Peng Cai wrote:
Hi R Users,
I'm trying to plot a stacked barplot. Here is data:
Sample Col1 Col2 Col3
Row1 -2 4 -1
Row2 3 -2 4
Row3 3 5 -2
Row4 4 1 -1
I'm using following R code:
library(lattice)
dta<-read.table("data.txt", header=TRUE, row.names="Sample")
barchart(data.matrix(dta),
horizontal=FALSE,
stack=TRUE,
col=2:4,
auto.key=list(space="right",
title=names(dimnames(dta))[2])
)
Above code is working fine, but I need help with:
1) Legend boxes have default colors, whereas I'm looking them to match with
barplot colors (col=2:4).
replace the line
col = 2:4,
with
par.settings = simpleTheme(col = 2:4),
2) Can I increase scale for y axis, like currently it plotting -2,0,2,4,...
I would like it as -2,-1,0,1,...
add the line
scales = list(y = list(at = -2:8)),
or whatever tick locations you prefer.
-Peter Ehlers
Any help would be greatly appreciated,
Thanks,
Peng
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