0
$\begingroup$

Possible Duplicate:
Why do buttons with ChoiceDialog freeze the front end?
Why is SystemDialogInput failing to return a save file path?
Evaluation inside Button stops after some seconds

I am trying to use the code from:

Make a button that evaluates a function over and over

to make a button evaluate some code and plot the results, but when the code takes more than a few seconds it does not plot the results.

Here is a simple example that illustrates the problem I am having

For short time periods it works fine:

    func := (Pause[1]; Plot[Sin[x], {x, 0, 5}]);
    DynamicModule[{result = Null},  Column[{Button["Press", result = func], Dynamic[result]}]]

But if I change the pause to be 10 seconds it doesn't show the plot

    func := (Pause[10]; Plot[Sin[x], {x, 0, 5}]);
    DynamicModule[{result = Null},  Column[{Button["Press", result = func], Dynamic[result]}]]
$\endgroup$
0

1 Answer 1

2
$\begingroup$

Try

func := (Pause[10]; Plot[Sin[x], {x, 0, 5}]);
DynamicModule[{result = Null}, 
Column[{Button["Press", result = func, Method -> "Queued"], 
Dynamic[result]}]]

From MMA documentation:

By default, button functions are evaluated on a preemptive link, which times out after 5 seconds:

Use Method->"Queued" to evaluate button functions, which never times out.

$\endgroup$
1
  • $\begingroup$ Perfect thank you! $\endgroup$ Sep 4, 2012 at 20:03

Not the answer you're looking for? Browse other questions tagged or ask your own question.