Polynomial plotting of my original curve

[pengxin]

Hi 

I am trying to re-plot my original curve with a best fitting curve. I am using a 3rd order polynomial to do this. However, the output of the fitting is in numeric and not a graph. I could not identify which part of my VI is giving the problem. Therefore, do i use the coefficient to re-plot my graph or using the best polynomial fit is enough to plot together with my original curve.

My intention is that the next step i will subtract the  value of the re-plot curve with the original curve. 

I am using LabView 8.6.1 

Thank you for helping out

Cheers 

[Henrik_Volkers]

The Curve Fitting express vi will output  dynamic data. Otherwise use the convert to dynamic data signal