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Possible bug?

From: mrodrig
Subject: Possible bug?
Date: Fri, 9 Feb 2018 05:06:08 -0700 (MST)


I am trying to make a data fitting using the leasqr function. In the
attachment you can find the data and the function that I am trying to adjust
and the adjustment parameters.

When plotting x vs y and the F function with the par parameters, initially
it seems reasonable.

When I make the adjustment I get the following result

error: weighted residuals are not real
error: called from
     __lm_svd__ at line 467 column 11
I searched and there are other users that something similar has happened to

Somebody could help me


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