Mac O$, Anaconda and movie

Community matplotlib-users
1

Hello.

In this page, 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

2

Hello,
I’ve found how to do that.

  1. Donwload the binary ffmpeg from here.
  2. Copy this binary file into the folder anaconda/bin.
    That’s all !
···

2014-03-19 10:40 GMT+01:00 Christophe Bal <projetmbc@…287…>:

Hello.

In this page, 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

3

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

4

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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