WHICH Get Information on Function

Section: Inspection Functions

Usage

Returns information on a function (if defined). The usage is 
   which(fname)

where fname is a string argument that contains the name of the function. For functions and scripts defined via .m files, the which command returns the location of the source file: 

   y = which(fname)

will return the filename for the .m file corresponding to the given function, and an empty string otherwise.

Example

First, we apply the which command to a built in function. 
--> which fft
Function fft is a built in function

Next, we apply it to a function defined via a .m file. 

--> which fliplr
Function fliplr, M-File function in file '/home/basu/dev/branches/FreeMat4/src/toolbox/array/fliplr.m'