[R] Boxplot BUT with Mean, SD, Max & Min ?

William Revelle lists at revelle.net
Mon Sep 26 20:23:44 CEST 2011

Dear Phil,
    An alternative solution is to draw a regular Tukey Box Plot but 
overlay the means +/- 1 sd:



At 3:45 AM +1000 9/27/11, Philip Rhoades wrote:
>Gabor, Bill,
>On 2011-09-27 02:51, Gabor Grothendieck wrote:
>>On Mon, Sep 26, 2011 at 12:11 PM, Philip Rhoades <phil at pricom.com.au> wrote:
>>>On 2011-09-27 00:35, Gabor Grothendieck wrote:
>>>>On Mon, Sep 26, 2011 at 9:56 AM, Philip Rhoades <phil at pricom.com.au>
>>>>>It appears that there is no way of getting Boxplots to plot using Mean,
>>>>>Max & Min - is there something else that would do what I want?  I
>>>>>find it . .
>>>>Try replacing the stats component of boxplot's output with your
>>>>desired statistics and then feeding that into the lower level bxp
>>>>function to do the graphics:
>>>>bp <- boxplot(Nile, plot = FALSE)
>>>>bp$stats <- matrix(c(min(Nile), mean(Nile) + c(-1, 0, 1) * sd(Nile),
>>>Thanks for that!  What is the syntax when there is more than one set of data
>>>(ie a two dimensional vector)?  I tried messing around with stuff like:
>>>  mean(Nile[,2] etc
>>>but I get subscript out of range errors  . .
>>Bill's example shows  how to do it with a list of numeric vectors.
>>Here is another example using the built in anscombe and making use of
>>my prior code, Bill's and Vining's:
>>bp <- boxplot(anscombe, plot = FALSE)
>>bp$stats <- sapply(anscombe, function(x) c(min(x), mean(x) + c(-1, 0,
>>1) * sd(x), max(x)))
>>bxp(bp, outline = FALSE)
>Interesting! - I've learnt something about anscombe and sapply and 
>other stuff (thanks again!) but I think I mis-spoke before.  I think 
>what I want is a list of numeric vectors but when I created tarr:
>   tarr <- array( dim = c( 5,3 ), c( 1,2,3,4,5,2,3,4,5,6,3,4,5,6,7 ) )
>I couldn't get it to work with the original code . . now I have had 
>a closer look at Bill's code . .
>On the original question though, why isn't there something "off the 
>shelf" that will do what I want?  Surely, a "boxplot" using mean, 
>SD, max and min would be a common enough need to justify it?
>Philip Rhoades
>GPO Box 3411
>Sydney NSW	2001
>E-mail:  phil at pricom.com.au
>R-help at r-project.org mailing list
>PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.

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