Getting access of an output variable from a function or script which is saved in a different folder.

Hi everybody, In one folder (P:\MATLAB\SystematischesPM\Data) I have got a script named "DataDownload". It returns a cell 20x1 named "DataSet".

My question: I would like, from another folder (Q:\SystematischesPM\Quality), to create a function which loads some of the data from the cell "DataSet".

I suppose that I will have to run the script "DataDownload" first from the function in (Q:\Syste...) and then get access to the desired data in "DataSet"? Do you know an elegant way of doing that?

[Stephen23]

"I have got a script named "DataDownload". It returns a cell 20x1 named "DataSet"."

Scripts do not have input or output arguments, so a script cannot return anything:

https://www.mathworks.com/help/matlab/matlab_prog/scripts-and-functions.html

Do you have a script or a function? This makes a difference, as they can be called in different ways.

[BdS]

Sorry for the confusion. I have got a script. When I run it I get a cell 20x1

Answer 1

[OCDER]

Use path to define functions that you want to use, but are in different folders.

https://www.mathworks.com/help/matlab/ref/path.html

For your case,

addpath('P:\MATLAB\SystematischesPM\Data');
addpath('Q:\SystematischesPM\Quality')

In case you want to add subfolder too, use genpath

https://www.mathworks.com/help/matlab/ref/genpath.html?searchHighlight=genpath&s_tid=doc_srchtitle

addpath(genpath('P:\MATLAB\SystematischesPM\Data'));
addpath(genpath('Q:\SystematischesPM\Quality'))

Now you can summon DataDownload from any working directory.

[OCDER]

Why not turn your script into a function?

function Out = DataDownload()
Out = cell(20, 1);
...

Then you can get your cell from any function like:

function Out = myFunc(varargin)
MyData = DataDownload; %Gets your 20x1 cell from DataDownload.m function file
...

Of course, DataDownload must be added to your matlab path, as shown in the answer above.