[Matplotlib-users] LaTeX error on semilogy + usetex + SubplotHost
Hi,
I ran into a bug where I get the LaTeX error:
RuntimeError: LaTeX was not able to process the following string:
''
I know it's an uncommon plot, but I need extra (non-uniform) tick labels
at the top so I'm using SubplotHost, on a semilog plot with usetex (so
the fonts look similar to the ones on the paper).
Matplotlib svn r8330 on Ubuntu 9.10.
Regards,
João Silva
Example script: -
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()
-
--
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Re: [Matplotlib-users] LaTeX error on semilogy + usetex + SubplotHost
I cannot reproduce this error.
I'm using r8330 on Linux.
I guess the error does not occur when you use a normal subplot?
Just in case, replace axes_grid with axes_grid1 and see if it makes
any difference, i.e.,
from mpl_toolkits.axes_grid1.parasite_axes import SubplotHost
Regards,
-JJ
On Thu, May 20, 2010 at 2:11 PM, João Luís Silva jsi...@fc.up.pt wrote:
Hi,
I ran into a bug where I get the LaTeX error:
RuntimeError: LaTeX was not able to process the following string:
''
I know it's an uncommon plot, but I need extra (non-uniform) tick labels
at the top so I'm using SubplotHost, on a semilog plot with usetex (so
the fonts look similar to the ones on the paper).
Matplotlib svn r8330 on Ubuntu 9.10.
Regards,
João Silva
Example script: -
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()
-
--
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Re: [Matplotlib-users] LaTeX error on semilogy + usetex + SubplotHost
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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Re: [Matplotlib-users] LaTeX error on semilogy + usetex + SubplotHost
The error may be dependent on the version of latex being used. Yours
may be handling the empty content just fine. (I'm using TexLive 2009 on
RHEL5).
Mike
On 05/20/2010 02:34 PM, Jae-Joon Lee wrote:
I cannot reproduce this error.
I'm using r8330 on Linux.
I guess the error does not occur when you use a normal subplot?
Just in case, replace axes_grid with axes_grid1 and see if it makes
any difference, i.e.,
from mpl_toolkits.axes_grid1.parasite_axes import SubplotHost
Regards,
-JJ
On Thu, May 20, 2010 at 2:11 PM, João Luís Silvajsi...@fc.up.pt wrote:
Hi,
I ran into a bug where I get the LaTeX error:
RuntimeError: LaTeX was not able to process the following string:
''
I know it's an uncommon plot, but I need extra (non-uniform) tick labels
at the top so I'm using SubplotHost, on a semilog plot with usetex (so
the fonts look similar to the ones on the paper).
Matplotlib svn r8330 on Ubuntu 9.10.
Regards,
João Silva
Example script: -
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()
-
--
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Michael Droettboom
Science Software Branch
Space Telescope Science Institute
Baltimore, Maryland, USA
--
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Re: [Matplotlib-users] LaTeX error on semilogy + usetex + SubplotHost
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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Re: [Matplotlib-users] LaTeX error on semilogy + usetex + SubplotHost
Jae-Joon Lee wrote: I cannot reproduce this error. I'm using r8330 on Linux. I guess the error does not occur when you use a normal subplot? Just in case, replace axes_grid with axes_grid1 and see if it makes any difference, i.e., from mpl_toolkits.axes_grid1.parasite_axes import SubplotHost Regards, -JJ I've tried axes_grid1 and it works well. I'm using the default latex (Ubuntu 9.10) latex --version pdfTeX using libpoppler 3.141592-1.40.3-2.2 (Web2C 7.5.6) [etc.] Both the patches presented fixed the problem, thanks. João Silva -- ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
