curve fitting

[eksiemin]

Hello, it is a student from istanbul. I have a problem about curve fitting. I have two arrays with five elements in each and one of them decsribes the x axiz and the other one describes y. so as you can guess, i have five different points and i want to apply lineer fit to them. I almost checked all the examples in labview library but unfortunately havent found a solution for my application. I hope someone has an advice about it.

King Regards,

Emin Ekşi

[Graziano]

Hi!
   Have you looked under the function palette --> Analyze --> Mathematics --> curve fitting ?   I actually don't know if it is a separate plugin, I have Developer suite 7.1, and I have these functions on my function palette.

   Anyway, if you don't have it, you'll have to implement manually a linear fit or interpolation from the formula.

graziano

[PhillipBrooks]

The curve fitting functions are not part of the base package of LabVIEW.

Curve Fitting VIs help page

[Graziano]

Hi,
   if you don't have it, you may give a look at "numerical recipes in C", ch 15-2.  It is a good starting point for implementing algorithms, without going too deep in theory behind them.  the book is freely available online.

graziano

[DSPmchen]

Also there is a new curve fitting white paper on ni.com, talking about some curve fitting concept.

https://www.ni.com/en/shop/labview/overview-of-curve-fitting-models-and-methods-in-labview.html

Hope this helps.

[Graziano]

Nice WP!