MATLAB FUNCTION FULL
MATLAB FUNCTION SERIES

In this sense, all variables are considered global in a script. All variables defined in the parent workspace are accessible to the script and can be modified by the script.

Calling a script is equivalent to entering each of the lines in the script at the '>' prompt. If you leave out the 'function' line, then a mfile is considered to be a 'script'. SCRAM(X) returns a scrambled vector and a vectorД¬ontaining the indices used to descramble it. % containing the indices used to descramble it. % SCRAM(X) returns a scrambled vector and a vector % SCRAM Scramble the elements in a vector. The first contiguous group of lines that begin with '%' are treated as the help blurb for the function.

MATLAB FUNCTION SERIES

After the function declaration, there are a series of lines that start with '%' (these are comments).

By default all variables in m-files are local, so you may call them whatever you want. The input arguments are listed after the function name in the format (x1,x2,x3.etc) These variables are assigned values when the function is called. The name you use must be the same as the filename (minus the. Output arguments are listed in the format, (if you have only 1 you don't need the brackets).

Following the function declaration there is a list of output arguments (in this case 1), a statement of the function name, and a list of input arguments.

If you leave this out, matlab will treat the file as a 'script' (see below).

The first line begins with the word 'function' This tells matlab that this is function.

Let us examine the structure of this file: % FLIPUD(X) returns X with columns preserved and rows flipped Indicates there is a Java class Welcome and a Java class file Welcome.class.%FLIPUD Flip matrix in the up/down direction. In the following example, exist returns 8 on the Java class, Welcome, and returns 2 on the Java class file, Welcome.class. This indicates that plot is a built-in function. This example uses exist to check whether a MATLAB function is a built-in function or a file: To check for the existence of more than one variable, use the ismember function. Returns the status of the variable or file in variable a. The kind argument may be one of the following: If item of type kind does not exist, it returns 0. Returns the status of item for the specified kind.

However, if item is a Java class file, then exist('item') returns a 2.

If item is a Java class, then exist('item') returns an 8.

MATLAB FUNCTION FULL

If the file or directory is not on the search path, then item must specify either a full pathname, a partial pathname relative to MATLABPATH, or a partial pathname relative to your current directory. If item is found, but is not on the MATLAB search path, exist('item') returns 2, because it considers item to be an unknown file type.ДЄny other file type or directory specified by item is not required to be on the MATLAB search path to be recognized by exist. MEX, MDL, and P-files must be on the MATLAB search path for exist to return the values shown above. If item specifies a filename, that filename may include an extension to preclude conflicting with other similar filenames. If item is a P-file on your MATLAB search path. If item is an MDL-file on your MATLAB search path. If item is a MEX-file on your MATLAB search path. If item is an M-file or a file of unknown type. If the variable item exists in the workspace. Returns the status of the variable or file, item: Exist (MATLAB Functions) MATLAB Function ReferenceДЄs an alternative to the exist function, use the Workspace browser or the Current Directory Browser.

Matlab function