In the FAQ, there is an entry about adjusting subplot parameters to make
room for really long tick labels:
http://matplotlib.sourceforge.net/faq/howto_faq.html#automatically-make-room-for-tick-labels
I made the example a little more general and included a utility function
that takes care of tick labels and other objects on all sides of the
graph (the example only corrects for overflows on the left). This code
might be nice to go into the FAQ. I've attached the code. Please use
it if you think it is good.
Thanks,
Jason
--
Jason Grout
import matplotlib.pyplot as plt
import matplotlib.transforms as mtransforms
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(range(10))
ax.set_yticks((2,5,7))
labels = ax.set_yticklabels(('really, really, really', 'long', 'labels'))
# To test labels on the right side, uncomment below
#ax.yaxis.set_ticks_position('right')
def on_draw(event):
import matplotlib.transforms as mtransforms
figure=event.canvas.figure
bboxes = []
for ax in figure.axes:
bbox = ax.xaxis.get_label().get_window_extent()
# the figure transform goes from relative coords->pixels and we
# want the inverse of that
bboxi = bbox.inverse_transformed(figure.transFigure)
bboxes.append(bboxi)
bbox = ax.yaxis.get_label().get_window_extent()
bboxi = bbox.inverse_transformed(figure.transFigure)
bboxes.append(bboxi)
for label in (ax.get_xticklabels()+ax.get_yticklabels() \
+ ax.get_xticklabels(minor=True) \
+ax.get_yticklabels(minor=True)):
bbox = label.get_window_extent()
bboxi = bbox.inverse_transformed(figure.transFigure)
bboxes.append(bboxi)
# this is the bbox that bounds all the bboxes, again in relative
# figure coords
bbox = mtransforms.Bbox.union(bboxes)
adjusted=adjust_figure_to_contain_bbox(figure,bbox)
if adjusted:
figure.canvas.draw()
return False
def adjust_figure_to_contain_bbox(fig, bbox,pad=1.1):
"""
For each amount we are over (in axes coordinates), we adjust by over*pad
to give ourselves a bit of padding.
"""
adjusted=False
if bbox.xmin<0:
fig.subplots_adjust(left=(fig.subplotpars.left-bbox.xmin*pad))
adjusted=True
if bbox.ymin<0:
fig.subplots_adjust(bottom=(fig.subplotpars.bottom-bbox.ymin*pad))
adjusted=True
if bbox.xmax>1:
fig.subplots_adjust(right=(fig.subplotpars.right-(bbox.xmax-1)*pad))
adjusted=True
if bbox.ymax>1:
fig.subplots_adjust(top=(fig.subplotpars.top-(bbox.ymax-1)*pad))
adjusted=True
return adjusted
fig.canvas.mpl_connect('draw_event', on_draw)
plt.show()
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