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Re: histogram [message #67697 is a reply to message #44556]

Wed, 12 August 2009 04:00

rinceboy
Messages: 5
Registered: March 2009

Junior Member

Won't including a max and min unrealisticaly skew the histogram by
introducing false data? e.g. the first dataset ranges between (-50:22)
and the second between (-70:24). By using teh same max and min, say
-70 and 24 then you're biasing both histograms

On Aug 11, 6:17 pm, David Fanning <n...@dfanning.com> wrote:
> rinceboy writes:
>> I'm using IDL to make and overplot histograms of temperature. I create
>> the first histogram from my first dataset and plot it. Then I overplot
>> another histogram from the second dataset. I use a common binsize of 5
>> degreesK for both. My problem is that the bin-bounds don't align e.g.
>> for my first histogram, say, a 5K bin is aligned between 20-25K,
>> however for the second dataset the 5K bin is aligned between 22-27K.
>
>> My question is: how to I have a common bin-alignment between the two
>> datasets?
>
> Set the MIN and MAX keywords on the two HISTOGRAM
> commands to the same values.
>
> Cheers,
>
> David
>
> --
> David Fanning, Ph.D.
> Coyote's Guide to IDL Programming (www.dfanning.com)
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Histogram By: James[1] on Tue, 28 June 2005 09:24
		Re: Histogram By: R.G. Stockwell on Fri, 01 July 2005 11:37
		Re: histogram By: rinceboy on Wed, 12 August 2009 07:12
		Re: histogram By: jameskuyper on Wed, 12 August 2009 06:15
		Re: histogram By: rinceboy on Wed, 12 August 2009 04:00
		Re: histogram By: David Fanning on Tue, 11 August 2009 10:17
		Re: histogram By: Maxwell Peck on Mon, 29 March 2010 03:08
		Re: Histogram By: David Grier on Mon, 11 October 2010 07:16
		Re: Histogram By: David Fanning on Mon, 11 October 2010 06:51
		Re: HISTOGRAM By: d.poreh on Wed, 23 January 2013 05:06
		Re: HISTOGRAM By: Helder Marchetto on Wed, 23 January 2013 03:44
		Re: HISTOGRAM By: Mats Löfdahl on Wed, 23 January 2013 03:26

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