matplotlib-users

[Matplotlib-users] Mac O$, Anaconda and movie

[Christophe B. <pro...@gm...>]

Hello.

In this page<http://matplotlib.org/1.3.1/examples/animation/moviewriter.html>,
there is the example *moviewriter.py*. I can't use, and the error message
is the following one.

*File "//anaconda/lib/python2.7/site-packages/matplotlib/animation.py",
line 64, in __getitem__    return self.avail[name]*
*KeyError: 'ffmpeg'*

Is there a way to use such kind of functionnality with Anaconda ?

If not, is there a way to produce at least a folder containing each frame
picture ?

Christophe BAL

Re: [Matplotlib-users] Mac O$, Anaconda and movie

[Christophe B. <pro...@gm...>]

Hello,
I've found how to do that.

   1. Donwload the binary ffmpeg from here <http://ffmpegmac.net/>.
   2. Copy this binary file into the folder anaconda/bin.

That's all !



2014-03-19 10:40 GMT+01:00 Christophe Bal <pro...@gm...>:

> Hello.
>
> In this page<http://matplotlib.org/1.3.1/examples/animation/moviewriter.html>,
> there is the example *moviewriter.py*. I can't use, and the error message
> is the following one.
>
> *File "//anaconda/lib/python2.7/site-packages/matplotlib/animation.py",
> line 64, in __getitem__    return self.avail[name]*
> *KeyError: 'ffmpeg'*
>
> Is there a way to use such kind of functionnality with Anaconda ?
>
> If not, is there a way to produce at least a folder containing each frame
> picture ?
>
> Christophe BAL
>

[Matplotlib-users] Basemap with OO interface

[Remo G. <su...@li...>]

Dear matplotlib users,

I'm having trouble using Basemap through the object oriented interface
of Matplotlib. All the examples on the website use pyplot. But that does
not work if plots are generated in a parallel environment, i.e., in a
web application, since pyplot is obviously not thread safe.

Does anyone have a working example of Basemap without pyplot?
One of the issues I'm having is that

coastlines = map.drawcoastlines(linewidth=0.25)

does not show any coastlines. The underlying figure is created like this:

from matplotlib.backends.backend_agg import FigureCanvasAgg as FigureCanvas
from matplotlib.figure import Figure, Axes

fig = Figure()
canvas = FigureCanvas(fig)
ax = Axes(fig, [0., 0., 1., 1.])
fig.add_axes(ax)

I feel a bit lost here. Any help is appreciated.

Cheers,
Remo

Re: [Matplotlib-users] Basemap with OO interface

[Remo G. <su...@li...>]

Stupid me! I overlooked parameter 'ax' of class Basemap. You can pass an
axis when creating a Basemap instance:

ax = fig.add_axes([0., 0., 1., 1.])
map = Basemap(...., ax=ax)

Best,
Remo


On 03/19/2014 04:41 PM, Remo Goetschi wrote:
> Dear matplotlib users,
> 
> I'm having trouble using Basemap through the object oriented interface
> of Matplotlib. All the examples on the website use pyplot. But that does
> not work if plots are generated in a parallel environment, i.e., in a
> web application, since pyplot is obviously not thread safe.
> 
> Does anyone have a working example of Basemap without pyplot?
> One of the issues I'm having is that
> 
> coastlines = map.drawcoastlines(linewidth=0.25)
> 
> does not show any coastlines. The underlying figure is created like this:
> 
> from matplotlib.backends.backend_agg import FigureCanvasAgg as FigureCanvas
> from matplotlib.figure import Figure, Axes
> 
> fig = Figure()
> canvas = FigureCanvas(fig)
> ax = Axes(fig, [0., 0., 1., 1.])
> fig.add_axes(ax)
> 
> I feel a bit lost here. Any help is appreciated.
> 
> Cheers,
> Remo
> 
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