# Dear R Community,
# I have this data frame:
df1 <- data.frame(
F1 = factor( c( rep("D1",12),rep("D2",12),rep("D3",12) ) ),
F2 = factor( rep( rep( paste("O",1:6,sep=""), rep(2,6) ), 3) ),
F3 = factor( rep( c("V1","V2"), 18 ) ),
S1 =
c(8.840955e-02,2.546822e-01,7.562658e-01,8.801181e-01,6.041766e-02,2.172731e-01,6.542187e-98,
7.067840e-04,1.430933e-01,9.764401e-01,1.380848e-05,1.192620e-01,9.107259e-01,1.235232e-01,
3.021847e-01,1.331351e-01,5.272103e-01,3.663577e-01,1.539690e-38,2.224451e-01,2.873052e-01,
5.110313e-01,7.840802e-01,8.210762e-10,1.553356e-01,4.173335e-01,5.964021e-01,4.955694e-01,
8.849240e-02,5.739598e-01,1.879075e-17,1.071003e-03,7.298928e-01,6.347287e-01,8.884034e-01,
4.460295e-11),
S2 =
c(1.32249139,1.02831831,-0.09650252,-0.05454486,2.62105492,2.00310250,8.07269064,
-1.55397883,1.77390551,0.04161954,7.14188540,-2.98033713,-0.49904251,-0.74309058,
-0.49904251,-0.74309058,1.22492623,-1.79003492,7.60003121,-0.74549596,2.53418936,
-1.60112296,0.67131380,-15.31744351,-0.18380339,0.28628435,-0.18380339,0.28628435,
2.96108998,1.18267783,5.78419118,2.70861763,0.66287857,1.10397741,0.27160971,
-15.37506924) )
# Two of the factors are used to define an array
# of panels with the third showing up as bars along the x axis.
# How do I color the bars according to their sign (red < 0, blue > 0)
# conditional on the value of S2 < .025 - in which case color them gray?
# Initially, I tried to pass a character vector specifying colors,
# which does not achieve the desired result:
library(lattice)
library(latticeExtra)
df1$barcols <- ifelse(df1$S1 <.025, "gray", ifelse( df1$S2 > 0,
"blue","red"))
ctp <- xyplot(S2 ~ F2 | F1 + F3,
data=df1, as.table=TRUE, ylim=c(-10,10),
panel = function(x,y){
panel.barchart(x,y,horizontal=FALSE, origin=0,
col=df1$barcols ) } )
useOuterStrips(ctp)
# Any help you can provide would be greatly appreciated.
# Thank you!
# nathan.pelleg...@gmail.com
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
