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llply
2004 Jun 07
1
contour lines on levelplot?
...ult after much trial and error (R 1.9.1 alpha under Windows
2000):
# setup
DF <- expand.grid(x=1:3, y=1:3)
DF$z <- (DF$x+DF$y)
# Traditional "base" graphics:
image(x=1:3, y=1:3, z=array(DF$z, dim=c(3,3)))
contour(x=1:3, y=1:3, z=array(DF$z, dim=c(3,3)), add=T)
# Lattice hack:
lvlplt <- levelplot(z~x*y, DF)
cont <- contourplot(z~x*y, DF)
print(lvlplt, more=T)
print(cont, position=c(0, 0, 0.9055, 1))
##################
By comparison, the same ugly hack in S-Plus required 0.952 instead
of 0.955. Is this the best we can currently get with a modest effort?
Th...