| T O P I C R E V I E W |
| kanzhipeng |
Posted - 05/31/2017 : 4:28:23 PM
Origin Ver. and Service Release (Select Help-->About Origin):
Operating System:
Hello all, I want to fit experimental data based on following equation:
where e, A, and d are constants, r (gama) is the fitting parameter. How to fit this with origin? Thanks in advance.
data:
td Qpre Qcoll
1E-8 1.029113E-11 7.372707E-11
1.047129E-8 1.062333E-11 7.313067E-11
1.096478E-8 1.117687E-11 7.12058E-11
1.148154E-8 1.14401E-11 7.228987E-11
1.202264E-8 1.208482E-11 7.139323E-11
1.258925E-8 1.260499E-11 7.079397E-11
1.318257E-8 1.310031E-11 7.044546E-11
1.380384E-8 1.336079E-11 6.981954E-11
1.44544E-8 1.389263E-11 6.92202E-11
1.513561E-8 1.469459E-11 6.916948E-11
1.584893E-8 1.516672E-11 6.871055E-11
1.659587E-8 1.576547E-11 6.757622E-11
1.737801E-8 1.621484E-11 6.671775E-11
1.819701E-8 1.668575E-11 6.702031E-11
1.905461E-8 1.734815E-11 6.485645E-11
1.995262E-8 1.801204E-11 6.469914E-11
2.089296E-8 1.864987E-11 6.346055E-11
2.187762E-8 1.90917E-11 6.322876E-11
2.290868E-8 2.00037E-11 6.249604E-11
2.398833E-8 2.053235E-11 6.138248E-11
2.511886E-8 2.13325E-11 6.136034E-11
2.630268E-8 2.210953E-11 5.967715E-11
2.754229E-8 2.288332E-11 5.920008E-11
2.884032E-8 2.353838E-11 5.919545E-11
3.019952E-8 2.392712E-11 5.788643E-11
3.162278E-8 2.460599E-11 5.752264E-11
3.311311E-8 2.563254E-11 5.591018E-11
3.467369E-8 2.632125E-11 5.528915E-11
3.630781E-8 2.697333E-11 5.415331E-11
3.801894E-8 2.790204E-11 5.308508E-11
3.981072E-8 2.840655E-11 5.214836E-11
4.168694E-8 2.892832E-11 5.18637E-11
4.365158E-8 2.997757E-11 5.078954E-11
4.570882E-8 3.043194E-11 5.018665E-11
4.786301E-8 3.098582E-11 4.83115E-11
5.011872E-8 3.195799E-11 4.748554E-11
5.248075E-8 3.271387E-11 4.732292E-11
5.495409E-8 3.356967E-11 4.735743E-11
5.754399E-8 3.415622E-11 4.599268E-11
6.025596E-8 3.485879E-11 4.480208E-11
6.309573E-8 3.58387E-11 4.419262E-11
6.606934E-8 3.628062E-11 4.172071E-11
6.91831E-8 3.710602E-11 4.204108E-11
7.24436E-8 3.785204E-11 4.111704E-11
7.585776E-8 3.830761E-11 3.999484E-11
7.943282E-8 3.895E-11 3.882326E-11
8.317638E-8 3.967076E-11 3.809665E-11
8.709636E-8 4.074093E-11 3.894079E-11
9.120108E-8 4.163697E-11 3.744449E-11
9.549926E-8 4.235861E-11 3.683224E-11
1E-7 4.258413E-11 3.529595E-11
1.047129E-7 4.30589E-11 3.479578E-11
1.096478E-7 4.393344E-11 3.385706E-11
1.148154E-7 4.482553E-11 3.309694E-11
1.202264E-7 4.51211E-11 3.240391E-11
1.258925E-7 4.559888E-11 3.172512E-11
1.318257E-7 4.627238E-11 3.133895E-11
1.380384E-7 4.652221E-11 3.011645E-11
1.44544E-7 4.715263E-11 2.894555E-11
1.513561E-7 4.77351E-11 2.902339E-11
1.584893E-7 4.847374E-11 2.800089E-11
1.659587E-7 4.885512E-11 2.760791E-11
1.737801E-7 4.899688E-11 2.691577E-11
1.819701E-7 4.982674E-11 2.62831E-11
1.905461E-7 5.026228E-11 2.536569E-11
1.995262E-7 5.08568E-11 2.472331E-11
2.089296E-7 5.173821E-11 2.511633E-11
2.187762E-7 5.199488E-11 2.395881E-11
2.290868E-7 5.220498E-11 2.338464E-11
2.398833E-7 5.256937E-11 2.302628E-11
2.511886E-7 5.315605E-11 2.180095E-11
2.630268E-7 5.340712E-11 2.187772E-11
2.754229E-7 5.421675E-11 2.138282E-11
2.884032E-7 5.474222E-11 2.084176E-11
3.019952E-7 5.490573E-11 2.063249E-11
3.162278E-7 5.517836E-11 1.953465E-11
3.311311E-7 5.507495E-11 1.895554E-11
3.467369E-7 5.560459E-11 1.821947E-11
3.630781E-7 5.618174E-11 1.852503E-11
3.801894E-7 5.663412E-11 1.750688E-11
3.981072E-7 5.714548E-11 1.681206E-11
4.168694E-7 5.782122E-11 1.711631E-11
4.365158E-7 5.811429E-11 1.650722E-11
4.570882E-7 5.856874E-11 1.680813E-11
4.786301E-7 5.87147E-11 1.550976E-11
5.011872E-7 5.927809E-11 1.502435E-11
5.248075E-7 5.958994E-11 1.453312E-11
5.495409E-7 6.003046E-11 1.449957E-11
5.754399E-7 5.96246E-11 1.424461E-11
6.025596E-7 5.978649E-11 1.325153E-11
6.309573E-7 6.019682E-11 1.304472E-11
6.606934E-7 6.078972E-11 1.283885E-11 |
| 2 L A T E S T R E P L I E S (Newest First) |
| Hideo Fujii |
Posted - 05/31/2017 : 5:43:50 PM
Hi kanzhipeng,
Just an additional info... it seems it's a y'=a*y type differential equation.
You can also read the article:
http://www.originlab.com/doc/Tutorials/Fitting-Ordinary-Differential-Equation
--Hideo Fujii
OriginLab |
| arstern |
Posted - 05/31/2017 : 4:47:43 PM
Hi,
See if this link helps http://www.originlab.com/doc/Tutorials/Fitting-NLFit-Basic.
You will have to use the Fitting Function Builder to input your equation and define your constants, variables, and parameters. What are you defining as your Dependent and independent variables?
Thanks,
Aviel
OriginLab |
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