I'm working on updating matplotlib in Sage to 1.0. We're running into
a problem where it seems that the fontList.cache is not being updated.
I've included an example session below. The .matplotlib directory is
accessible here:
http://sage.math.washington.edu/home/jason/.matplotlib/ The problem
seems to be that it is looking for a file that does not exist:
[ja...@sage:/scratch/jason/sage-4.6.alpha2]$ ls
/scratch/grout/sage-4.5.3/local/lib/python2.6/site-packages/matplotlib/mpl-data/fonts/ttf/Vera.ttf
ls: cannot access
/scratch/grout/sage-4.5.3/local/lib/python2.6/site-packages/matplotlib/mpl-data/fonts/ttf/Vera.ttf:
No such file or directory
Does anyone have any idea what is going on? Why is the fontList.cache
file not being updated, instead of trying to access a path that doesn't
exist?
A related question is: I see the variable USE_FONTCONFIG in
font_manager.py. It says it is experimental. How stable is that code?
It's tempting to switch to using fontconfig.
Thanks,
Jason
Here is my example session:
In [1]: from pylab import *
In [2]: text(0.5, 0.5, 'text 0')
Out[2]: <matplotlib.text.Text object at 0x18e7b50>
In [3]: savefig('test.png')
ERROR: An unexpected error occurred while tokenizing input
The following traceback may be corrupted or invalid
The error message is: ('EOF in multi-line statement', (532, 0))
ERROR: An unexpected error occurred while tokenizing input
The following traceback may be corrupted or invalid
The error message is: ('EOF in multi-line statement', (643, 0))
ERROR: An unexpected error occurred while tokenizing input
The following traceback may be corrupted or invalid
The error message is: ('EOF in multi-line statement', (10, 0))
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
/mnt/usb1/scratch/jason/sage-4.6.alpha2/<ipython console> in <module>()
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/pyplot.pyc
in savefig(*args, **kwargs)
361 def savefig(*args, **kwargs):
362 fig = gcf()
--> 363 return fig.savefig(*args, **kwargs)
364
365 @docstring.copy_dedent(Figure.ginput)
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/figure.pyc
in savefig(self, *args, **kwargs)
1082 kwargs.setdefault('edgecolor',
rcParams['savefig.edgecolor'])
1083
-> 1084 self.canvas.print_figure(*args, **kwargs)
1085
1086 if transparent:
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/backend_bases.pyc
in print_figure(self, filename, dpi, facecolor, edgecolor, orientation,
format, **kwargs)
1884 orientation=orientation,
1885 bbox_inches_restore=_bbox_inches_restore,
-> 1886 **kwargs)
1887 finally:
1888 if bbox_inches and restore_bbox:
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/backends/backend_agg.pyc
in print_png(self, filename_or_obj, *args, **kwargs)
436
437 def print_png(self, filename_or_obj, *args, **kwargs):
--> 438 FigureCanvasAgg.draw(self)
439 renderer = self.get_renderer()
440 original_dpi = renderer.dpi
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/backends/backend_agg.pyc
in draw(self)
392
393 self.renderer = self.get_renderer()
--> 394 self.figure.draw(self.renderer)
395
396 def get_renderer(self):
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/artist.pyc
in draw_wrapper(artist, renderer, *args, **kwargs)
53 def draw_wrapper(artist, renderer, *args, **kwargs):
54 before(artist, renderer)
---> 55 draw(artist, renderer, *args, **kwargs)
56 after(artist, renderer)
57
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/figure.pyc
in draw(self, renderer)
796 dsu.sort(key=itemgetter(0))
797 for zorder, func, args in dsu:
--> 798 func(*args)
799
800 renderer.close_group('figure')
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/artist.pyc
in draw_wrapper(artist, renderer, *args, **kwargs)
53 def draw_wrapper(artist, renderer, *args, **kwargs):
54 before(artist, renderer)
---> 55 draw(artist, renderer, *args, **kwargs)
56 after(artist, renderer)
57
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/axes.pyc
in draw(self, renderer, inframe)
1932
1933 for zorder, a in dsu:
-> 1934 a.draw(renderer)
1935
1936 renderer.close_group('axes')
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/artist.pyc
in draw_wrapper(artist, renderer, *args, **kwargs)
53 def draw_wrapper(artist, renderer, *args, **kwargs):
54 before(artist, renderer)
---> 55 draw(artist, renderer, *args, **kwargs)
56 after(artist, renderer)
57
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/axis.pyc
in draw(self, renderer, *args, **kwargs)
1015 tick.set_label1(label)
1016 tick.set_label2(label)
-> 1017 tick.draw(renderer)
1018 if tick.label1On and tick.label1.get_visible():
1019 extent = tick.label1.get_window_extent(renderer)
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/artist.pyc
in draw_wrapper(artist, renderer, *args, **kwargs)
53 def draw_wrapper(artist, renderer, *args, **kwargs):
54 before(artist, renderer)
---> 55 draw(artist, renderer, *args, **kwargs)
56 after(artist, renderer)
57
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/axis.pyc
in draw(self, renderer)
232
233 if self.label1On:
--> 234 self.label1.draw(renderer)
235 if self.label2On:
236 self.label2.draw(renderer)
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/artist.pyc
in draw_wrapper(artist, renderer, *args, **kwargs)
53 def draw_wrapper(artist, renderer, *args, **kwargs):
54 before(artist, renderer)
---> 55 draw(artist, renderer, *args, **kwargs)
56 after(artist, renderer)
57
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/text.pyc
in draw(self, renderer)
522 renderer.open_group('text', self.get_gid())
523
--> 524 bbox, info = self._get_layout(renderer)
525 trans = self.get_transform()
526
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/text.pyc
in _get_layout(self, renderer)
296 tmp, lp_h, lp_bl = get_text_width_height_descent('lp',
297
self._fontproperties,
--> 298
ismath=False)
299 offsety = lp_h * self._linespacing
300
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/backends/backend_agg.pyc
in get_text_width_height_descent(self, s, prop, ismath)
178
179 flags = self._get_hinting_flag()
--> 180 font = self._get_agg_font(prop)
181 font.set_text(s, 0.0, flags=flags) # the width and
height of unrotated string
182 w, h = font.get_width_height()
/mnt/usb1/scratch/jason/sage-4.6.alpha2/local/lib/python2.6/site-packages/matplotlib/backends/backend_agg.pyc
in _get_agg_font(self, prop)
219 font = self._fontd.get(fname)
220 if font is None:
--> 221 font = FT2Font(str(fname))
222 self._fontd[fname] = font
223 self._fontd[key] = font
RuntimeError: Could not open facefile
/scratch/grout/sage-4.5.3/local/lib/python2.6/site-packages/matplotlib/mpl-data/fonts/ttf/Vera.ttf;
Cannot_Open_Resource
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