Jason Grout wrote:
>
> Hi everyone,
>
> I've been thinking about how to implement interactive widgets in the
> notebook. Things like sliders, buttons, etc., that allow interactivity
> like Maplets in Maple or the Manipulate command in Mathematica 6.
> Here's an example of an interface:
>
> sage: a=Slider(1,10)
> sage: plot(sin(a()*x),-3,3)
>
> and in the notebook would appear a slider labeled "a" and the graph
> would appear below it. As the slider is moved between 1 and 10, the
> plot updates dynamically, showing the frequency-scaling aspect of
> different values of a.
Yeah! It works!! :)
I've put a very alpha patch (against 2.8.13) up on trac #1322 that
implements the following:
sage: from sage.server.notebook.widgets.menu import menu
sage: menu('f', [sin, cos, tan] ).show()
(a select box menu is shown with sin, cos, and tan as options. Pick a
value for f. And that means that at this point, you really do need to
pick a value for f that is different from the initial value.)
sage: plot(f(x),0,2*pi).show()
(the plot of f(x) (with the selected f) is shown.)
There is a huge list of disclaimers/todo things in the comments of
#1322. However, this initial alpha-quality patch gives an idea of the
functionality and an idea of how to do it.
Have a great day,
-Jason
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