       Re: histograms of identical distribution is different. maybe binnumber is the problem?

• To: mathgroup at smc.vnet.net
• Subject: [mg51386] Re: [mg51298] histograms of identical distribution is different. maybe binnumber is the problem?
• From: Bob Hanlon <hanlonr at cox.net>
• Date: Fri, 15 Oct 2004 02:48:12 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

```Use the HistogramScale option

Needs["Statistics`NormalDistribution`"];

Needs["Graphics`Graphics`"];

Do[
normdata=RandomArray[NormalDistribution[],10000];
normdata2=RandomArray[NormalDistribution[],10000];
DisplayTogether[
Histogram[normdata,BarEdgeStyle->Hue,
BarStyle->{}, HistogramScale->1],
Histogram[normdata2,BarStyle->{},
HistogramScale->1]],
{i,10}]

Bob Hanlon

>
> From: sean kim <sean_incali at yahoo.com>
To: mathgroup at smc.vnet.net
> Date: 2004/10/14 Thu AM 06:35:12 EDT
> Subject: [mg51386] [mg51298] histograms of identical distribution is different. maybe
binnumber is the problem?
>
> i found the code attached below in the archives. it
> will display two histograms without shading in one
> graph.
>
> note both histograms are generated exactly the same
> way using exactly the same number of sample points.
>
> for me, at least, it will show a pattern of a few of
> the distributions having a lower number of points
>
> what causes this? I think it has to do with the way
> histograms are made? is there a way to control bin
> width or number in a convenient way?
>
> like..
>
> binwidth-> (numberof points)/(whatever bin number you
> want to use)
>
> Do[
> normdata = RandomArray[NormalDistribution[], 10000];
> h1 = Histogram[normdata, BarEdgeStyle -> Hue,
> BarStyle -> {}, DisplayFunction -> Identity];
>
> normdata2 = RandomArray[NormalDistribution[], 10000];
> h2 = Histogram[normdata2, BarStyle -> {},
> DisplayFunction -> Identity];
>
> DisplayTogether[h1, h2],
>
> {i, 10}]
>
>
>
>
>
>
>
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