readfis

Load fuzzy inference system from file

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 readfis.

Syntax

fis = readfis(fileName)

fis = readfis

Description

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

fis = readfis opens a dialog box for selecting and opening loading 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 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

Fuzzy inference system, returned as one of the following:

• mamfis object — Mamdani fuzzy inference system

• sugfis object — Sugeno fuzzy inference system

Compatibility Considerations

Support for representing fuzzy inference systems as structures will be removed

Not recommended starting in R2018b

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 that 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.