Finding a function to best fit a curve

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  • Thread starter Thread starter kelly0303
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    Curve Fit Function
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SUMMARY

The discussion focuses on fitting a function to a curve that exhibits a slow decline followed by a rapid rise, resembling an upside-down resonance curve. Participants suggest exploring functions commonly used for low-pass filter resonance curves and recommend utilizing a logarithmic scale for the ordinate to enhance the fitting process. Additionally, a video resource related to low-pass filter resonance curves is mentioned as a helpful reference for understanding the topic further.

PREREQUISITES
  • Understanding of curve fitting techniques
  • Familiarity with low-pass filter concepts
  • Knowledge of logarithmic scales in data visualization
  • Experience with data analysis tools such as Python's SciPy library
NEXT STEPS
  • Research curve fitting methods in Python using SciPy's curve_fit function
  • Explore the characteristics of low-pass filter resonance curves
  • Learn about logarithmic transformations and their applications in data analysis
  • Watch the recommended video on low-pass filter resonance curves for practical insights
USEFUL FOR

Data analysts, engineers, and researchers involved in curve fitting and signal processing who seek to optimize their understanding of resonance curves and fitting techniques.

kelly0303
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Hello! I want to fit a function to the curve I attached (the first image shows the full curve, while the second one is a zoom-in in the final region). Please ignore the vertical lines, what I care about is the main, central curve. It basically goes down slowly and then it has a fast rise. What is the best function that I can try to use to fit this kind of curve? Thank you!
 

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What is it ?

Looks like an upside down resonance curve like

1575024971485.png
(from here)

Also: googling 'low-pass filter resonance curve' yields this nice video.

Perhaps you can try a log scale for the ordinate ?
 

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