Running a UI based function on a separate worker.

2016 12 19
1 个回答
更新时间：2016 12 19
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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.

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回答（1 个）

Walter Roberson
Walter Roberson 2016-12-19

0 个投票

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.

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hemant
hemant 2016-12-19
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
Walter Roberson 2016-12-19
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
hemant 2016-12-19
My bad! These are package folders. I call the function in the same manner usually, so I know that it works.
Walter Roberson
Walter Roberson 2016-12-19
I suggest experimenting with
funcHandle = @(x) folder1.folder2.func1(x)
hemant
hemant 2016-12-19
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
Walter Roberson 2016-12-19
Can you zip up your code and attach it?

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hemant
hemant
2016-12-19

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Walter Roberson
Walter Roberson
2016-12-19

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