[Ifeffit] Difference File Fits

Bruce Ravel ravel at phys.washington.edu
Wed Mar 19 07:58:37 CST 2003

On Tuesday 18 March 2003 12:41 pm, Matt Newville wrote:

> At the end of the analysis, it's usually best to do a full fit
> (that is, with all parameters floating) to understand the
> correlations between variables.  Subtracting off a shell makes
> that impossible, so whiile analyzing differences has definite
> advantages, it should be done with caution.
> It is very difficult to subtract uncertainty.

A darn good point!


 Bruce Ravel  ----------------------------------- ravel at phys.washington.edu
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