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removeOutput

Remove output variable from fuzzy inference system

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Syntax

fisOut = removeOutput(fisIn,outputName)

Description

fisOut = removeOutput(fisIn,outputName) removes the output variable with the name outputName from fuzzy inference system fisIn and returns the resulting fuzzy system in fisOut.

example

Examples

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Open Live Script

Load fuzzy system.

fis = readfis("mam22");

View the output variables of fis.

fis.Outputs
ans = 
  1x2 fisvar array with properties:

    Name
    Range
    MembershipFunctions

  Details:
           Name       Range      MembershipFunctions
         ________    ________    ___________________

    1    "force"     -5     5        {1x4 fismf}    
    2    "force2"    -5     5        {1x4 fismf}

View the rules of fis.

fis.Rules
ans = 
  1x4 fisrule array with properties:

    Description
    Antecedent
    Consequent
    Weight
    Connection

  Details:
                                      Description                              
         ______________________________________________________________________

    1    "angle==small & velocity==small => force=negBig, force2=posBig2 (1)"  
    2    "angle==small & velocity==big => force=negSmall, force2=posSmall2 (1)"
    3    "angle==big & velocity==small => force=posSmall, force2=negSmall2 (1)"
    4    "angle==big & velocity==big => force=posBig, force2=negBig2 (1)"

Remove the forceBig output variable.

fis = removeOutput(fis,"force2");

View the updated output variables.

fis.Outputs
ans = 
  fisvar with properties:

                   Name: "force"
                  Range: [-5 5]
    MembershipFunctions: [1x4 fismf]

View the updated rules.

fis.Rules
ans = 
  1x4 fisrule array with properties:

    Description
    Antecedent
    Consequent
    Weight
    Connection

  Details:
                             Description                     
         ____________________________________________________

    1    "angle==small & velocity==small => force=negBig (1)"
    2    "angle==small & velocity==big => force=negSmall (1)"
    3    "angle==big & velocity==small => force=posSmall (1)"
    4    "angle==big & velocity==big => force=posBig (1)"

force2 has been removed from the variables and rules of fis.

Input Arguments

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Fuzzy inference system, specified as one of the following:

  • mamfis object — Mamdani fuzzy inference system

  • sugfis object — Sugeno fuzzy inference system

  • mamfistype2 object — Type-2 Mamdani fuzzy inference system

  • sugfistype2 object — Type-2 Sugeno fuzzy inference system

Output variable name, specified as a string or character vector.

Output Arguments

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Updated fuzzy inference system, returned as one of the following objects.

  • mamfis object — Mamdani fuzzy inference system

  • sugfis object — Sugeno fuzzy inference system

  • mamfistype2 object — Type-2 Mamdani fuzzy inference system

  • sugfistype2 object — Type-2 Sugeno fuzzy inference system

fisOut has the same properties as fisIn except:

  • The input variable with the specified name is removed.

  • The specified input variable is removed from any fuzzy rules. If a rule has only the specified input variable in its antecedent, then the entire rule is removed. If a rule has more than one input variable in its antecedent, then the specified input variable is removed from the antecedent.

Version History

Introduced in R2018b

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See Also

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