Fitting Fraunhofer Diffraction Data

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SUMMARY

The discussion focuses on fitting Fraunhofer diffraction data using a nonlinear nested sine function as described in the provided link. Users recommend utilizing MATLAB for modeling, although they also suggest that Gnuplot can effectively perform the fitting process. The consensus is that fitting the data in Fourier space yields satisfactory results, and assistance is offered for those needing help with their specific data and model functions.

PREREQUISITES
  • Understanding of Fraunhofer diffraction principles
  • Proficiency in MATLAB for data modeling
  • Familiarity with Gnuplot for data fitting
  • Knowledge of nonlinear function fitting techniques
NEXT STEPS
  • Explore MATLAB's curve fitting toolbox for nonlinear models
  • Learn Gnuplot commands for fitting data to functions
  • Study Fourier transforms and their application in data analysis
  • Investigate advanced fitting techniques for complex models
USEFUL FOR

Experimental physicists, data analysts, and anyone involved in fitting complex models to diffraction data will benefit from this discussion.

LogicalTime
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Homework Statement


Is there a good way to do a fit. The fft looks simple:

I am trying to fit data from my experiment to the very nonlinear nested sine function given as equation 3 here:
http://www.physics.umd.edu/courses/Phys375/HillSpring10/Labs/Lab5Diffraction.pdf



Homework Equations


see above


The Attempt at a Solution


I am using matlab, the model function is crazy! Though the data looks good in Fourier space.
 
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Try gnuplot, all in all it does a good fit.
it is just few minutes to do it. If you need help supply your data with the model function, i can try.
good luck
 

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