Re: [Matplotlib-users] Preserving figure over closes and reopenings of the window

[Benjamin R. <ben...@ou...>]

Maciej,

When you close a figure, just about everything gets destroyed (this is why
you should always savefig() prior to doing a show()). There is a mechanism
for "reloading" a plot using python pickles:
http://stackoverflow.com/questions/7290370/store-and-reload-matplotlib-pyplot-object

As for setting the aspect ratio to 'equal', there is a second optional
argument that indicates which thing should get adjusted to achieve an equal
aspect. By default, it is 'datalim', I think, which adjusts the limits of
the axes. I think if you set it to 'box', it will do what you want (you
might need 'box-forced' if you are sharing axes). Fiddle around with these
settings to get what you want.
http://matplotlib.org/api/axes_api.html#matplotlib.axes.Axes.set_aspect

To have the axes extended on the whole figure area, there are multiple ways
to do that. In particular, you can set the margins for the figure:
http://matplotlib.org/api/pyplot_api.html?highlight=subplots_adjust#matplotlib.pyplot.subplots_adjust

All of this would work just fine with autoscale.

I hope that helps!
Ben Root



On Mon, Aug 25, 2014 at 7:00 AM, Maciej Kurnicki <kur...@gm...>
wrote:

> I'm using matplotlib for drawing lines, points and circles basically. I
> have 2 problems i can't solve by myself and it's hard to solve them not
> digging into source i think.
> First problem: I got an instance of figure class and i want to preserve
> it during closing and reopening the output window. I'm curious what is
> happening after clicking on close button on the main widow and is there
> any way to reopen previously saved figure, and if yes how to save that
> figure for future reopenings.
> Second problem: I want to achieve 3 things simultaneously,
> a) have the axes extended on the whole figure area
> b) unit distance on y axis has to be the same as unit distance on x axis
> c) all above has to work well with autoscale(), i want to have a lot of
> artists on the axes
> The best thing i have is setting aspect as equal and using autoscale,
> but it fix axes to be same lenght and i don't want axes to be same
> length i want the unit distance to be the same
>
> Thanks for any help,
> Maciek
>
>
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