Running a UI based function on a separate worker.

Hey all, I have a matlab function that opens a user interactive window and takes some inputs from the user and does some calculation which are displayed only on interactive window itself(no outputs). The calculations take a lot of time so I tried running it as a batch but ended up with the following error,

The script or function that will be called on the worker must be a single string or function handle.

Any ideas as to what the problem might be? Just to be clear, I am calling a single function in the batch but that function in itself calls other functions.

Answer 1

[Walter Roberson]

Your slightly later Question http://www.mathworks.com/matlabcentral/answers/317430-input-argument-error-while-running-a-batch-function suggests that you were calling batch() incorrectly, but it is difficult for us to be sure as you did not post your code.

[hemant]

This is a different function. After your reply to the previous one I slightly changed the way I was calling the function. The function in a folder on a separate path . So the entire code is

    addpath ~/MATLAB/folder1
    funcHandle=@ folder1.folder2.func1
     j=batch(funcHandle,0);

But this time I am not even seeing the UI window that opens up.

[Walter Roberson]

The syntax

 @ folder1.folder2.func1

is not valid, not unless folder1 is created as a "package" and folder2 is created as a package within the first package. That would require that the directory structure be

+folder1/+folder2/func1.m

where the '+' are literal parts of the directory name.

You cannot use @ to create a function handle to an arbitrary location: other than with packages, you can only create handles to functions that are on your path.

[hemant]

My bad! These are package folders. I call the function in the same manner usually, so I know that it works.

[José-Luis]

Famous last words...

[Walter Roberson]

I suggest experimenting with

      funcHandle = @(x) folder1.folder2.func1(x)

[hemant]

That's exactly what I did just without the input argument because it doesn't need one. But when I ran a batch with that function all the GUI didn't open up at like it normally does.

[Walter Roberson]

Can you zip up your code and attach it?