Re: [Matplotlib-users] Correct way of saving properties for plot reconstruction

[Eric F. <ef...@ha...>]

On 2012/08/23 6:52 PM, Andrew Nelson wrote:
> Dear list,
> apologies for what might be a simple question. I am creating an
> application that uses matplotlib for plotting, using the Qt4Agg backend.
>   I can create the figures without a problem.
>
> However, I wish to save the state of the application, including the
> graphs.  The complicating factor is that the user may have altered the
> appearance of the graphs via a NavigationToolbar.
>
> I have no problems saving the data that makes up the graphs, but how do
> I save the properties of the graphs (line colour, linewidth, etc)?
> I tried using matplotlib.artist.ArtistInspector(Line2D).properties().
> This gives a dictionary of all the properties. However, when I try to
> pickle this I get picking errors:
>
> cPickle.PicklingError: Can't pickle <class
> 'matplotlib.axes.AxesSubplot'>: attribute lookup
> matplotlib.axes.AxesSubplot failed
>
> I am sure that there is an easy way of achieving this, I just can't see
> it in the documentation.  I appreciate any help the list is able to give me.

Maybe there is not an easy way...
See https://github.com/matplotlib/matplotlib/pull/1020.

Eric

>
> regards,
> Andrew
>