R help - Dec 2009 - How to scale a histogram

If I want to scale a histogram ie multiply by a constant how would I do
this? Thanks

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On 12/10/2009 04:01 PM, terry johnson wrote:
> If I want to scale a histogram ie multiply by a constant how would I do
> this? Thanks
>
> 	[[alternative HTML version deleted]]
>
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> PLEASE do read the posting guide
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>   
Without further details I would guess:
suppose
tmp <- runif(100,0,100)
hist(tmp)

then hist(tmp*.01) will rescale the range from 0 to 100 to 0 to 1

Stephan

On 11/12/2009, at 4:01 AM, terry johnson wrote:
> If I want to scale a histogram ie multiply by a constant how would  
> I do
> this? Thanks
This question is pretty vague.  Please read the posting guide.

If you want to rescale the y-axis you could do something like:

 > set.seed(333) # Only half evil.
 > x <- rnorm(300)
 > h <- hist(x,plot=FALSE)
 > h$counts <- h$counts*42
 > plot(h,ylab="Rescaled counts")

If you want to rescale the x-axis, see the posting by Stephan Devriese.

	cheers,

		Rolf Turner


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