MATLAB Function Reference    

Edit or create M-file

Graphical Interface

As an alternative to the edit function, select New or Open from the File menu in the MATLAB desktop or any desktop tool.



edit opens a new editor window.

edit fun.m opens the M-file fun.m in the default editor. Note that fun.m can be a MATLAB partialpath or a complete path. If fun.m does not exist, a prompt appears asking if you want to create a new file titled fun.m. After you click Yes, the Editor/Debugger creates a blank file titled fun.m. If you do not want the prompt to appear in this situation, select that check box in the prompt. Then when you type edit fun.m, where fun.m did not previously exist, a new file called fun.m is automatically opened in the Editor. To make the prompt appear, specify it in preferences for Prompt on page 7-38.

edit file.ext opens the specified file.

edit fun1 fun2 fun3 ... opens fun1.m, fun2.m, fun3.m, and so on, in the default editor.

edit class/fun, edit private/fun, or edit class/private/fun can be used to edit a method, private function, or private method (for the class named class).


To specify the default editor for MATLAB, select Preferences from the File menu. On the Editor/Debugger panel, select the MATLAB Editor/Debugger or specify another.

UNIX Users

If you run MATLAB with the -nodisplay startup option, or run without the DISPLAY environment variable set, edit uses the External Editor command. It does not use the MATLAB Editor/Debugger, but instead uses the default editor defined for your system in $matlabroot/X11/app-defaults/Matlab.

You can specify the editor that the edit function uses or specify editor options by adding the following line to your own .Xdefaults file, located in ~home


For example,

means that when you type edit foo, the file foo will open in the emacs editor.

After adding the line to your .Xdefaults file, you must run the following before starting MATLAB:

For the HP 700 platform, the default editor is instead defined in $matlabroot/toolbox/matlab/general/edit.m. To change it, open the file edit.m and edit the line

See Also

open, type

  echo eig