#11262: Interactive plots stored in the browser's cache and manipulated with
JavaScript.
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Reporter: viktorzk | Owner: jason, mpatel, was
Type: enhancement | Status: new
Priority: minor | Milestone:
Component: notebook | Keywords: notebook interactive cached plot
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Desired functionality: the change in the plot (or whatever one is
manipulating) to happen *as* (not after) one moves, say, a slider, without
any noticeable lag.
The current @interact implementation contacts the server and recalculates
the output whenever a variable changes. The result is a noticeable lag
between moving a slider and the update in a plot. Caching the plots helps
partially, but the time it takes to contact the server and to generate the
image is very noticeable.
An alternative approach (which does not have to *replace* the current one)
is to precalculate all possible outputs and to send them to the notebook
in advance.
For example, each frame of a plot can be saved as an image file on the
server, then the notebook can load all images in some hidden place, and
when the user moves a JavaScript slider, the images will be ready in the
browser's cache - without any interaction with the server. A proof of
concept: http://nt.sagenb.org/home/pub/36/ .
I have taken the liberty to focus this ticket on a very specific way of
obtaining the desired functionality because I don't see any other options.
If there are, please edit accordingly. Also, I am not familiar with the
trac system, but if I am expected to monitor this ticket and answer
questions and make changes, could somebody else volunteer to do this? I
don't yet know if I will have the time to look at this ticket often in the
near future.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11262>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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