| T O P I C R E V I E W |
| franhofer |
Posted - 08/03/2010 : 05:02:05 AM
y = A1*exp((x-y*F)/v)+ A2*exp((x-y*F)/(2*v))+(x-y*F)/R
I have been trying to fit this function using the nonlinear curve fitting.
v is fixed. Indpt variable is x and dependent variable is y.
The variable parameters are F, A1, A2 and R. However, my value of F does not iterate at all and it always churns out the same value whenever I complete the FitNL. The other values of A1, A2 and R are good though. Is there a problem with the way I write the function.
My function form of Y-script or equation works.
|
| 2 L A T E S T R E P L I E S (Newest First) |
| franhofer |
Posted - 08/04/2010 : 04:35:25 AM
I just solved this problem! Thanks. It was due to some wrong setting. |
| larry_lan |
Posted - 08/03/2010 : 09:26:33 AM
Hi:
What's your Origin version? How about sending us some data to try? And please also tell us what's the initial values and your Origin serial number in your email. I don't see any different to simulate an Origin C and Y-Script function with the same function form. You can also send us the FDF files if you like.
Thanks
Larry
OriginLab Technical Services |
