iptchecknargin (Image Processing Toolbox User's Guide)

Image Processing Toolbox User's Guide

Check number of input arguments

Syntax

iptchecknargin(low,high,num_inputs,func_name)

Description

iptchecknargin(low,high,num_inputs,func_name) checks whether num_inputs is in the range indicated by low and high. If not, iptchecknargin issues a formatted error message.

low should be a scalar nonnegative integer.

high should be a scalar nonnegative integer or Inf.

func_name is a string that specifies the name used in the formatted error message to identify the function checking the handle.

Example

Create a function and use iptchecknargin to check that the number of arguments passed to the function is within the expected range.

function test_function(varargin)
iptchecknargin(1,3,nargin,mfilename);

Trigger the error message by executing the function at the MATLAB command line, specifying more than the expected number of arguments.

```
test_function(1,2,3,4)
```

iptcheckmap iptcheckstrs