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$\begingroup$ Rather than Normal[fit], it may be more natural to use fit[x] inside the plot. Also, I am not sure that there should be a negative sign in -data[[1, 1]]: shouldn't that be just data[[1, 1]]? $\endgroup$

MarcoB
– MarcoB

2020-06-02 15:33:08 +00:00
Commented Jun 2, 2020 at 15:33
$\begingroup$ @MarcoB Your are right Fit[x] look more natural here. For the Plot, I just specified the range explicitly but in this case it should be just data1[[1,1]] $\endgroup$

fred85
– fred85

2020-06-02 16:11:33 +00:00
Commented Jun 2, 2020 at 16:11
$\begingroup$ @ UIrich Neumann I had tried adding frequency but the fit wasn't that good. Here I just want an analytical expression which fits the data regardless of the form. I would use these expression in the NIntegrate to calculate several integrals along the energy axis as shown here $\endgroup$

fred85
– fred85

2020-06-02 16:23:32 +00:00
Commented Jun 2, 2020 at 16:23
$\begingroup$ @fred85 The fit with frequency in MarcoB 's and my answer is quite good I think. $\endgroup$

Ulrich Neumann
– Ulrich Neumann

2020-06-02 17:35:19 +00:00
Commented Jun 2, 2020 at 17:35

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