[Kst] [Bug 224225] 'fit linear weighted' plugin produces different results

Andrew Walker arwalker at sumusltd.com
Mon Jan 25 23:37:28 CET 2010


Andrew Walker <arwalker at sumusltd.com> changed:

           What    |Removed                     |Added
             Status|UNCONFIRMED                 |NEW
                 CC|                            |arwalker at sumusltd.com
     Ever Confirmed|0                           |1

--- Comment #1 from Andrew Walker <arwalker sumusltd com>  2010-01-25 23:37:26 ---
For all weighted fits the expected input are x, y, and weight. Typically the
weight is 1/yError^2.

When using a weighted-fit-plugin directly it should be apparent to the user
that a weight (as opposed to error) is required.

However, this is not the case when fitting by right-clicking on a curve (with
y-errors already specified) and selecting a weighted fit. In that case the
weights field is automatically set to the yError values and also disabled.

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