matplotlib-devel Mailing List for matplotlib

Exciting stuff!

The latency would be an important factor for the user experience, but this neatly sidesteps a lot of the JS issues. This would keep the main matplotlib machinery on the Python side, which is great.

We could still do simple high-speed annotations requiring very low latency such as cursors or selection rectangles on the JS side. I therefore don't foresee the requirement of sending hundreds or thousands of PNGs during e.g. a simple zoom (smooth resizing might be more intensive...).

Ironically, one of the motivations for the mplh5canvas backend is also to send *less* data over the network, as matplotlib's path simplification would effectively compress large data sets. However, path simplification does not yet apply to scatter plots, an important use case for us (although there are ways to implement that with clustering algorithms).

Obviously, a large number of vector operations could still end up being more data than a PNG file, where this idea will work better. I'm very keen to see how this pans out!

Regards,
Ludwig

That looks nice.

On a related note, should the link below the logo not point to
matplotlib.org since  http://matplotlib.sf.net/ just redirects to this site?

In addition it the python code for the sidebar illustrations on the
front side i.e.
http://matplotlib.org/_static/logo_sidebar_horiz.png available somewhere.
The polar plot is clipped in the top an bottom and it would be nice
to fix that and add these plot examples to the screenshot page opened
when clicking on the image.

Plots similar to 1 and 3 are there but no contour plot is shown.

Jens

On Fri, Oct 12, 2012 at 2:47 PM, Benjamin Root <ben...@ou...> wrote:
> Oh, that is *much* better.  Thank you!
>
> Ben Root
>
>
> On Fri, Oct 12, 2012 at 8:44 AM, Michael Droettboom <md...@st...> wrote:
>>
>> It is now fixed.  I just uploaded a higher resolution image of the same
>> thing.
>>
>> Mike
>>
>> On 10/10/2012 04:31 PM, Damon McDougall wrote:
>> > On Wed, Oct 10, 2012 at 7:36 PM, Benjamin Root <ben...@ou...> wrote:
>> >> Looks like github has changed the layout of the default landing page
>> >> for any
>> >> github account.  This now has the account's profile image shown much
>> >> larger
>> >> than originally intended.  Our front page now has a very pixelated logo
>> >> on
>> >> display.  Given how much we pride ourselves on high-quality images, we
>> >> should probably fix this:
>> >>
>> >> https://github.com/matplotlib
>> >>
>> >> Cheers!
>> >> Ben Root
>> > This has been bugging me for a while...
>> >
>>
>>
>>
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>
>
>
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On Thu, Oct 11, 2012 at 10:49 PM, Michael Droettboom <md...@st...> wrote:
> I have a proof-of-concept way to make interactive plots in the browser work
> using transparent PNGs described here:
>
> http://mdboom.github.com/blog/2012/10/11/matplotlib-in-the-browser-its-coming/
>
> No PRs yet, because this is miles from ready for that, but it would be
> helpful to get some feedback about how this works in different
> browsers/platforms/network environments etc.

As a bit of spiritual support for the underlying concept, I mostly use
matplotlib via exactly this mechanism, today. Except I didn't want to
modify matplotlib, so my solution is a bit more elaborate:
http://xpra.org/

There's an astonishing amount of nonsense involved in setting up a
headless X server, registering as a window manager and compositing
manager, fighting with the X keyboard model, etc., but at the end of
the day it just works by shipping PNG-style compressed screenshots
over the wire in one direction, and input events over the wire in the
other. Perhaps surprisingly, the result is dramatically more usable
over remote links than vanilla X forwarding is, and it's very
maintainable. So +1 to this approach.

-n

Oh, that is *much* better.  Thank you!

Ben Root

On Fri, Oct 12, 2012 at 8:44 AM, Michael Droettboom <md...@st...> wrote:

> It is now fixed.  I just uploaded a higher resolution image of the same
> thing.
>
> Mike
>
> On 10/10/2012 04:31 PM, Damon McDougall wrote:
> > On Wed, Oct 10, 2012 at 7:36 PM, Benjamin Root <ben...@ou...> wrote:
> >> Looks like github has changed the layout of the default landing page
> for any
> >> github account.  This now has the account's profile image shown much
> larger
> >> than originally intended.  Our front page now has a very pixelated logo
> on
> >> display.  Given how much we pride ourselves on high-quality images, we
> >> should probably fix this:
> >>
> >> https://github.com/matplotlib
> >>
> >> Cheers!
> >> Ben Root
> > This has been bugging me for a while...
> >
>
>
>
> ------------------------------------------------------------------------------
> Don't let slow site performance ruin your business. Deploy New Relic APM
> Deploy New Relic app performance management and know exactly
> what is happening inside your Ruby, Python, PHP, Java, and .NET app
> Try New Relic at no cost today and get our sweet Data Nerd shirt too!
> http://p.sf.net/sfu/newrelic-dev2dev
> _______________________________________________
> Matplotlib-devel mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
>

It is now fixed.  I just uploaded a higher resolution image of the same 
thing.

Mike

On 10/10/2012 04:31 PM, Damon McDougall wrote:
> On Wed, Oct 10, 2012 at 7:36 PM, Benjamin Root <ben...@ou...> wrote:
>> Looks like github has changed the layout of the default landing page for any
>> github account.  This now has the account's profile image shown much larger
>> than originally intended.  Our front page now has a very pixelated logo on
>> display.  Given how much we pride ourselves on high-quality images, we
>> should probably fix this:
>>
>> https://github.com/matplotlib
>>
>> Cheers!
>> Ben Root
> This has been bugging me for a while...
>

It is not clear to me that the stream of PNGs will win in the end.  If
you make a single static plot of a large data set, that is way better
than trying to send the data to the browser and rendering it there.
But if you have to send hundreds or thousands of PNGs to get
interactivity, that benefit may be washed out.  Especially if you have
multiple users interacting with plots - the server could quickly grind
to a halt.  I think we should do tests to see how bad it gets, taking
into account the multiple user question.  The one performance benefit
that I can think of is that you can tune the level of interactivity to
limit the data that comes back.  For large data sets, users might be
willing to settle for less interactivity.  That option doesn't exist
when you send all the data back.

Cheers,

Brian



On Thu, Oct 11, 2012 at 2:49 PM, Michael Droettboom <md...@st...> wrote:
> I have a proof-of-concept way to make interactive plots in the browser work
> using transparent PNGs described here:
>
> http://mdboom.github.com/blog/2012/10/11/matplotlib-in-the-browser-its-coming/
>
> No PRs yet, because this is miles from ready for that, but it would be
> helpful to get some feedback about how this works in different
> browsers/platforms/network environments etc.
>
> Mike
>
> _______________________________________________
> IPython-dev mailing list
> IPy...@sc...
> http://mail.scipy.org/mailman/listinfo/ipython-dev
>



-- 
Brian E. Granger
Cal Poly State University, San Luis Obispo
bgr...@ca... and ell...@gm...