Ah. I wasn't quite clear on what you were trying to do before.
There's actually a bit of "magic" in there that automatically adjusts
the xlabel so it is lower than the xtick values. (If you rotate the
xtick values, you can see this in action). So it actually does position
things how you want, but then when it goes to draw it is automatically
lowering the text a little to make room.
Since I don't see an easy way around this magic, you could not use
xlabel at all and just add some Axes text:
from matplotlib import text
text = text.Text(1, 0, "Foo")
text.set_transform(offset_copy(axes.transAxes, axes.figure, x=5,
y=0, units='points'))
text.set_clip_on(False)
axes.add_artist(text)
Completely non-obvious of course :) If there's enough need for the kind
of xlabels you're making, we should probably provide a way to do this
directly, but it would have to be well-tested to ensure it didn't break
existing functionality.
Mike
[email protected] wrote:
> Michael Droettboom wrote:
>> The xlabel doesn't use the data transform, it uses the axes
>> transform, where the edges of the axes always go from 0.0 to 1.0,
>> regardless of the data extents. Therefore, tou can start with the
>> label's default transform:
>>
>> trans = xlabel.get_transform()
>>
>> and use that as the basis for the offset transform
>>
>> offtrans = offset_copy(trans, subplot.figure, x=5, y=0, units='points')
>>
>> and set the label's position, alignment and transform:
>>
>> xlabel.set_position((1, 0))
>> xlabel.set_ha('right')
>> xlabel.set_transform(offtrans)
>>
>> Hope that does what you're after.
>
>
> Thanks! This helps a lot.
> I notice with the following, the x-axis label is lined up with its
> baseline equal to the baseline of the tick labels. I'd like the
> baseline to be the same as the actual axis line. What should I do to
> get the baseline of the x-axis label to be the actual axis line? I've
> been working on this for a while tonight, and I've made a lot of
> progress, but now I'm getting confused. Is there some sort of padding
> going on, even though I set labelpad=0? Is the problem I'm seeing
> because I started from xlabel.get_transform(), which already has the
> padding builtin?
>
> from matplotlib.transforms import offset_copy
> subplot.xaxis.labelpad=0
> xlabel=subplot.xaxis.get_label()
> trans=xlabel.get_transform()
> xlabel.set_horizontalalignment('left')
> xlabel.set_verticalalignment('baseline')
>
> xlabel.set_transform(offset_copy(trans,subplot.figure,x=5,y=0,units='points'))
>
>
> xlabel.set_position((1,0))
>
>
> Thanks,
>
> Jason
>
> --
> Jason Grout
>
--
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA
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