Hi there,
I'm using the lattice package to create an xy plot of abundance vs. depth for 5
stages of barnacle larvae from 5 species. Each panel of the plot represents a
different stage, while different loess smoothers within each panel should
represent different species.
However, I would like depth to be on the y-axis and abundance to be on the
x-axis, because this is more intuitive as an oceanographer. The smoothing
curves would then represent the abundance profiles with depth of the larvae. I
have tried just switching depth and abundance in the plot formula/coding, but
this means that the loess smoother is based on averaging depth values for each
abundance, which means that the curves give multiple possible abundances at
each depth level. Rather, I would like the loess smooth to still be based on
'averaging' abundance at each depth.
Essentially, I would like a mirror image of the plot from this code:
ord<-order(Zoo_nocyp$Depth_m, decreasing=TRUE)
xyplot(log10Ab[ord]~factor(-1*Depth_m[ord])|StageF[ord],
data=Zoo_nocyp[Zoo_nocyp$log10Ab!="0" ,],
type=c("p","smooth"),
par.settings=list(strip.background=list(col="white"),
fontzize=list(text=16,points=10), lty = 0),
space=0, border=NA,
col=c("blue","red","green","purple","orange"),
stack=TRUE, groups=Zoo_nocyp$SpeciesF,
key=
list(title="Species",
cex.title=1,text=list(c("BB","BC","CH","SB","VS")),space="right",
rectangles=list(size=2,
border="white",col=c("blue","red","green","purple","orange"))),
xlab="depth (m)", ylab="log10 abundance",
layout=c(2,3))
which is different to what you get when you switch log10Ab and Depth_m.
Is there any way to specify the smoothers to be based on sequential y-axis
values, rather than x? Or to get the mirror image of a plot?
I can provide a dataset offline, for those interested.
Thanks very much,
Raeanne
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