If I do
b <- rnorm(4332)
hist(b,probability=T,breaks=30,col='lightblue',ylim=c(0,1))
rug(b)
The plot looks entirely reasonable.
As far as being different from SAS, perhaps SAS and R use different
breakpoints, that is, different boundaries between the histogram bars.
-Don
At 11:58 AM -0600 1/13/10, Yi Du wrote:
Hi,
I use a vector of data to draw the histogram, but it is different from the
graph by SAS. Can you check it for me please?
b is a column vector of 4332
hist(b,probability=T,breaks=30,col='lightblue',ylim=c(0,1))
rug(b)
When I used rug, I find the records are smaller than 4332. I don't know
where I did wrong.
Thanks.
--
Yi Du
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--
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA
925-423-1062
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