Determining what toolboxes provide a given function

To find out which particular function is available in which toolbox, you can type

>> which function_name

For example:

>> which rsdecode
D:\Applications\Matlab704\toolbox\comm\comm\rsdecode.m

This indicates that rsdecode is from the Communications Toolbox (\toolbox\comm).

>> which rsdecode
D:\Applications\Matlab704\toolbox\comm\comm\rsdecode.m

This indicates that it is using the Communications Toolbox.

>> which rsdecode
rsdecode not found

The Communications Toolbox was not installed.

>> which fplot
D:\Applications\Matlab704\toolbox\matlab\specgraph\fplot.m

This indicates that fplot is a MATLAB function.

You can also type

>> doc rsdecode

in MATLAB which will open a new Help window.