Fuzzy Logic Toolbox

rmvar

Remove variables from an FIS.

Syntax

• [fis2,errorStr] = rmvar(fis,'varType',varIndex) 
  fis2 = rmvar(fis,'varType',varIndex)
  

Description

fis2 = rmvar(fis,'varType',varIndex) removes the variable 'varType', of index varIndex, from the fuzzy inference system associated with the workspace FIS structure, fis:

• The string varType must be 'input' or 'output'.
• varIndex is an integer for the index of the variable. This index represents the order in which the variables are listed.

[fis2,errorStr] = rmvar(fis,'varType',varIndex) returns any error messages to the string, errorStr.

This command automatically alters the rule list to keep its size consistent with the current number of variables. You must delete from the FIS any rule that contains a variable you want to remove, before removing it. You cannot remove a fuzzy variable currently in use in the rule list.

Examples

• a = newfis('mysys');
  a = addvar(a,'input','temperature',[0 100]);
  getfis(a)
  

returns

•     Name = mysys
        Type      = mamdani
        NumInputs = 1
        InLabels  = 
              temperature
        NumOutputs = 0
        OutLabels = 
        NumRules = 0
        AndMethod = min
        OrMethod = max
        ImpMethod = min
        AggMethod = max
        DefuzzMethod = centroid
  ans =
  mysys
  b = rmvar(a,'input',1);
  getfis(b)
  

returns

•         Name = mysys
          Type = mamdani
          NumInputs = 0
          InLabels =
          NumOutputs = 0
          OutLabels =
          NumRules = 0
        AndMethod = min
        OrMethod = max
        ImpMethod = min
        AggMethod = max
        DefuzzMethod = centroid
  ans =
  mysys
  
  

See Also

addmf, addrule, addvar, rmmf

rmmf

ruleedit