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Re: cgHistoplot -- input histogram results? [message #86336 is a reply to message #86326]

Mon, 28 October 2013 09:17

Phillip Bitzer
Messages: 223
Registered: June 2006

Senior Member

I have to do this before - basically, I fake the original data set, based on inputs from the original histogram. Basically, I replicate the middle of each bin to match the histogram value (to stay away from the razor's edge):

binSize = 5.0
minVal = 0.0
h=HISTOGRAM(data, BIN=binSize, MIN=minVal) ;original histogram

nData = TOTAL(h)
nHisto = N_ELEMENTS(h)

middleBins = FINDGEN(nHisto)*binSize/2+minVal

fakeData = FLTARR(nData)

FOR i=0, nHisto-1 DO BEGIN
IF h[i] EQ 0 THEN CONTINUE
IF i EQ 0 THEN startInd = 0 ELSE startInd = TOTAL(h[0:i-1])
stopInd = TOTAL(h[0:i])-1

fakeData[ startInd : stopInd ] = REPLICATE(middleBins[i], h[i])

ENDFOR

(There's plenty room for improvement in this code....not enough coffee yet :-) )

You could then throw fakeData at cgHistoplot. I've only had to do this a couple of times - so, the time penalty for duplicating the histogram calculation wasn't important (enough). I suppose as long as the data isn't too finely binned, it would work fine....

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[Message index]

		cgHistoplot -- input histogram results? By: Matthew Argall on Sun, 27 October 2013 10:15
		Re: cgHistoplot -- input histogram results? By: David Fanning on Sun, 27 October 2013 11:07
		Re: cgHistoplot -- input histogram results? By: David Fanning on Sun, 27 October 2013 11:10
		Re: cgHistoplot -- input histogram results? By: Phillip Bitzer on Mon, 28 October 2013 09:17

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