R help - Jan 2008 - Bug with hist() ?

Hi,

Is this a bug from hist() ? The total density is greater than 1.
> test
 [1]  0.05077802 -0.50585520 -0.98053648 -0.35513059  0.86767129  0.61736097
 [7]  0.14264062  0.26243841 -0.41477782  0.64172618  0.87230953 -0.62570629
[13]  0.43596467 -0.93214106 -0.26781599
> h <- hist(test, freq = FALSE, main="Histogram of correlation",
ylab "Frequency", xlab = "Correlation", ylim =c(0.0, 1.0))
> h$breaks
[1] -1.0 -0.5  0.0  0.5  1.0
> h$density
[1] 0.5333332 0.4000000 0.5333333 0.5333333
> h$counts
[1] 4 3 4 4


Thanks
Stanley

	[[alternative HTML version deleted]]

>>>>> "NS" == Ng Stanley <stanleyngkl at
gmail.com>
>>>>>     on Thu, 31 Jan 2008 16:56:26 +0800 writes:
    NS> Hi,
    NS> Is this a bug from hist() ? The total density is greater than 1.

no, the bug is in your thinking...

Hint:   2 * 1/2 = 1

    >> test
    NS> [1]  0.05077802 -0.50585520 -0.98053648 -0.35513059  0.86767129 
0.61736097
    NS> [7]  0.14264062  0.26243841 -0.41477782  0.64172618  0.87230953
-0.62570629
    NS> [13]  0.43596467 -0.93214106 -0.26781599

    >> h <- hist(test, freq = FALSE, main="Histogram of
correlation", ylab     NS> "Frequency", xlab =
"Correlation", ylim =c(0.0, 1.0))
    >> h$breaks
    NS> [1] -1.0 -0.5  0.0  0.5  1.0
    >> h$density
    NS> [1] 0.5333332 0.4000000 0.5333333 0.5333333
    >> h$counts
    NS> [1] 4 3 4 4


    NS> Thanks
    NS> Stanley

    NS> [[alternative HTML version deleted]]

    NS> ______________________________________________
    NS> R-help at r-project.org mailing list
    NS> https://stat.ethz.ch/mailman/listinfo/r-help
    NS> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
    NS> and provide commented, minimal, self-contained, reproducible code.