Non-linear curve fitting for complex data

[BasilB]

Hello

I'm trying to do a non-linear curve fitting for complex data in LabView NXG 1.0. My model function is a transfer function of a measuring system and depends on 5 parameters, which I want to optimize.

In this forum post (https://forums.ni.com/t5/LabVIEW/Non-linear-curve-fitting-for-complex-data/td-p/1016568) I found VIs, that do such a non-linear curve fitting with complex data. But these VIs are createt with the "normal" LabView. I tried to convert these VIs to LabView NXG, but it doesn't work, because the used reference to the VI with the complex function doesn't work in LabView NXG. Is there an option to fix this problem?

I also don't found the used Levenberg-Marquardt-Curve-Fitting-VI in LabView NXG 1.0. Is there an equivalent VI for curve fitting in LabView NXG?

Thanks for you help

Basil

[cberlin · Accepted solution]

Hello,

Levenberg-Marquardt-Curve-Fitting-VI will be available in NXG 2.0. The release should be soon.

Best Regards,

Christian