[R] using hist() with tapply()

[Kjetil Brinchmann Halvorsen]

Schwarz,Paul wrote:

>Hi,
>
>I've been passing the hist() function to tapply() to quickly generate histograms based on the list of factors supplied to tapply().  However, I have not figured out how to generate titles for each of the histograms, which paste in the unique values of the list factors as part of the histogram title.  I'm hoping that someone can tell me how to do this.
>
>Thanks for your time and consideration,
>
>-Paul Schwarz
>
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>
>  
>
I can't see it with talpply, but mapply and split works:

test <- rnorm(1000)
fac <- factor( rep(1:5, 200))
par(mfrow=c(2,3))
mapply(hist, split(test, fac), main=levels(fac))


-- 

Kjetil Halvorsen.

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