R help - Jun 2009 - xyplot: subscripts, groups and subset

Hi,

 

I'm running the following code to produce lattice plots of microfibril
angle versus ring number in Scots pine. There are 12 trees and 5 sample
positions ("Position") in each tree:

 

xyplot(MFA ~ RN | Tree, data = MFA.data, 

       groups = Position, subscripts=TRUE,

       auto.key=list(space = "top", points = FALSE, lines = TRUE,
reverse.rows=TRUE, title="Disc Position (1=1.3m)", cex=0.5,

       text=paste("Disc:", levels(MFA.data$Position))),

       xlab = "Ring Number", ylab = "MFA",

       panel = function(x, y, subscripts, groups) {

           panel.grid(h=-1, v= 2)

           panel.xyplot(x, y, subscripts=subscripts, groups=groups,
type="a")                 

           panel.superpose(x=x, y=y, groups=Position,
subscripts=subscripts,lty=8, cex=0.25)

        

           

           })

 

 

But it is giving me the error message:

 
>         })
Error: unexpected '}' in "           }"

 

 

This code has worked for me previously but now will not output the
plots. Does anyone know what's going on here?

 

Thanks in advance,

 

Dave

 

 

Dave Auty MSc
PhD Student
Forest Research NRS
Roslin
Midlothian
EH25 9SY

Tel: +44(0)131 445 6936
Fax: +44(0)131 445 5124
Mob: +44(0)7896 685895
www.forestresearch.gov.uk/timberproperties  

 



+++++ The Forestry Commission's computer systems may be monitored and
communications carried out on them recorded, to secure the effective operation
of the system and for other lawful purposes. +++++

The original of this email was scanned for viruses by the Government Secure
Intranet (GSi) virus scanning service supplied exclusively by Cable &
Wireless in partnership with MessageLabs.

On leaving the GSi this email was certified virus-free
	[[alternative HTML version deleted]]

Auty, Dave <dave.auty <at> forestry.gsi.gov.uk> writes:
> 
> I'm running the following code to produce lattice plots of microfibril
> angle versus ring number in Scots pine. There are 12 trees and 5 sample
> positions ("Position") in each tree:
> 
> xyplot(MFA ~ RN | Tree, data = MFA.data, 
> 
>        groups = Position, subscripts=TRUE,
....
> subscripts=subscripts,lty=8, cex=0.25)
> 
>            })
> 
> But it is giving me the error message:
> 
> >         })
> 
> Error: unexpected '}' in "           }"
The code syntactically works for me, but you have posted it out of
context, so problem might be BEFORE the posted sample. It is also possible
that some unprinting code might have interfered, which is difficult to find.

So if there is really no problem above the xyplot(), try to explicitly 
retype the  whole function call.

Dieter