Functions normally return when the end of the function is reached. Subfunctions are not visible outside the file where they are defined. For example, avg is a subfunction within the file stat.m: The variables within the body of the function are all local variables.Ī subfunction,visible only to the other functions in the same file, is created by defining a new function with the function keyword after the body of the preceding function or subfunction. m withĭefines a new function called stat that calculates the mean and standard deviation of a vector. For example, the existence of a file on disk called stat. The name of a function, as defined in the first line of the M-file, should be the same as the name of the file without the. The M-file name, less its extension, is what MATLAB searches for when you try to use the script or function.Ī line at the top of a function M-file contains the syntax definition. The name of an M-file begins with an alphabetic character, and has a filename extension of. Functions make use of their own local variables and accept input arguments. Scripts are simply files containing a sequence of MATLAB statements. M-files can be either scripts or f unctions. The existing commands and functions that compose the new function reside in a text file called an M-file.

You add new functions to the MATLAB vocabulary by expressing them in terms of existing functions. Function (MATLAB Functions) MATLAB Function Reference

Matlab function