Lqry - Linear-quadratic regulator design with output weighting. Lqr2 - Linear-quadratic regulator design for continuous-time systems. Lqe2 - Linear quadratic estimator design. Lqrd - Discrete linear-quadratic regulator design from continuousĭlqry - Linear quadratic regulator design with output weighting for Lqr - Linear-quadratic regulator design for state space systems. See the example below lookfor quadratic quadform - Implementation of the quadratic formula.ĭlqr - Linear-quadratic regulator design for discrete-time systems. Also, the first contiguous block of comments after the function header will be returned by the help and doc commands. There is a convention that the first comment line after the function header will be searched by the lookfor command. to the end of each line.Ĭomments are written by preceding the line with the % symbol. You can set break points to halt execution at certain lines for debugging, which we discuss here.Įxpressions that are too long for one line can be broken across lines by adding. Your own functions can be written here as well, as discussed here. To run your script, type in the name at the command prompt, or press F5 or the save and run button at the top of the editor. Commands can be entered here and executed as a script. To launch the editor, if it is not already open, type edit or edit filename.
We can call this as follows = quadform(1,10,3)Īs we mentioned, Matlab commands are executed either at the command prompt or by running scripts or functions, which can be created and edited with the built in editor.
% Implementation of the quadratic formula. It must be saved in a file called quadform.m. It is customary to end the function with the end keyword but this is optional unless you have nested functions or multiple functions per file as described below. Within the function, you can use the inputs as local variables and you must assign values to each of the outputs before the function terminates, (at least those that will be assigned by the caller of the function). (If there is a conflict between the filename and function name, the filename wins however, the matlab editor will give a warning about any such inconsistency.) You cannot create functions within script files (except for anonymous functions discussed below).įunction = myfunction(input1, input2) When you save the m-file, you should give it exactly the same name as the function name in the header. To create your own function, open a new file in the editor by typing edit filename.m and begin by creating the function header, which includes the name of the function and its inputs and outputs.
Declaring functions in matlab code#
Functional code is often better organized, and easier to read and understand.We can compose functions together, and pass functions to other functions.We can parameterize functions to call them multiple times with different inputs, instead of repeating the same code with different values plugged in.
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