setfis

(Removed) Set fuzzy system properties

setfis has been removed. Set fuzzy inference system properties using dot notation instead. For more information, see Version History.

Syntax

outfis = setfis(infis,fisPropName,fisPropValue)

outfis = setfis(infis,varType,varIndex,varPropName,varPropValue)

outfis = setfis(infis,varType,varIndex,'mf',mfIndex,mfPropName,mfPropValue)

Description

outfis = setfis(infis,fisPropName,fisPropValue) sets the specified property of the fuzzy system infis to the specified value.

outfis = setfis(infis,varType,varIndex,varPropName,varPropValue) sets the specified property of a variable in a fuzzy system.

outfis = setfis(infis,varType,varIndex,'mf',mfIndex,mfPropName,mfPropValue) sets the specified property of a membership function for an input or output variable in a fuzzy system.

Examples

Set Fuzzy Inference System Properties

Load a fuzzy inference system.

fis = readfis('tipper');

Set the defuzzification method to the bisector method.

fis = setfis(fis,'defuzzmethod','bisector');

View the defuzzification method of the updated FIS.

getfis(fis,'defuzzmethod')

ans = 
'bisector'

Set Variable Properties in FIS

Load a fuzzy inference system.

fis = readfis('tipper');

Set the name of the first input variable to 'help'.

fis = setfis(fis,'input',1,'name','help');

View the name of the variable in the updated system.

getfis(fis,'input',1,'name')

ans = 
'help'

Set Membership Function Properties in FIS

Load a fuzzy inference system.

fis = readfis('tipper');

Change the type of the second membership function of the first input variable to a triangular membership function.

fis = setfis(fis,'input',1,'mf',2,'type','trimf');

When changing the type of a membership function, you must also set the parameters accordingly. To convert the original Gaussian membership function parameters to triangular membership function parameters, use the mf2mf command.

gaussParams = getfis(fis,'input',1,'mf',2,'params');
triParams = mf2mf(gaussParams,'gaussmf','trimf');

Set the membership function parameters to the converted values.

fis = setfis(fis,'input',1,'mf',2,'params',triParams);

View the updated membership function properties.

getfis(fis,'input',1,'mf',2)

ans = struct with fields:
      Name: 'good'
      Type: 'trimf'
    params: [1.4680 5 8.5320]

Input Arguments

infis — Fuzzy system

mamfis object | sugfis object

Fuzzy system, specified as a FIS object.

fisPropName — Fuzzy system property name

string | character vector

Fuzzy system, specified as one of the following values.

• 'name'

• 'type'

• 'andmethod'

• 'ormethod'

• 'impmethod'

• 'aggmethod'

• 'defuzzmethod'

fisPropValue — Fuzzy system property value

string | character vector

Fuzzy system property value, specified as a string or character vector.

varType — Variable type

'input' | 'output'

Variable type, specified as either 'input' or 'output'.

varIndex — Variable index

positive integer

Variable index, specified as a positive integer.

varPropName — Variable property name

'name' | 'range'

Variable property name, specified as either 'name' or 'range'.

varPropValue — Variable property value

string | character vector | two-element row vector

Variable property value, specified as a character vector or string (when varPropName is 'name') or a two-element row vector (when varPropName is 'range').

mfIndex — Membership function index

positive integer

Membership function index, specified as a positive integer.

mfPropName — Membership function property name

'name' | 'type' | 'params'

Membership function property name, specified as 'name', 'type', or 'params'.

mfPropValue — Membership function property value

string | character vector | row vector

Membership function property value, specified as a character vector or string (when mfPropName is 'name' or 'type') or a two-element row vector (when mfPropName is 'params').

Output Arguments

outfis — Updated fuzzy system

mamfis object | sugfis object

Updated fuzzy system, returned as a FIS object.

Version History

Introduced before R2006a

R2024b: Removed

setfis has been removed. Set fuzzy inference system properties using dot notation instead. For more information on fuzzy inference system objects, see mamfis and sugfis.

This table shows some typical usages of setfis for setting fuzzy inference system properties and how to update your code to use dot notation instead.

If your code has this form:	Use this code instead:
fis = setfis(fis,'andmethod','prod')	fis.AndMethod = 'prod'
fis = setfis(fis,'input',1,... 'name','service')	fis.Inputs(1).Name = "service"
fis = setfis(fis,'input',2,... 'mf',1,... params,[5 10 15])	fis.Inputs(2).MembershipFunctions(1).Parameters = ... [5 10 15]

R2019b: Warns

setfis issues a warning that it will be removed in a future release.

R2018b: To be removed

setfis runs without warning, but Code Analyzer indicates that setfis will be removed in a future release.