R help - Jul 2005 - Main Title for multiple charts

Hi R !

I have the following set up:
>par(mfrow=c(2,2))
>curve(dexp,from=0,to=5)
>hist(z1,main="Size 5")
>hist(z2,main="Size 15")
>hist(z3,main="Size 30")
>
I would like to put a title at the very top of the page that ties the theme 
of all the charts
together.  How would this be done, please?

Thanks in advance!

Laura Holt
mailto: lauraholt_983 at hotmail.com

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Laura Holt wrote:
> Hi R !
> 
> I have the following set up:
> 
>> par(mfrow=c(2,2))
>> curve(dexp,from=0,to=5)
>> hist(z1,main="Size 5")
>> hist(z2,main="Size 15")
>> hist(z3,main="Size 30")
>>
> 
> I would like to put a title at the very top of the page that ties the 
> theme of all the charts
> together.  How would this be done, please?
> 

How about this:

z1 <- rexp(100)
z2 <- rexp(100)
z3 <- rexp(100)
par(mfrow=c(2,2),oma = c(0, 0, 3, 0))
curve(dexp,from=0,to=5)
hist(z1,main="Size 5")
hist(z2,main="Size 15")
hist(z3,main="Size 30")
mtext("Densities", outer = TRUE, cex = 2)


--sundar