error (MATLAB Function Reference)

Display error messages

Syntax

error('error_message')

Description

error('error_message')

displays an error message and returns control to the keyboard. The error message contains the input string error_message.

The error command has no effect if error_message is a null string.

Examples

The error command provides an error return from M-files.

function foo(x,y)
if nargin ~= 2
     error('Wrong number of input arguments')
end

The returned error message looks like:

» foo(pi)
??? Error using ==> foo
Wrong number of input arguments