R help - Dec 2010 - how to use paste in function for expression?

Hi all,
######################################
dof=c(1,2,4,8,16,32)
Q5=matrix(rt(100,dof),100,6,T,dimnames=list(NULL,dof))
par(mfcol=c(2,6))
for (i in 1:6){
	dof2=dof[i]
	hist(Q5[,i],main=paste("t[",dof2,"]",sep=""))
	qqnorm(Q5[,i])
	qqline(Q5[,i])
}
######################################

In this loop, I want to use
expression(t[1])
expression(t[2])
expression(t[4])
...

in the histogram as main title

how do I use expression and paste correctly?

I have tried 
hist(Q5[,i],main=expression(paste("t[",dof2,"]",sep="")))
does not work

Thanks.

casper
-- 
View this message in context:
http://r.789695.n4.nabble.com/how-to-use-paste-in-function-for-expression-tp3093822p3093822.html
Sent from the R help mailing list archive at Nabble.com.

casperyc wrote:
> 
> ... Expression in lattice .... example
> 
>
hist(Q5[,i],main=expression(paste("t[",dof2,"]",sep="")))does
not work
> 
dof=c(1,2,4,8,16,32)
Q5=matrix(rt(100,dof),100,6,T,dimnames=list(NULL,dof))
par(mfcol=c(2,6))
for (i in 1:6){
        dof2=dof[i]
        hist(Q5[,i],main=bquote(t[.(dof2)]))
        qqnorm(Q5[,i])
        qqline(Q5[,i])
}

See
http://r-project.markmail.org/thread/ui3vztyvafyar76f


-- 
View this message in context:
http://r.789695.n4.nabble.com/how-to-use-paste-in-function-for-expression-tp3093822p3093835.html
Sent from the R help mailing list archive at Nabble.com.