[R] Bug with hist() ?

[Martin Maechler]

>>>>> "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]]

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