MATLAB Programming

4 M-File Programming
addOptional(name, default, validator);
In this case, the validator input is a handle to an anonymous function:
p.addOptional('format', 'html', ...
@(x)any(strcmpi(x,{'html','ppt','xml','latex'})));
Use addParamValue to specify any arguments that use a parameter-value
format. The syntax is
addParamValue(name, default, validator);
For example,
p.addParamValue('outputDir', pwd, @ischar);
p.addParamValue('maxHeight', [], @(x)x>0 && mod(x,1)==0);
p.addParamValue('maxWidth', [], @(x)x>0 && mod(x,1)==0);
Listing the Arguments. At this point, the schema is complete. Here is the
file publish_ip.m:
function x = publish_ip(script, varargin)
p = inputParser; % Create an instance of the class.
p.addRequired('script', @ischar);
p.addOptional('format', 'html', ...
@(x)any(strcmpi(x,{'html','ppt','xml','latex'})));p.
p.addParamValue('outputDir', pwd, @ischar);
p.addParamValue('maxHeight', [], @(x)x>0 && mod(x,1)==0);
p.addParamValue('maxWidth', [], @(x)x>0 && mod(x,1)==0);
When you call the program, MATLAB stores the name of each argument
in the Parameters property of object p. Addthefollowingtwolinestoyour
publish_ip M-file to display p.Parameters:
sprintf('%s\n %s\n %s\n %s\n %s\n %s', ...
'The input parameters for this program are:', ...
p.Parameters{:})
4-40