| T O P I C R E V I E W |
| Breadfan |
Posted - 07/11/2018 : 12:56:09 PM
Origin Ver. and Service Release (Select Help-->About Origin): 8.5.1 SR2 b315
Operating System: win7
Hello there,
im not really a professional in origin programing, and i have a problem fitting some data. The original function is about percolation:
log(k) = log(k0)+t*log(x+x0)
where
k is the conductivity of the komposit material
k0 is the conductivity of the pure polymer matrix
t is the parameter i want to determine
x is the mass ratio of condutive particles in the polymer
x0 is the critical percolation value i want to determine
I tried several equations in "non linear fitting", but I either have problemes with "not valid equation" if I enter "log(k)=..." or nothing is calculated by origin.
So my questio is: what do I have to do to get a fit? |
| 1 L A T E S T R E P L I E S (Newest First) |
| YimingChen |
Posted - 07/11/2018 : 1:47:15 PM
Hi,
It seems you need to use implicit function to fit the curve. Please check this page:
https://www.originlab.com/doc/Tutorials/ImplicitFit-3Var
Thanks,
Yiming |
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