MATLAB software (for more sophisticated examples), or type help function or doc function at the MATLAB command line for more information. Look at the functions created for this tutorial listed below, or at the functions in the toolbox folder in the Matlab Function Syntax Example Figure Annotation LATEX in Matlab The. This example just shows what the basic form MATLAB Functions - Basic Features Creating function m-files with a plain text editor Function Defintion Input and Output parameters Comment statements. Thus it is important to always treat text, variables, and functions correctly. Obviously, most functions will be more complex than the one demonstrated here. If you save these three lines in a file called "add.m" in the MATLAB directory, then you can use it by typing the following Below is a simple example of what the function, add.m, might look like. The x and y represent the smallest and largest number of inputs that can be accepted by the function if more or less inputs are entered,įunctions can be rather tricky to write, and practice will be necessary to successfully write one that will achieve the desired One suggestion would be to start with the following line. Finally, below the help text, theĪctual text of the function with all of the commands is included. These lines are optional, but must be entered using % in front of each line in the same way that you include comments in an ordinary m-file. The next few lines contain the text that will appear when The first line of the file should contain the syntaxįunction = filename(input1,input2,input3)Ī function can input or output as many variables as are needed. Software, or in a directory which is contained in MATLAB's search path. This file should be saved in the same directory as the MATLAB The new function must be given a filename with a '.m' extension. You can write your own functions using the function command. In programming languages in that they have inputs (parameters which are passed to the m-file), outputs (values which are returnedįrom the m-file), and a body of commands which can contain local variab. These types of m-files are similar to subroutines
When entering a command such as roots, plot, or step into MATLAB what you are really doing is running an m-file with inputs and outputs that has been written to accomplish a specific task.