[R] Different axis limits for each facet in ggplot2
Karl Ove Hufthammer
Karl.Hufthammer at math.uib.no
Mon Jul 16 14:04:57 CEST 2007
Hi!
Is it possible to have different axis limit for each facet in a ggplot2
plot? Here is an example:
--------------------------------------------------------------
library(ggplot2)
x=seq(-10,10,.1)
y=cos(x)
z=sin(x)*10
dat=melt(data.frame(x,y,z), id.var="x")
qplot( x, value, data=dat, facets=variable~., geom="line" )
--------------------------------------------------------------
Both the x and y axes are now the same for both facets. But since the ranges
of the 'y' and the 'z' variable differ so much, I would prefer their y axes
to be different. This is easy to do in 'lattice':
--------------------------------------------------------------
library(lattice)
xyplot( value~x | variable, data=dat, type="l", layout=c(1,2),
scale=list(y="free") )
--------------------------------------------------------------
Is it possible to do this in 'ggplot2' too? I would have thought that
+ scale_y_continuous(limits=c(NA,NA))
would work, but this sets the 'y' axis to cover the range of 'y' and 'z'
*combined* (which is very sensible as a default, but not what I would
prefer here).
--
Karl Ove Hufthammer
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