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Fitting histograms with other histograms [message #1708] Fri, 13 March 2009 13:30 Go to previous message
Messages: 33
Registered: March 2007
Location: University of Regina
What I'm trying to do is the following:

I have a data set (histogram) that is the sum of three separate distributions (also histograms).

I want to perform a chi-squared minimization to optimize the coefficients a,b,c in:

chi-squared = (sum over bins "i")[DataHisto_i - a*(histo1_i) - b*(histo2_i) - c*(histo3_i)]/(sigma_i)

Does anybody have an example for how to do discrete fits between histograms?
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