On Sep 14, 2007, at 1:46 PM, William Stein wrote:
> On 9/14/07, Hamptonio <[EMAIL PROTECTED]> wrote:
>> Recently I started using Mathematica 6 in the computer labs of some
>> courses I teach, and I cannot help but be impressed. The new dynamic
>> commands such as Manipulate are very impressive, and are perfect for
>> teaching. Before seeing how powerful it is, I had hoped to switch
>> from using mathematica to sage in the fall of 2008. But now I am not
>> sure I can justisfy that switch or convince my colleagues it would
>> make sense. (As an aside: assume for the sake of argument that my
>> department gets mathematica for free, which is true in a certain
>> bureaucratic sense).
>>
>> For some sense of what mathematica can now do, check out:
>> http://www.wolfram.com/products/mathematica/newin6/content/
>> DynamicInteractivity/.
>> I actually think its more impressive in person.
>>
>> While I would like to help remedy the gap between sage and
>> mathematica/
>> matlab in this respect, I am not sure how it would be done. I am
>> learning a little about wxPython, but I don't think that would work
>> through the notebook at all, unless a program was created on the
>> server for download and byte-compilation by the client. Does anyone
>> have any ideas? If javascript is a possibility, can someone recommend
>> a good reference for learning to use it for such complicated
>> purposes? Or is java an option?
>
> Isn't this exactly the sort of thing that javascript/AJAX is good
> at doing?
> When you move an html control the server is contacted for the updated
> output and it is displayed (by directly manipulating the DOM). I'm
> sure
> it won't be as snappy as a purely local GUI (e.g., Mathematica),
> but it
> will work from anywhere over a web browser, which counts for a lot
> these days.
>
> I've had some discussions with people about implementing things like
> this (mostly with Robert Miller), but nobody has actually done it for
> SAGE yet. Our complete rewrite of the notebook to use Twisted
> as the underlying server technology I think makes doing something
> like this easier.
That is really cool!
Generating, serving, and displaying pngs via javascript would be
really hard to do fast enough to make it smooth.
{{{
%time
for n in range(10):
plot(x^n).show()
}}}
CPU time: 2.44 s, Wall time: 2.93 s
A rough estimate of 4 frames/sec... maybe it's possible.
- Robert
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