt.pch=".", pt.cex=2.5)
#--- row 2
set.seed(844)
plotmo(a4, do.par=F, center=TRUE, clip=F, type2="im",
main="a4 earth: survived~pclassn+age\n(default ndiscrete)", degree1=0, all2=T, yflip=T,
pt.col=ifelse(et$survived, 1, "red"),
image.col=gray(seq(6, 10, length=10) / 10), xflip=T,
pt.pch=".", pt.cex=2)
set.seed(844)
plotmo(a4, do.par=F, xflip=F, all1=T, center=TRUE, clip=F,
main="pclassn with age=10", ndiscrete=ndiscrete,
degree2=0, degree1=1,
grid.levels=list(age=10),
smooth.col="lightblue", smooth.lwd=2,
pt.col=ifelse(et$survived, "black", "red"),
pt.pch=".", pt.cex=2.5)
set.seed(844)
plotmo(a4, do.par=F, xflip=F, all1=T, center=TRUE, clip=F,
main="pclassn with age=40", ndiscrete=ndiscrete,
degree2=0, degree1=1,
grid.levels=list(age=40),
smooth.col="lightblue", smooth.lwd=2,
pt.col=ifelse(et$survived, "black", "red"),
pt.pch=".", pt.cex=2.5)
source("test.epilog.R")
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