matplotlib-users Mailing List for matplotlib

On 03/18/2011 11:15 AM, Yves Revaz wrote:
> Dear matplotlib users,
>
> The following very simple script generate an explosion of ram memory :
>
> from numpy  import *
> import pylab as pl
>
> while 1:
>     data = random.random((512,512))
>     pl.imshow(data)

Try adding "pl.clf()" or "pl.cla().
Without that, each call to imshow is adding an image without deleting 
the previous one.

Eric


>
>
> How is it possible to loop over imshow, without having this problem ?
>
> Thanks in advance,
>
> yves
>
>
>
>
>
>

Dear matplotlib users,

The following very simple script generate an explosion of ram memory :

from numpy  import *
import pylab as pl

while 1:
   data = random.random((512,512))
   pl.imshow(data)


How is it possible to loop over imshow, without having this problem ?

Thanks in advance,

yves






-- 
                                                  (o o)
--------------------------------------------oOO--(_)--OOo-------
   Yves Revaz
   Laboratory of Astrophysics EPFL
   Observatoire de Sauverny     Tel : ++ 41 22 379 24 28
   51. Ch. des Maillettes       Fax : ++ 41 22 379 22 05
   1290 Sauverny             e-mail : Yve...@ep...
   SWITZERLAND                  Web : http://www.lunix.ch/revaz/
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On 03/18/2011 03:56 AM, Michael Droettboom wrote:
> There is an example showing how to create an MPEG-4 movie here:
>
> http://matplotlib.sourceforge.net/examples/animation/movie_demo.html
>
> Creating an animated gif would just be a matter of using the correct third-party tool that can combine a set of image frames.

For example, gifsicle or ImageMagick.

Eric

>
> Mike
>
> ________________________________________
> From: Rita [rmo...@gm...]
> Sent: Friday, March 18, 2011 7:49 AM
> To: mat...@li...
> Subject: [Matplotlib-users] png to slideshow (gif)
>
> If I have 30 PNGs and i would like to make a slideshow or an animated gif what is the best way to do this? Can matplotlib do this?
>
>
>
> --
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There is an example showing how to create an MPEG-4 movie here:

http://matplotlib.sourceforge.net/examples/animation/movie_demo.html

Creating an animated gif would just be a matter of using the correct third-party tool that can combine a set of image frames.

Mike

________________________________________
From: Rita [rmo...@gm...]
Sent: Friday, March 18, 2011 7:49 AM
To: mat...@li...
Subject: [Matplotlib-users] png to slideshow (gif)

If I have 30 PNGs and i would like to make a slideshow or an animated gif what is the best way to do this? Can matplotlib do this?



--
--- Get your facts first, then you can distort them as you please.--

Hi everyone. I was trying to produce an irregular heat map broken down by day/weeks, as excellently shown here:

http://revolution-computing.typepad.com/.a/6a010534b1db25970b0120a63e9936970b-500wi

(source: http://stackoverflow.com/questions/2076370/most-underused-data-visualization)

How would you proceed to achieve such a result with matplotlib?

My initial idea was to use different images (one per year), by generating the pixels by manually binning my data. Then use imgshow with a different subplot for each year.
Then place ytics/xtics and the colorbar manually.

I'm wondering if there's a better way though. In this case ggplot2 is so succinct that makes me cringe.

Thanks.

If I have 30 PNGs and i would like to make a slideshow or an animated gif
what is the best way to do this? Can matplotlib do this?



-- 
--- Get your facts first, then you can distort them as you please.--

My legend is going to have a series of entries that look like:

u=2,p=3
u=1,p=4
...


I want to add some (short) text that explains what u and p are.

I'm thinking to get the coordinates of the legend box so I can then annotate?

How would I get the coordinates of the legend box?  Or is there some 
better/easier way to do what I want?