TickLabels.simplify_labels corrupts LaTeX label strings on Mollweide axes #8004

lpsinger · 2018-10-27T15:53:29Z

This example script that makes a Mollweide projection plot with WCSAxes with matplotlib's text.usetex rcparam set to True crashes. By setting breakpoints, I found that it is the declination axis that is getting corrupted, and it is happening in TickLabels.simplify_labels.

test.py

#!/usr/bin/env python
import matplotlib
matplotlib.rcParams['text.usetex'] = True
from astropy import units as u
from astropy.visualization.wcsaxes.frame import EllipticalFrame
from astropy.wcs import WCS
from matplotlib import pyplot as plt
import numpy as np

header = {
    'NAXIS': 2,
    'NAXIS1': 360,
    'NAXIS2': 180,
    'CRPIX1': 180.5,
    'CRPIX2': 90.5,
    'CRVAL1': 180.0,
    'CRVAL2': 0.0,
    'CDELT1': -2 * np.sqrt(2) / np.pi,
    'CDELT2': 2 * np.sqrt(2) / np.pi,
    'CTYPE1': 'RA---MOL',
    'CTYPE2': 'DEC--MOL',
    'RADESYS': 'ICRS'}

wcs = WCS(header)
ax = plt.axes(frame_class=EllipticalFrame, projection=wcs)
ax.set_xlim(-0.5, header['NAXIS1'] - 0.5)
ax.set_ylim(-0.5, header['NAXIS2'] - 0.5)
ax.coords[0].set_ticks(exclude_overlapping=True, spacing=45 * u.deg)
ax.coords[1].set_ticks(exclude_overlapping=True, spacing=30 * u.deg)
ax.grid()
plt.savefig('test.png')

Output

$ ./test.py 
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/texmanager.py", line 298, in _run_checked_subprocess
    stderr=subprocess.STDOUT)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 389, in check_output
    **kwargs).stdout
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 481, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['latex', '-interaction=nonstopmode', '--halt-on-error', '/Users/lpsinger/.matplotlib/tex.cache/3a1d4a91ea3bce281dc11a6a0700d7e5.tex']' returned non-zero exit status 1.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "./test.py", line 31, in <module>
    plt.savefig('test.png')
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/pyplot.py", line 688, in savefig
    res = fig.savefig(*args, **kwargs)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/figure.py", line 2097, in savefig
    self.canvas.print_figure(fname, **kwargs)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/backend_bases.py", line 2075, in print_figure
    **kwargs)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/backends/backend_agg.py", line 510, in print_png
    FigureCanvasAgg.draw(self)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/backends/backend_agg.py", line 402, in draw
    self.figure.draw(self.renderer)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/artist.py", line 50, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/figure.py", line 1652, in draw
    renderer, self, artists, self.suppressComposite)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/image.py", line 138, in _draw_list_compositing_images
    a.draw(renderer)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/visualization/wcsaxes/core.py", line 392, in draw
    super().draw(renderer, inframe=inframe)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/artist.py", line 50, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/axes/_base.py", line 2604, in draw
    mimage._draw_list_compositing_images(renderer, self, artists)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/image.py", line 138, in _draw_list_compositing_images
    a.draw(renderer)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/visualization/wcsaxes/core.py", line 48, in draw
    self.axes.draw_wcsaxes(renderer)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/visualization/wcsaxes/core.py", line 356, in draw_wcsaxes
    ticks_locs=ticks_locs[coord])
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/visualization/wcsaxes/coordinate_helpers.py", line 483, in _draw_ticks
    ticklabels_bbox=ticklabels_bbox)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/visualization/wcsaxes/ticklabels.py", line 157, in draw
    bb = super().get_window_extent(renderer)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/text.py", line 929, in get_window_extent
    bbox, info, descent = self._get_layout(self._renderer)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/text.py", line 313, in _get_layout
    ismath=ismath)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/backends/backend_agg.py", line 209, in get_text_width_height_descent
    s, fontsize, renderer=self)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/texmanager.py", line 464, in get_text_width_height_descent
    dvifile = self.make_dvi(tex, fontsize)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/texmanager.py", line 328, in make_dvi
    texfile], tex)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/matplotlib/texmanager.py", line 307, in _run_checked_subprocess
    exc=exc.output.decode('utf-8')))
RuntimeError: latex was not able to process the following string:
b'$'

Here is the full report generated by latex:
This is pdfTeX, Version 3.14159265-2.6-1.40.19 (TeX Live 2018/MacPorts 2018.47642_7) (preloaded format=latex)
 restricted \write18 enabled.
entering extended mode
(/Users/lpsinger/.matplotlib/tex.cache/3a1d4a91ea3bce281dc11a6a0700d7e5.tex
LaTeX2e <2018-04-01> patch level 2
Babel <3.18> and hyphenation patterns for 46 language(s) loaded.
(/opt/local/share/texmf-texlive/tex/latex/base/article.cls
Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
(/opt/local/share/texmf-texlive/tex/latex/base/size10.clo))
(/opt/local/share/texmf-texlive/tex/latex/type1cm/type1cm.sty)
(/opt/local/share/texmf-texlive/tex/latex/base/textcomp.sty
(/opt/local/share/texmf-texlive/tex/latex/base/ts1enc.def
(/opt/local/share/texmf-texlive/tex/latex/base/ts1enc.dfu)))
(/opt/local/share/texmf-texlive/tex/latex/base/inputenc.sty)
(/opt/local/share/texmf-texlive/tex/latex/geometry/geometry.sty
(/opt/local/share/texmf-texlive/tex/latex/graphics/keyval.sty)
(/opt/local/share/texmf-texlive/tex/generic/oberdiek/ifpdf.sty)
(/opt/local/share/texmf-texlive/tex/generic/oberdiek/ifvtex.sty)
(/opt/local/share/texmf-texlive/tex/generic/ifxetex/ifxetex.sty)

Package geometry Warning: Over-specification in `h'-direction.
    `width' (5058.9pt) is ignored.


Package geometry Warning: Over-specification in `v'-direction.
    `height' (5058.9pt) is ignored.

) (./3a1d4a91ea3bce281dc11a6a0700d7e5.aux)
(/opt/local/share/texmf-texlive/tex/latex/base/ts1cmr.fd)
*geometry* driver: auto-detecting
*geometry* detected driver: dvips
! Extra }, or forgotten $.
<recently read> }
                 
l.14 \fontsize{10.000000}{12.500000}{\sffamily $}
                                                 
No pages of output.
Transcript written on 3a1d4a91ea3bce281dc11a6a0700d7e5.log.

The text was updated successfully, but these errors were encountered:

Fixes astropy#8004.

astrofrog added Bug visualization.wcsaxes labels Oct 27, 2018

lpsinger added a commit to lpsinger/gwcelery that referenced this issue Dec 19, 2018

Work around astropy/astropy#8004

adf7ca2

astrofrog added Effort-low Package-intermediate labels Jun 18, 2019

lpsinger added a commit to lpsinger/astropy that referenced this issue Feb 27, 2020

Fix LaTeX error due to labels that become empty in simplify_labels

37f8b93

Fixes astropy#8004.

lpsinger mentioned this issue Feb 27, 2020

Fix LaTeX error due to labels that become empty in simplify_labels #9991

Merged

lpsinger added a commit to lpsinger/astropy that referenced this issue Feb 27, 2020

Fix LaTeX error due to labels that become empty in simplify_labels

f8a7595

Fixes astropy#8004.

lpsinger added a commit to lpsinger/astropy that referenced this issue Mar 12, 2020

Fix LaTeX error due to labels that become empty in simplify_labels

e084e87

Fixes astropy#8004.

lpsinger added a commit to lpsinger/astropy that referenced this issue Mar 12, 2020

Fix LaTeX error due to labels that become empty in simplify_labels

27431a5

Fixes astropy#8004.

lpsinger added a commit to lpsinger/astropy that referenced this issue Mar 12, 2020

Fix LaTeX error due to labels that become empty in simplify_labels

f0deda9

Fixes astropy#8004.

lpsinger added a commit to lpsinger/astropy that referenced this issue Mar 12, 2020

Fix LaTeX error due to labels that become empty in simplify_labels

1f8d1f6

Fixes astropy#8004.

lpsinger added a commit to lpsinger/astropy that referenced this issue Mar 12, 2020

Fix LaTeX error due to labels that become empty in simplify_labels

c30376d

Fixes astropy#8004.

lpsinger added a commit to lpsinger/astropy that referenced this issue Mar 12, 2020

Fix LaTeX error due to labels that become empty in simplify_labels

3faef62

Fixes astropy#8004.

lpsinger added a commit to lpsinger/astropy that referenced this issue Mar 12, 2020

Fix LaTeX error due to labels that become empty in simplify_labels

045ec8f

Fixes astropy#8004.

lpsinger added a commit to lpsinger/astropy that referenced this issue Mar 19, 2020

Fix LaTeX error due to labels that become empty in simplify_labels

f449dd0

Fixes astropy#8004.

lpsinger added a commit to lpsinger/astropy that referenced this issue Mar 19, 2020

Fix LaTeX error due to labels that become empty in simplify_labels

218d62e

Fixes astropy#8004.

lpsinger added a commit to lpsinger/astropy that referenced this issue Mar 19, 2020

Fix LaTeX error due to labels that become empty in simplify_labels

5c9bcb4

Fixes astropy#8004.

bsipocz closed this as completed in #9991 Mar 20, 2020

lpsinger added a commit to lpsinger/gwcelery that referenced this issue Jan 14, 2021

Remove workaround for astropy/astropy#8004, fixed upstream

182c097

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TickLabels.simplify_labels corrupts LaTeX label strings on Mollweide axes #8004

TickLabels.simplify_labels corrupts LaTeX label strings on Mollweide axes #8004

lpsinger commented Oct 27, 2018

TickLabels.simplify_labels corrupts LaTeX label strings on Mollweide axes #8004

TickLabels.simplify_labels corrupts LaTeX label strings on Mollweide axes #8004

Comments

lpsinger commented Oct 27, 2018

test.py

Output