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Re: Fitting a Gaussian to an "unleveled" histogram: Interpreting the width [message #90393 is a reply to message #90255]

Fri, 27 February 2015 12:25

Maryam
Messages: 16
Registered: July 2012

Junior Member

Hello Craig,

Thanks for your reply. It is actually not an absorption line in a spectrum that I am trying to fit the Gaussian to. It is just the distribution of asteroids in the asteroid belt. I am trying to measure the width of the gap caused by the planet's (Jupiter's) gravitational perturbation; and the gap has somewhat of a Gaussian-looking shape, except that it is higher at one end than the other. IDL's mpfitfun fits it nicely but I want to know how it determines the amplitude. I tried normalizing the histogram once to the lower end and once to the higher end and then made the fit to see which amplitude it is that IDL is using, but it is neither one of those! The fit works, it is just the interpretation of the parameters that I am confused about!

Maryam

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[Message index]

		Fitting a Gaussian to an "unleveled" histogram: Interpreting the width By: Maryam on Wed, 11 February 2015 16:52
		Re: Fitting a Gaussian to an "unleveled" histogram: Interpreting the width By: Craig Markwardt on Sat, 14 February 2015 15:06
		Re: Fitting a Gaussian to an "unleveled" histogram: Interpreting the width By: Maryam on Fri, 27 February 2015 12:25

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