Curve fitting problem: simultaneously fitting two datasets to two different model functions with shared parameters

[FrankWest]

Hello! As stated above, I have the following problem: I have 2 sets (different systems) of measurement data (Voltages measured as functions of applied frequency). I would like to make curve fits with Levenber-Marquardt-method to both datasets (the datasets have the same x-values = frequencies), fitting the 2 datasets to their own separate model functions. However, the different model functions should have same values for the shared parameters (this prevents me from doing 2 totally separate curve fittings).

I have LabVIEW version 7.1, if anybody could help me with the problem, I would appreciate it very much. Thank you!

[mriwa]

Hello, can someone help me how ta animate an interface in labview(i don't know if it is a sequence of pictures or using vedeo or what) Please help me ,i need it as soon as possible

[Make_Nguyen]

Hello!

I don't think that there is such feature in LabVIEW. Why do you need animation in LabVIEW? LabVIEW is used for virtual instrumentation. Do you want to be able to play video, power point slides or what? However, they are not working within LabVIEW. You can try to use some activeX components but I think it is better if you could find another animation editor like flash player or whatever. You can't use LabVIEW with such things. Or did I missed your question?

BR,

Make Nguyen

NI Finland Technical Support.

[Make_Nguyen]

Would you like to try this:

http://forums.ni.com/t5/LabVIEW/levenberg-Marquardt/td-p/668782

http://zone.ni.com/reference/en-XX/help/371361G-01/gmath/nonlinear_curve_fit/

http://digital.ni.com/public.nsf/allkb/BACF6FDF1B40993686256CC300657BA4

With LV 7.1, I don't know if we have a such feature with that version. Please check out for the latest LV versions.

BR,

Make Nguyen

NI Finland Technical Support

[johnsold]

FrankWest,

It appears that your thread has been hijacked.

Can you provide more details, please? What is the form of the equations of the models? Which parameters are common?  Can you post a typical dataset?

Lynn