[Matplotlib-users] Can't place text nest to another one

[Ryszard Kubiak]

Thank you, Thomas, for your reply. You are right that I have to use an 
appropriate transofrm to turn canvas points yielded by 
get_window_extent() to the actual Axes's coordinates. The 
transforms.offset_copy(...) function came to my rescue.

Thanks again,
Ryszard

> The problem is that we do not know how big the text will be until we 
> actually render it so `abc.get_window_extent` is lying.
>
> I suggest looking at 
> https://matplotlib.org/tutorials/text/annotations.html#using-complex-coordinates-with-annotations which 
> shows how to defer the calling of `get_window_extent` until as late as 
> possible.
>
> Tom
>
> On Mon, Apr 9, 2018 at 1:35 PM Ryszard Kubiak <rhkubiak at gmail.com 
> <mailto:rhkubiak at gmail.com>> wrote:
>
>     Hello everybody,
>
>     Please, take a look at the code below. I want to place the text 'xyz'
>     just next to 'abc'. The reusult is that 'xyz' goes much further
>     right to
>     'abc' and there is a gap between the texts.
>
>     The width of the bbox happens to be 40, as the printout shows. The
>     'xyz'
>     text is indeed at 40. However, one can see on the canvas that 'abc'
>     width is only about 6.5. Thus, there is a mismatch between what
>     get_window_extent calculates (40) and what the text size is on the
>     canvas (6.5).
>
>     What am I doing wrong?
>
>     Best Regards,
>     Ryszard
>
>     import matplotlib.pyplot as plt
>
>     fig = plt.figure(frameon=False)
>     ax = plt.Axes(fig, [0.0, 0.0, 1.0, 1.0])
>     ax.set_axis_off()
>     ax.set_xlim(0, 100)
>     ax.set_ylim(0, 100)
>     fig.add_axes(ax)
>     renderer = fig.canvas.get_renderer()
>     abc = plt.text(0, 0, 'abc', fontsize=20, bbox=dict(facecolor='red',
>     alpha=0.2, pad=0))
>     bbox = abc.get_window_extent(renderer=renderer)
>     print('width:', bbox.width, 'height:', bbox.height)
>     xyz = plt.text(bbox.width, 0, 'xyz', fontsize=20,
>     bbox=dict(facecolor='blue', alpha=0.2, pad=0))
>     plt.show()
>
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