How do I create a custom membership function using the Fuzzy Logic Toolbox?

Membership functions need to follow a specific format in order to be compatible with the Fuzzy Logic Toolbox. Are there any guidelines available in the documentation that can be used for creating custom membership functions?

Answer 1

[MathWorks Support Team]

The following documentation page outlines the steps involved in creating custom membership functions in Fuzzy Logic Toolbox:

https://www.mathworks.com/help/fuzzy/building-fuzzy-inference-systems-using-custom-functions.html

For additional examples, look at the membership functions shipped with the Fuzzy Logic Toolbox. These functions can be found in your $MATLABROOT\toolbox\fuzzy\fuzzy directory

(where $MATLABROOT is the output of the command matlabroot at the command line).

Note that the functions always end with the letters 'mf' (such as 'gaussmf.m', 'trimf.m' etc).