If you leave out the 'function' line, then a mfile is considered to be a 'script'. SCRAM(X) returns a scrambled vector and a vectorĬontaining the indices used to descramble it. % containing the indices used to descramble it. % SCRAM(X) returns a scrambled vector and a vector % SCRAM Scramble the elements in a vector. The first contiguous group of lines that begin with '%' are treated as the help blurb for the function.

After the function declaration, there are a series of lines that start with '%' (these are comments).By default all variables in m-files are local, so you may call them whatever you want. The input arguments are listed after the function name in the format (x1,x2,x3.etc) These variables are assigned values when the function is called. The name you use must be the same as the filename (minus the. Output arguments are listed in the format, (if you have only 1 you don't need the brackets). Following the function declaration there is a list of output arguments (in this case 1), a statement of the function name, and a list of input arguments.If you leave this out, matlab will treat the file as a 'script' (see below). The first line begins with the word 'function' This tells matlab that this is function.

Let us examine the structure of this file: % FLIPUD(X) returns X with columns preserved and rows flipped Now you can call this from with another function.%FLIPUD Flip matrix in the up/down direction. function dataOfInterest = getDataFunction(myFile) Better way is to turn your *.m file script (here, getDataScript) into a function itself, which returns your data of interest.

One would be to just call the script, assuming the path to the data you want is never going to change (doubtful!). On the other hand, perhaps you want to be able to use this data import process within some other function. then passing that data to a function is trivial, e.g. % Perhaps we only want the third column of a 2D matrix % getDataScript.m file for getting some data. Assuming your *.m file looks something like this. If the former, it's pretty straightforward. I'm not sure whether you want to do subsequent operations (function calls) with the data from within your *.m file script (assuming it's a script), or whether you want to be able to use these data import scripts from within some other function.

Matlab load function from file