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Non-Linear Fitting VI Issues - LV 2017

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No matter what I try after making a VI to define f(x, a) for my nonlinear fit, for some reason I keep getting a class mismatch between the reference and the input on the Nonlinear Curve Fit VI. I was wondering if this was an issue with my VI even though the connections all seem to be correct.

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Accepted by topic author tmbates12

You changed the output connector for the derivatives. Even if not connected, it needs to be a 2D array (you made it a 1D array for some reason).




If you still have problems, feel free to attach the caller too.


Also, if you use a static reference, make sure to make it strictly typed.

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