[R] Combining numeric vs numeric & numeric vs factor graphs into one ps/pdf file

[David Hugh-Jones]

Hi David

You probably want to write your own panel function and pass it into
xyplot(). Something like

mypanel <- function (x,y, groups, subscripts) {
  if (status[subscripts] == "pass") {
    panel.xyplot(H,CD)
  }
  else {
     panel.xyplot(site, CD)
  }
}

Check out the "groups" and "subscripts" arguments to xyplot.

cheers
Dave

On 03/05/05, Arenas, David R.  CIV NAVAIR DEPT <david.arenas at navy.mil> wrote:
> Dear R community,
>
> My previous email was incomplete because I used html format.  Here it is again and sorry for any inconvenience:
>
> xyplot (lattice) has been great in displaying tons of data for my research.  I have used the following two xyplot commands (with example dataframe) to create two separate postscript/pdf files with respect to the variable "acft" and subset "status":
>
> test.df <- data.frame(acft=factor(c("A","B","C","D")),
>                               status=factor(c("fail","pass","fail","pass")),
>                               site=factor(c("E1","E1","E2","E2")),
>                               CD=as.numeric(c(1,1,3,3)),
>                               H=as.numeric(c(80,NA,60,NA)))
>
> xyplot(H ~ CD | acft,
>           data=test.df,
>           subset=status=="fail",
>           layout=c(1,1) )
>
> xyplot(site ~ CD | acft,
>           data=test.df,
>           subset=status=="pass",
>           layout=c(1,1) )
>
>  I would like to combine all graphs into one file in alphabetical order of variable "acft".  The graphs would be one per page where in fact I use layout=c(1,1) for the nice and easily seen strip labels for "acft".  The problem I am having is combining x-y plots that are numeric vs numeric & numeric vs factor.  I have search the R-help archives and R-project references for an example to no avail.  I am thinking I may have to use something (lattice or not) like ...
>
> if any(test.df$Status=="fail")
> plot(H ~ CD)
> else
> plot(site ~ CD)
>
> with "for" in the beginning to loop through all data with respect to acft.  I need a hint on how to further this along.  I am using R.2.1.0 via Windows XP.
>
> Thank you for any help,
>
> D. Arenas
>
>         [[alternative HTML version deleted]]
>
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