Re: [Matplotlib-users] Creating axes with fixed distance from figure edge

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

What might be more generally useful is to make it easier to specify which
coordinate system you wish some spec to apply to. To be frank, I can never
keep the transform names straight, and it isn't possible to specify it at
all in some places.
On Sep 9, 2015 6:04 PM, "Thomas Robitaille" <tho...@gm...>
wrote:

> I managed to write an Axes sub-class to do this:
>
> https://gist.github.com/astrofrog/8d579ea83e578a9cdb99
>
> Try running this then resize the figure and the margin between axes
> and figure edge will stay constant.
>
> Is this something that would be useful to have in Matplotlib itself? I
> could foresee something like:
>
> fig.add_axes([0.1, 0.1, 0.8, 0.8], preserve_absolute_margins=True)
>
> If this would be useful, I can open a pull request.
>
> Cheers,
> Tom
>
> On 9 September 2015 at 23:29, Thomas Robitaille
> <tho...@gm...> wrote:
> > Thanks Eric - unfortunately I need to be able to resize the figure
> > interactively and have the axes follow.
> >
> > So an alternative that would be equally useful for me would be to
> > specify axes using add_subplot or add_axes but then essentially have
> > an option to say that the distance to the edge of the figure should be
> > preserved when resizing. In other words, I'm not too concerned about
> > whether I specify the original axes position in relative units or in
> > inches, but the important thing is that the distance to the edge of
> > the figure stays constant in absolute terms.
> >
> > Is this something that would be easy to build as an Axes subclass?
> >
> > Cheers,
> > Tom
> >
> >
> >
> > On 9 September 2015 at 23:12, Eric Firing <ef...@ha...> wrote:
> >> On 2015/09/09 11:01 AM, Thomas Robitaille wrote:
> >>>
> >>> Hi everyone,
> >>>
> >>> I am interested in creating axes in an interactive figure where the
> >>> distance from the spines of the axes to the figure edge are constant
> >>> in absolute terms.
> >>>
> >>> To clarify what I mean, when using add_axes([0.1, 0.1, 0.8, 0.8]), the
> >>> spines of the axes are always located a distance from the edge of the
> >>> figure that is 10% of the size of the figure. However, in my case,
> >>> since the font size is constant, I want to be able to say that the
> >>> spines should always be e.g. 0.5" from the edge of the figure, which
> >>> would avoid wasting space when making the figure larger.
> >>>
> >>> Is there a way to do this currently?
> >>
> >>
> >> This is what I use for positioning in inches:
> >>
> >> def axes_inches(fig, rect, **kw):
> >>     """
> >>     Wrapper for Figure.add_axes in which *rect* is given in inches.
> >>     The translation to normalized coordinates is done immediately
> >>     based on the present figsize.
> >>
> >>     *rect* is left, bottom, width, height in inches
> >>     *kw* are passed to Figure.add_axes
> >>
> >>     """
> >>
> >>     fw = fig.get_figwidth()
> >>     fh = fig.get_figheight()
> >>     l, b, w, h = rect
> >>     relrect = [l / fw, b / fh, w / fw, h / fh]
> >>     ax = fig.add_axes(relrect, **kw)
> >>     return ax
> >>
> >> Note, however, that this works correctly only if you don't change
> figsize
> >> after calling it, so maybe it is not what you are looking for.
> >>
> >> Eric
> >>
> >>>
> >>> (I am aware of set_tight_layout which would result in something
> >>> similar, but this is not what I am after - I would like to be able to
> >>> specify the exact absolute distance from the figure edge)
> >>>
> >>> Thanks!
> >>> Tom
> >>>
> >>>
> >>>
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