rmmf

(To be removed) Remove membership function from fuzzy inference system

rmmf will be removed in a future release. Use removeMF instead. For more information, see Compatibility Considerations.

Syntax

outfis = rmmf(infis,varType,varIndex,'mf',mfIndex)

Description

outfis = rmmf(infis,varType,varIndex,'mf',mfIndex) Removes the specified membership function from a given input or output variable of the fuzzy system infis.

Examples

Remove Membership Function From Variable

Create a fuzzy inference system.

fis = newfis('mysys');

Add an input variable with a single membership function to the system.

fis = addvar(fis,'input','temperature',[0 100]);
fis = addmf(fis,'input',1,'cold','trimf',[0 30 60]);

View the variable properties.

getfis(fis,'input',1)

ans = struct with fields:
      Name: 'temperature'
    NumMFs: 1
       mf1: 'cold'
     range: [0 100]

Remove the membership function. To do so, remove membership function 1 from input 1.

fis = rmmf(fis,'input',1,'mf',1);

View the variable properties.

getfis(fis,'input',1)

ans = struct with fields:
      Name: 'temperature'
    NumMFs: 0
     range: [0 100]

The variable now has no membership function.

Input Arguments

infis — Fuzzy system

mamfis object | sugfis object

Fuzzy system, specified as a FIS object.

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.

mfIndex — Membership function index

positive integer

Membership function index, specified as a positive integer.

Output Arguments

outfis — Updated fuzzy system

mamfis object | sugfis object

Updated fuzzy system, returned as a FIS object.

Version History

Introduced before R2006a

R2019b: Support for fuzzy inference system structures will be removed

Support for representing fuzzy inference systems as structures will be removed in a future release. Use mamfis and sugfis objects with this function instead. To convert existing fuzzy inference system structures to objects, use the convertfis function.

This change was announced in R2018b. Using fuzzy inference system structures with this function issues a warning starting in R2019b.

R2018b: To be removed

rmmf will be removed in a future release. Use removeMF instead. There are differences between these functions that require updates to your code.

Update Code

The following table shows some typical usages of rmmf and how to update your code to use removeMF instead. Previously, you specified the index of the variable from which you wanted to remove the membership function and the index of the membership function that you wanted to remove. Now, to remove a membership function, specify the variable name and the membership function name.

If your code has this form:	Use this code instead:
fis = rmmf(fis,'input',1,'mf',1)	fis = removeMF(fis,"service","poor")
fis = rmmf(fis,'output',1,'mf',1)	fis = removeMF(fis,"tip","cheap")