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Re: Finding peak with cgHistoplot and bin confusion [message #87113 is a reply to message #87112]

Wed, 08 January 2014 06:33

rjp23
Messages: 97
Registered: June 2010

Member

On Wednesday, January 8, 2014 1:59:29 PM UTC, David Fanning wrote:
>
> I would do something like this:
>
>
>
> cgHistoplot, data, binsize=100, xrange=[0, 8000], HistData=d
>
> maxValue = Max(d, binNumber)
>

Hi David,

Sorry I don't think I explained very well. What you've posted there is just the equivalent of find=where(histdata EQ max(histdata)) isn't it?

What is causing me trouble is then using the returned bin subscript to get the correct bin value.

I think my problem is that I assumed that the first bin was at the bottom of my xrange but it's actually at the bottom of my data range (I think?).

If I do this it looks like it works to get to the middle of the bin in which the distribution peaks:

peak=omin+binsize*find+binsize/2.

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[Message index]

		Finding peak with cgHistoplot and bin confusion By: rjp23 on Wed, 08 January 2014 05:39
		Re: Finding peak with cgHistoplot and bin confusion By: David Fanning on Wed, 08 January 2014 05:59
		Re: Finding peak with cgHistoplot and bin confusion By: rjp23 on Wed, 08 January 2014 06:33
		Re: Finding peak with cgHistoplot and bin confusion By: Phillip Bitzer on Wed, 08 January 2014 09:09

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