Creating new functions -- .m files

• New functions can be defined by storing the commands to compute them in a file with a name that exactly matches the function name followed by .m .

• Function definition syntax:

function [output vars ] = function_name ( input vars )

• Example: File sqr.m.

function [result] = sqr(x);

% yield the square of the values in x

result = x .* x;

• All variables are local to the function.

• Comments that immediately follow the function definition line are used by help and lookfor

• Functions may be applied to any Matlab data and will be applied element-by-element automatically if appropriate.

Previous slide

Next slide

Back to first slide

View graphic version