readfis

Load fuzzy inference system from file

Syntax

fis = readfis(fileName)

fis = readfis

Description

You can load a fuzzy inference system (FIS) from a .fis file using the readfis function. To save a FIS to a file, use the writeFIS function.

Note

Do not manually edit the contents of a .fis file. Doing so can produce unexpected results when loading the file using a function, such as readfis and getCodeGenerationData, or an app, such as Fuzzy Logic Designer.

fis = readfis(fileName) reads a FIS from the file specified by fileName.

fis = readfis opens a dialog box for selecting and reading a .fis file.

Examples

Load Fuzzy Inference System from File

Load the fuzzy system stored in the file tipper.fis.

fis = readfis('tipper')

fis = 
  mamfis with properties:

                       Name: "tipper"
                  AndMethod: "min"
                   OrMethod: "max"
          ImplicationMethod: "min"
          AggregationMethod: "max"
      DefuzzificationMethod: "centroid"
                     Inputs: [1x2 fisvar]
                    Outputs: [1x1 fisvar]
                      Rules: [1x3 fisrule]
    DisableStructuralChecks: 0

	See 'getTunableSettings' method for parameter optimization.

Input Arguments

fileName — File name

string | character vector

File name, specified as a string or character vector either with or without the .fis extension. This file must be in the current working directory or on the MATLAB^® path.

Output Arguments

fis — Fuzzy inference system

mamfis object | sugfis object | mamfistype2 object | sugfistype2 object

Fuzzy inference system, returned 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

Compatibility Considerations

Support for representing fuzzy inference systems as structures will be removed

Warns starting in R2019b

Support for representing fuzzy inference systems as structures will be removed in a future release. Use mamfis and sugfis objects instead. There are differences between these representations that require updates to your code. These differences include:

• Object property names that differ from the corresponding structure fields.

• Objects store text data as strings rather than as character vectors.

Also, all Fuzzy Logic Toolbox™ functions that accepted or returned fuzzy inference systems as structures now accept and return either mamfis or sugfis objects.

To convert existing fuzzy inference system structures to objects, use the convertfis function.