The data is of two forms, ie one numeric and another ordinal ie 1.5 and 
<.5.  The X Value is a factor.

I'm trying to create a lattice conditioned plot with the following 
characteristics:

1) The plot is conditioned using the form (Conductivity~Day|Valve)
2) The plot should use a barplot for the ordinal (<.5) and dots for the 
numeric (1.5)
3) A line should be created specifying a limit (ie 0.5)

What I would like is the bar on Day 3 to be a dot at 0.5 (a red one would 
be even better)


I have the following working:

data <- 
data.frame(Conductivity=c(.24,.24,.5),Day=as.factor(c(1,2,3)),Valve=as.factor(c("60-V-234","60-V-234","60-V-234")))

print(barchart(Conductivity~Day|Valve,
       data=data,
       horizontial=FALSE,
#       type="p",
       xlab=list(label="Day",cex=3),
       ylab=list(label=expression(paste("Endotoxin (EU/mL)")),cex=3),
       ylim=c(0,1),
#       index.cond=list(c(2,1)),
       scales=list(x=list(rot=90,cex=2),y=list(cex=2))
              ,panel=function (x,y,...) {
                panel.barchart(x,y,...)
                panel.abline(h=0.25,col="red")
              }
#       main="Stable Pressure for 70-DS-005 Protocol 02-634-02B"
              )
)



Any thoughts?  I know it's something simple, I just cannot see it...

Thanks in advance.


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