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Re: sigma values of polyfit and svdfitr [message #83798 is a reply to message #83610]

Mon, 01 April 2013 21:58

gunvicsin11
Messages: 93
Registered: November 2012

Member

On Monday, March 18, 2013 11:56:09 AM UTC+5:30, gunvi...@gmail.com wrote:
> Hello everyone,
>
> Please let me know how to use the sigma values and returned in polyfit and svdfit to find the fitting error. Its very important for my work.
>
> Please help me out in this respect.
>
> thanking you in advance,
>
> sid

Hello sir,
Fitting error in the sense error caused only due to fitting and no other errors are considered, like instrumental error.
My problem is I get sigma values(it is the uncertainty in the polynomial coefficients) very high. So I dont know how to use it to get the fitting error. So I thought I would take (the observed value - fitted value) that will give the fitting error.
Am I right in doing this?
thanking you
sid

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[Message index]

		sigma values of polyfit and svdfitr By: gunvicsin11 on Sun, 17 March 2013 23:26
		Re: sigma values of polyfit and svdfitr By: Phillip Bitzer on Tue, 02 April 2013 15:18
		Re: sigma values of polyfit and svdfitr By: gunvicsin11 on Mon, 01 April 2013 21:58
		Re: sigma values of polyfit and svdfitr By: Andy Sayer on Mon, 01 April 2013 08:53
		Re: sigma values of polyfit and svdfitr By: gunvicsin11 on Sun, 31 March 2013 22:22

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