It turns out that when axes_grid toolkit is used and there are some
ticks does not have associated ticklabels (i.e., minor ticks), it
tries to call the "get_texts_widths_heights_descents" method with
empty string.
The following patch prevent this.
--- a/lib/mpl_toolkits/axisartist/axis_artist.py
+++ b/lib/mpl_toolkits/axisartist/axis_artist.py
@@ -769,6 +769,7 @@ class TickLabels(AxisLabel, AttributeCopier): # mtext.Text
#self._set_offset_radius(r)
for (x, y), a, l in self._locs_angles_labels:
+ if not l.strip(): continue
self._set_ref_angle(a) #+ add_angle
self.set_x(x)
self.set_y(y)
@@ -811,6 +812,7 @@ class TickLabels(AxisLabel, AttributeCopier): # mtext.Text
"""
whd_list = []
for (x, y), a, l in self._locs_angles_labels:
+ if not l.strip(): continue
clean_line, ismath = self.is_math_text(l)
whd = renderer.get_text_width_height_descent(
clean_line, self._fontproperties, ismath=ismath)
But it may be still safer to return 0,0,0 when empty string is given
for *get_texts_widths_heights_descents*?
Regards,
-JJ
On Thu, May 20, 2010 at 2:36 PM, Michael Droettboom <md...@stsci.edu> wrote:
> The following patch avoids the error with your attached plot. I'm sure
> if it the right fix though -- I'm not sure why empty strings are being
> sent this far along, and I'm also not seeing any ticks along the top.
>
> Mike
>
> Index: lib/matplotlib/texmanager.py
> ===================================================================
> --- lib/matplotlib/texmanager.py (revision 8329)
> +++ lib/matplotlib/texmanager.py (working copy)
> @@ -578,6 +578,9 @@
> return width, heigth and descent of the text.
> """
>
> + if tex.strip() == '':
> + return 0, 0, 0
> +
> if renderer:
> dpi_fraction = renderer.points_to_pixels(1.)
> else:
>
>
> On 05/20/2010 02:11 PM, João Luís Silva wrote:
>> from matplotlib import rc
>> rc('text', usetex=True)
>>
>> from mpl_toolkits.axes_grid.parasite_axes import SubplotHost
>> import numpy as np
>> import matplotlib.pyplot as plt
>>
>> fig = plt.figure(1)
>> ax = SubplotHost(fig, 111)
>> fig.add_subplot(ax)
>> x = np.arange(1.0,10.0,0.1)
>> ax.semilogy(x,x**2)
>> plt.show()
>>
>
>
> --
> Michael Droettboom
> Science Software Branch
> Space Telescope Science Institute
> Baltimore, Maryland, USA
>
>
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>
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