Octave Fuzzy Logic Toolkit: cubic_approx_demo

### Function Reference: `cubic_approx_demo`

Script File: cubic_approx_demo

Demonstrate the use of the Octave Fuzzy Logic Toolkit to approximate a non-linear function using a Sugeno-type FIS with linear output functions.

The demo:

- reads an FIS structure from a file
- plots the input membership functions
- plots the (linear) output functions
- plots the FIS output as a function of the input

See also: heart_disease_demo_1, heart_disease_demo_2, investment_portfolio_demo, linear_tip_demo, mamdani_tip_demo, sugeno_tip_demo