[Matplotlib-users] Need help to solve performance problems

[Benjamin Root]

Sounds like you are describing the need for blitting, which most of the
backends support in one way or another. The blitting pathways were designed
with animations in mind, but I don't see why it couldn't be hijacked for
your use as well. Note, you will have to do manual calls to
copy_from_bbox() and such, but it should be doable.

Ben Root

On Tue, Mar 1, 2016 at 9:21 AM, Holmes, Oliver <Oliver.Holmes at smtonline.de>
wrote:

> Hey all,
>
> I’m trying to use matplotlib on a Raspberry Pi to visualize data the Pi
> receives via serial port - and of course I’m new to Python and matplotlib.
> The visualization need not be online, rather in form of a PDF once no more
> data is received. Then however as quick as possible. Please refer to my SO
> question for more details:
> http://stackoverflow.com/questions/35629471/need-help-to-solve-performance-problems-of-matplotlib-on-a-raspberry-pi
> Nevertheless here is a brief summary: During the better part of an hour my
> program does nothing but wait for input on the serial port, which is
> received once a second. During this waiting time it could already begin
> rendering the chart, and then just save it to file, once it’s done. I have
> not found out how to do this however. Whats more, I have read quite
> discouraging posts concerning the need to recalculate the axes and so
> forth. As an alternative to rendering the entire grid in the program, I
> guess it would be an improvement (speedwise) if I could just use an image
> of the grid and repeat it (as in tiling). But I have not quite found the
> means to do that either. Concerning the grid layout please refer to my
> other SO question
> http://stackoverflow.com/questions/35551080/is-it-possible-to-generate-a-chart-with-this-very-specific-background
> .
>
> Thanks a lot for reading…and perhaps answering :)
>
> Kind regards,
> Oliver Holmes
>
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>
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