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Re: Missing data and MPFITFUN [message #50905]

Tue, 24 October 2006 06:51

googlegroups
Messages: 6
Registered: February 2006

Junior Member

Craig Markwardt wrote:

> Remove the NaNs, include zero-weights, and
> you should be fine.

Does the calculation of the covariance matrix take into account the
weighting matrix?

I have missing data points in an array, and so I've filled those data
points with zeros, and then created a WEIGHTS matrix which identifies
those zeros - to be ignored in the fit.

I don't want my use of zeros instead of missing data to contaminate my
results.

Thanks
Dave Higgins

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[Message index]

		Re: Missing data and MPFITFUN By: googlegroups on Tue, 24 October 2006 06:51
		Re: Missing data and MPFITFUN By: David Fanning on Mon, 23 October 2006 07:54
		Re: Missing data and MPFITFUN By: Craig Markwardt on Mon, 23 October 2006 07:44
		Re: Missing data and MPFITFUN By: David Fanning on Mon, 23 October 2006 07:20
		Re: Missing data and MPFITFUN By: googlegroups on Mon, 23 October 2006 06:57
		Re: Missing data and MPFITFUN By: Allan Whiteford on Mon, 23 October 2006 04:09
		Re: Missing data and MPFITFUN By: Craig Markwardt on Sat, 28 October 2006 11:57

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