MATLAB Functions

Check number of input arguments

msg = nargchk(low,high,number)

Description

The nargchk function often is used inside an M-file to check that the correct number of arguments have been passed.

msg = nargchk(low,high,number)

returns an error message if number is less than low or greater than high. If number is between low and high (inclusive), nargchk returns an empty matrix.

Arguments




low, high
The minimum and maximum number of input arguments that 
should be passed.

number
The number of arguments actually passed, as determined by the 
nargin function.

low, high	The minimum and maximum number of input arguments that should be passed.
`number`	The number of arguments actually passed, as determined by the `nargin` function.

Examples

Given the function foo:

function f = foo(x,y,z)
error(nargchk(2,3,nargin))

Then typing foo(1) produces:

Not enough input arguments.