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Function fitting in IDL [message #90441] Mon, 02 March 2015 17:09 Go to next message
rchandra.ntl is currently offline  rchandra.ntl
Messages: 1
Registered: March 2015
Junior Member
Hi


I want to fit different functions ( like as second, third, fourth order) in my data. I also want to calculate the goodness of fit ie chisq value. Can you suggest how to do it in IDL.

Thanks and best regards,

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Re: Function fitting in IDL [message #90451 is a reply to message #90441] Tue, 03 March 2015 04:43 Go to previous message
Craig Markwardt is currently offline  Craig Markwardt
Messages: 1869
Registered: November 1996
Senior Member
On Monday, March 2, 2015 at 8:09:08 PM UTC-5, rchand...@gmail.com wrote:

> I want to fit different functions ( like as second, third, fourth order) in my data. I also want to calculate the goodness of fit ie chisq value. Can you suggest how to do it in IDL.
>

Why not start with POLY_FIT?

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