[Numpy-discussion] Announcing Bokeh 0.2: interactive web plotting for Python

Peter Wang pwang at continuum.io
Thu Oct 24 14:42:23 EDT 2013

On Thu, Oct 24, 2013 at 10:11 AM, Jason Grout
<jason-sage at creativetrax.com>wrote:

> It would be really cool if you could hook into the new IPython comm
>  infrastructure to push events back to the server in IPython (this is not
> quite merged yet, but probably ready for experimentation like this).
> The comm infrastructure basically opens up a communication channel
> between objects on the server and the browser.  Messages get sent over
> the normal IPython channels.  The server and browser objects just use
> either send() or an on_message() handler.  See
> https://github.com/ipython/ipython/pull/4195

Yeah, I think we should definitely look into integrating with this
mechanism for when we are embedded in a Notebook.  However, we always want
the underlying infrastructure to be independent of IPython Notebook,
because we want people to be able to build analytical applications on top
of these components.

> Here's a very simple example of the Comm implementation working with
> matplotlib images in the Sage Cell server (which is built on top of the
> IPython infrastructure):  http://sagecell.sagemath.org/?q=fyjgmk (I'd
> love to see a bokeh version of this sort of thing :).

This is interesting, and introducing widgets is already on the roadmap,
tentatively v0.4.  When running against a plot server, Bokeh plots already
push selections back to the server side.  (That's how the linked brushing
in e.g. this example works: https://www.wakari.io/sharing/bundle/pwang/cars)

Our immediate short-term priorities for 0.3 are improving the layout
mechanism, incorporating large data processing into the plot server, and
investigating basic interop with Matplotlib objects.

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