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 force the fit through the point (0;0)

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tkay84 Posted - 08/12/2008 : 10:27:11 AM
Hi Im using the non Linear CUrve fit tool with the "Expreg1" regression.
Is there a way for force the graph to the point (0:0)? like in the linear regression by setting the intercept to 0?
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greg Posted - 08/12/2008 : 1:46:15 PM
You will need to use weighting by a dataset. Fill the dataset with 1 except for the point you want the fit curve to go through which can be set very small - say 1E-6 (definitely NOT zero, however). Set the column type as error and plot.

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