writeFIS

Save fuzzy inference system to file

Syntax

writeFIS(fis,fileName)

writeFIS(fis)

writeFIS(fis,fileName,"dialog")

Description

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

writeFIS(fis,fileName) saves the fuzzy inference system fis to the current working folder using file name fileName.

writeFIS(fis) opens a dialog box for saving a FIS. In this dialog box, specify the name and location of the .fis file.

writeFIS(fis,fileName,"dialog") opens a dialog box for saving a FIS, setting the name of the file in the dialog box to fileName. In the dialog box, specify the location for the file.

Examples

Save Fuzzy Inference System to File

Create a fuzzy inference system, and add an input variable with membership functions.

fis = mamfis('Name','tipper');
fis = addInput(fis,[0 10],'Name','service');
fis = addMF(fis,'service','gaussmf',[1.5 0],'Name','poor');
fis = addMF(fis,'service','gaussmf',[1.5 5],'Name','good');
fis = addMF(fis,'service','gaussmf',[1.5 10],'Name','excellent');

Save the fuzzy system in the current working folder in the file myFile.fis.

writeFIS(fis,'myFile');

Input Arguments

fis — Fuzzy inference system

mamfis object | sugfis object | mamfistype2 object | sugfistype2 object

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

fileName — File name

string | character vector

File name, specified as a string or character vector. If you do not specify the .fis extension in the file name, writeFIS adds the extension.

Version History

Introduced in R2018b

R2019b: 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.

R2018b: writefis is now writeFIS

Behavior changed in R2018b

writefis is now writeFIS. To update your code, change the function name from writefis to writeFIS. The syntaxes are equivalent.