[R] Ask for histogram

[Don MacQueen]

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
>
>	[[alternative HTML version deleted]]
>
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-- 
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA
925-423-1062