Fuzzy Logic Toolbox

addmf

Add a membership function to an FIS.

Syntax

• a = addmf(a,'varType',varIndex,'mfName','mfType',mfParams)
  

Description

A membership function can only be added to a variable in an existing MATLAB workspace FIS. Indices are assigned to membership functions in the order in which they are added, so the first membership function added to a variable will always be known as membership function number one for that variable. You cannot add a membership function to input variable number two of a system if only one input has been defined.

The function requires six input arguments in this order:

• A MATLAB variable name of a FIS structure in the workspace
• A string representing the type of variable you want to add the membership function to ('input' or 'output')
• The index of the variable you want to add the membership function to
• A string representing the name of the new membership function
• A string representing the type of the new membership function
• The vector of parameters that specify the membership function

Examples

• a = newfis('tipper');
  a = addvar(a,'input','service',[0 10]);
  a = addmf(a,'input',1,'poor','gaussmf',[1.5 0]);
  a = addmf(a,'input',1,'good','gaussmf',[1.5 5]);
  a = addmf(a,'input',1,'excellent','gaussmf',[1.5 10]);
  plotmf(a,'input',1)
  
  
  
  

See Also

addrule, addvar, plotmf, rmmf, rmvar

Functions -- Alphabetical List

addrule