Closed
Description
Saving a figure with plt.savefig in svg file format using the cairo backend results in a TypeError. The Traceback is:
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/util/plot.py(814)save_and_close_fig()
-> plt.savefig('plot.svg', transparent=True, dpi=800)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/pyplot.py(689)savefig()
-> res = fig.savefig(*args, **kwargs)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/figure.py(2094)savefig()
-> self.canvas.print_figure(fname, **kwargs)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/backend_bases.py(2075)print_figure()
-> **kwargs)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/backends/backend_cairo.py(569)print_svg()
-> return self._save(fobj, 'svg', *args, **kwargs)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/backends/backend_cairo.py(622)_save()
-> self.figure.draw(renderer)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/artist.py(50)draw_wrapper()
-> return draw(artist, renderer, *args, **kwargs)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/figure.py(1649)draw()
-> renderer, self, artists, self.suppressComposite)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/image.py(138)_draw_list_compositing_images()
-> a.draw(renderer)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/artist.py(50)draw_wrapper()
-> return draw(artist, renderer, *args, **kwargs)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/axes/_base.py(2628)draw()
-> mimage._draw_list_compositing_images(renderer, self, artists)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/image.py(138)_draw_list_compositing_images()
-> a.draw(renderer)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/artist.py(50)draw_wrapper()
-> return draw(artist, renderer, *args, **kwargs)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/legend.py(646)draw()
-> self.legendPatch.draw(renderer)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/artist.py(50)draw_wrapper()
-> return draw(artist, renderer, *args, **kwargs)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/patches.py(535)draw()
-> renderer.draw_path(gc, tpath, affine, rgbFace)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/backends/backend_cairo.py(239)draw_path()
-> _append_path(ctx, path, transform, clip)
/sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/backends/backend_cairo.py(163)_append_path()
-> return _append_paths(ctx, [path], [transform], clip)
> /sfs/fs5/home-sh/sunip229/opt/miniconda3/envs/py37_forge_jore/lib/python3.7/site-packages/matplotlib/backends/backend_cairo.py(104)_append_paths_slow()
-> *np.concatenate([cur / 3 + points[:2] * 2 / 3,
(Pdb) points[:2]
array([404.72 , 67.472])
(Pdb) cur
(400.71875, 67.47265625)
It seams like the value of cur should be an array and not a tuple.
The versions of the related programs are:
cairo 1.14.12 h276e583_5 conda-forge
matplotlib 3.0.2 h8a2030e_0 conda-forge
matplotlib-base 3.0.2 py37h20b835b_0 conda-forge
pycairo 1.18.0 py37h4d1f301_0 conda-forge
python 3.7.0 h5001a0f_4 conda-forge
The bug occurred at several plots. However, the creation of the plots is rather complex. Thus I have no minimal example that reproduces the bug for now. If this is necessary, however, I can try to construct one.