R help - Apr 2012 - Hmisc::xYplot - text on xaxis

Hello, I'm making a simple plot using xYplot in the Hmisc library and having
problems with labeling the values on the x-axis. Using the reproducible example
below, how can I have the text (jan, feb,mar, etc.) in place of 1:12.

Thanks, AB


x <- c(seq(0,0.5,by=0.1),seq(0.5,0,by=-0.1))
ci <- rnorm(12,0,sd=0.1)
xupper <- x + ci
xlower <- x - ci
mo.fac <-  c("jan", "feb", "mar",
"apr", "may", "jun", "jul",
         "aug", "sep", "oct", "nov",
"dec")
foo <- data.frame(mo=1:12,mo.fac,x,xupper,xlower)

# example 1: works but I want text (jan, feb, etc.) and not numbers on the x
axis
xYplot(Cbind(x,xlower,xupper) ~ mo,data=foo)

# example 2: doesn't work
xYplot(Cbind(x,xlower,xupper) ~ mo.fac,data=foo)

On 2012-04-26 13:47, Andy Bunn wrote:
> Hello, I'm making a simple plot using xYplot in the Hmisc library and
having problems with labeling the values on the x-axis. Using the reproducible
example below, how can I have the text (jan, feb,mar, etc.) in place of 1:12.
>
> Thanks, AB
>
>
> x<- c(seq(0,0.5,by=0.1),seq(0.5,0,by=-0.1))
> ci<- rnorm(12,0,sd=0.1)
> xupper<- x + ci
> xlower<- x - ci
> mo.fac<-  c("jan", "feb", "mar",
"apr", "may", "jun", "jul",
>           "aug", "sep", "oct",
"nov", "dec")
> foo<- data.frame(mo=1:12,mo.fac,x,xupper,xlower)
>
> # example 1: works but I want text (jan, feb, etc.) and not numbers on the
x axis
> xYplot(Cbind(x,xlower,xupper) ~ mo,data=foo)
Just set the 'scales=' argument, e.g.

   xYplot(Cbind(x,xlower,xupper) ~ mo,data=foo,
          scales = list(at = 1:12, labels = month.abb))

Peter Ehlers
>
> # example 2: doesn't work
> xYplot(Cbind(x,xlower,xupper) ~ mo.fac,data=foo)
>