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Too many logs about glyphs when saving PDFs after changing fonts in matplotlib #3371

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earmingol opened this issue Dec 6, 2023 · 4 comments
Open

Too many logs about glyphs when saving PDFs after changing fonts in matplotlib #3371

earmingol opened this issue Dec 6, 2023 · 4 comments

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@earmingol
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earmingol commented Dec 6, 2023 •
edited

Hi!

I am getting the a bunch of log messages (shown at the end of this post) when changing fonts in matplotlib (v3.8.2) using

plt.rcParams.update({"pdf.fonttype": 42, "ps.fonttype": 42})

These messages are displayed when I am saving a plot as a pdf.

I am using the latest version of fonttools (v4.46) and python 3.11. I tried downgrading the version of fontools to v4.38 and/or downgrading matplotlib to different versions, but I still get the same issue.

I realized that I stop getting these messages when I reset the matplotlib params using:

from matplotlib import rcParams, rcParamsDefault
rcParams.update(rcParamsDefault)

I would use the default fonts, but I need to use another library that uses this font internally to save plots as PDFs (see: https://github.com/zqfang/GSEApy/blob/4d2540f22cfadc36607540a59b504a4c94dbe826/gseapy/plot.py#L274).

Any idea how to avoid getting these messages?

The message I get is:

cmap pruned
kern dropped
post pruned
FFTM dropped
GPOS pruned
GSUB pruned
glyf pruned
Added gid0 to subset
Added first four glyphs to subset
Closing glyph list over 'GSUB': 33 glyphs before
Glyph names: ['.notdef', '.null', 'A', 'C', 'D', 'E', 'G', 'I', 'K', 'L', 'M', 'N', 'O', 'R', 'S', 'T', 'U', 'X', 'Y', 'a', 'c', 'd', 'e', 'h', 'i', 'k', 'm', 'n', 'nonmarkingreturn', 'o', 'r', 'space', 't']
Glyph IDs:   [0, 1, 2, 3, 36, 38, 39, 40, 42, 44, 46, 47, 48, 49, 50, 53, 54, 55, 56, 59, 60, 68, 70, 71, 72, 75, 76, 78, 80, 81, 82, 85, 87]
Closed glyph list over 'GSUB': 33 glyphs after
Glyph names: ['.notdef', '.null', 'A', 'C', 'D', 'E', 'G', 'I', 'K', 'L', 'M', 'N', 'O', 'R', 'S', 'T', 'U', 'X', 'Y', 'a', 'c', 'd', 'e', 'h', 'i', 'k', 'm', 'n', 'nonmarkingreturn', 'o', 'r', 'space', 't']
Glyph IDs:   [0, 1, 2, 3, 36, 38, 39, 40, 42, 44, 46, 47, 48, 49, 50, 53, 54, 55, 56, 59, 60, 68, 70, 71, 72, 75, 76, 78, 80, 81, 82, 85, 87]
Closing glyph list over 'glyf': 33 glyphs before
Glyph names: ['.notdef', '.null', 'A', 'C', 'D', 'E', 'G', 'I', 'K', 'L', 'M', 'N', 'O', 'R', 'S', 'T', 'U', 'X', 'Y', 'a', 'c', 'd', 'e', 'h', 'i', 'k', 'm', 'n', 'nonmarkingreturn', 'o', 'r', 'space', 't']
Glyph IDs:   [0, 1, 2, 3, 36, 38, 39, 40, 42, 44, 46, 47, 48, 49, 50, 53, 54, 55, 56, 59, 60, 68, 70, 71, 72, 75, 76, 78, 80, 81, 82, 85, 87]
Closed glyph list over 'glyf': 33 glyphs after
Glyph names: ['.notdef', '.null', 'A', 'C', 'D', 'E', 'G', 'I', 'K', 'L', 'M', 'N', 'O', 'R', 'S', 'T', 'U', 'X', 'Y', 'a', 'c', 'd', 'e', 'h', 'i', 'k', 'm', 'n', 'nonmarkingreturn', 'o', 'r', 'space', 't']
Glyph IDs:   [0, 1, 2, 3, 36, 38, 39, 40, 42, 44, 46, 47, 48, 49, 50, 53, 54, 55, 56, 59, 60, 68, 70, 71, 72, 75, 76, 78, 80, 81, 82, 85, 87]
Retaining 33 glyphs
head subsetting not needed
hhea subsetting not needed
maxp subsetting not needed
OS/2 subsetting not needed
hmtx subsetted
cmap subsetted
fpgm subsetting not needed
prep subsetting not needed
cvt  subsetting not needed
loca subsetting not needed
post subsetted
gasp subsetting not needed
GDEF subsetted
GPOS subsetted
GSUB subsetted
name subsetting not needed
glyf subsetted
head pruned
OS/2 Unicode ranges pruned: [0]
OS/2 CodePage ranges pruned: [0]
glyf pruned
GDEF pruned
GPOS pruned
GSUB pruned
name pruned
maxp pruned
cmap pruned
kern dropped
post pruned
FFTM dropped
GPOS pruned
GSUB pruned
glyf pruned
Added gid0 to subset
Added first four glyphs to subset
Closing glyph list over 'GSUB': 34 glyphs before
Glyph names: ['.notdef', '.null', 'D', 'E', 'F', 'N', 'P', 'R', 'S', 'Z', 'a', 'c', 'colon', 'e', 'eight', 'five', 'four', 'g', 'hyphen', 'l', 'nonmarkingreturn', 'o', 'one', 'period', 'plus', 'r', 's', 'six', 'space', 't', 'three', 'two', 'v', 'zero']
Glyph IDs:   [0, 1, 2, 3, 14, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 29, 39, 40, 41, 49, 51, 53, 54, 61, 68, 70, 72, 74, 79, 82, 85, 86, 87, 89]
Closed glyph list over 'GSUB': 34 glyphs after
Glyph names: ['.notdef', '.null', 'D', 'E', 'F', 'N', 'P', 'R', 'S', 'Z', 'a', 'c', 'colon', 'e', 'eight', 'five', 'four', 'g', 'hyphen', 'l', 'nonmarkingreturn', 'o', 'one', 'period', 'plus', 'r', 's', 'six', 'space', 't', 'three', 'two', 'v', 'zero']
Glyph IDs:   [0, 1, 2, 3, 14, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 29, 39, 40, 41, 49, 51, 53, 54, 61, 68, 70, 72, 74, 79, 82, 85, 86, 87, 89]
Closing glyph list over 'MATH': 34 glyphs before
Glyph names: ['.notdef', '.null', 'D', 'E', 'F', 'N', 'P', 'R', 'S', 'Z', 'a', 'c', 'colon', 'e', 'eight', 'five', 'four', 'g', 'hyphen', 'l', 'nonmarkingreturn', 'o', 'one', 'period', 'plus', 'r', 's', 'six', 'space', 't', 'three', 'two', 'v', 'zero']
Glyph IDs:   [0, 1, 2, 3, 14, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 29, 39, 40, 41, 49, 51, 53, 54, 61, 68, 70, 72, 74, 79, 82, 85, 86, 87, 89]
Closed glyph list over 'MATH': 34 glyphs after
Glyph names: ['.notdef', '.null', 'D', 'E', 'F', 'N', 'P', 'R', 'S', 'Z', 'a', 'c', 'colon', 'e', 'eight', 'five', 'four', 'g', 'hyphen', 'l', 'nonmarkingreturn', 'o', 'one', 'period', 'plus', 'r', 's', 'six', 'space', 't', 'three', 'two', 'v', 'zero']
Glyph IDs:   [0, 1, 2, 3, 14, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 29, 39, 40, 41, 49, 51, 53, 54, 61, 68, 70, 72, 74, 79, 82, 85, 86, 87, 89]
Closing glyph list over 'glyf': 34 glyphs before
Glyph names: ['.notdef', '.null', 'D', 'E', 'F', 'N', 'P', 'R', 'S', 'Z', 'a', 'c', 'colon', 'e', 'eight', 'five', 'four', 'g', 'hyphen', 'l', 'nonmarkingreturn', 'o', 'one', 'period', 'plus', 'r', 's', 'six', 'space', 't', 'three', 'two', 'v', 'zero']
Glyph IDs:   [0, 1, 2, 3, 14, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 29, 39, 40, 41, 49, 51, 53, 54, 61, 68, 70, 72, 74, 79, 82, 85, 86, 87, 89]
Closed glyph list over 'glyf': 34 glyphs after
Glyph names: ['.notdef', '.null', 'D', 'E', 'F', 'N', 'P', 'R', 'S', 'Z', 'a', 'c', 'colon', 'e', 'eight', 'five', 'four', 'g', 'hyphen', 'l', 'nonmarkingreturn', 'o', 'one', 'period', 'plus', 'r', 's', 'six', 'space', 't', 'three', 'two', 'v', 'zero']
Glyph IDs:   [0, 1, 2, 3, 14, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 29, 39, 40, 41, 49, 51, 53, 54, 61, 68, 70, 72, 74, 79, 82, 85, 86, 87, 89]
Retaining 34 glyphs
head subsetting not needed
hhea subsetting not needed
maxp subsetting not needed
OS/2 subsetting not needed
hmtx subsetted
cmap subsetted
fpgm subsetting not needed
prep subsetting not needed
cvt  subsetting not needed
loca subsetting not needed
post subsetted
gasp subsetting not needed
MATH subsetted
GDEF subsetted
GPOS subsetted
GSUB subsetted
name subsetting not needed
glyf subsetted
head pruned
OS/2 Unicode ranges pruned: [0]
OS/2 CodePage ranges pruned: [0]
glyf pruned
GDEF pruned
GPOS pruned
GSUB pruned
name pruned
maxp pruned
cmap pruned
kern dropped
post pruned
FFTM dropped
GPOS pruned
GSUB pruned
glyf pruned
Added gid0 to subset
Added first four glyphs to subset
Closing glyph list over 'GSUB': 28 glyphs before
Glyph names: ['.notdef', '.null', 'A', 'C', 'D', 'E', 'G', 'I', 'N', 'O', 'P', 'R', 'S', 'T', 'a', 'c', 'd', 'e', 'h', 'i', 'k', 'm', 'n', 'nonmarkingreturn', 'o', 'r', 'space', 't']
Glyph IDs:   [0, 1, 2, 3, 36, 38, 39, 40, 42, 44, 49, 50, 51, 53, 54, 55, 68, 70, 71, 72, 75, 76, 78, 80, 81, 82, 85, 87]
Closed glyph list over 'GSUB': 28 glyphs after
Glyph names: ['.notdef', '.null', 'A', 'C', 'D', 'E', 'G', 'I', 'N', 'O', 'P', 'R', 'S', 'T', 'a', 'c', 'd', 'e', 'h', 'i', 'k', 'm', 'n', 'nonmarkingreturn', 'o', 'r', 'space', 't']
Glyph IDs:   [0, 1, 2, 3, 36, 38, 39, 40, 42, 44, 49, 50, 51, 53, 54, 55, 68, 70, 71, 72, 75, 76, 78, 80, 81, 82, 85, 87]
Closing glyph list over 'glyf': 28 glyphs before
Glyph names: ['.notdef', '.null', 'A', 'C', 'D', 'E', 'G', 'I', 'N', 'O', 'P', 'R', 'S', 'T', 'a', 'c', 'd', 'e', 'h', 'i', 'k', 'm', 'n', 'nonmarkingreturn', 'o', 'r', 'space', 't']
Glyph IDs:   [0, 1, 2, 3, 36, 38, 39, 40, 42, 44, 49, 50, 51, 53, 54, 55, 68, 70, 71, 72, 75, 76, 78, 80, 81, 82, 85, 87]
Closed glyph list over 'glyf': 28 glyphs after
Glyph names: ['.notdef', '.null', 'A', 'C', 'D', 'E', 'G', 'I', 'N', 'O', 'P', 'R', 'S', 'T', 'a', 'c', 'd', 'e', 'h', 'i', 'k', 'm', 'n', 'nonmarkingreturn', 'o', 'r', 'space', 't']
Glyph IDs:   [0, 1, 2, 3, 36, 38, 39, 40, 42, 44, 49, 50, 51, 53, 54, 55, 68, 70, 71, 72, 75, 76, 78, 80, 81, 82, 85, 87]
Retaining 28 glyphs
head subsetting not needed
hhea subsetting not needed
maxp subsetting not needed
OS/2 subsetting not needed
hmtx subsetted
cmap subsetted
fpgm subsetting not needed
prep subsetting not needed
cvt  subsetting not needed
loca subsetting not needed
post subsetted
gasp subsetting not needed
GDEF subsetted
GPOS subsetted
GSUB subsetted
name subsetting not needed
glyf subsetted
head pruned
OS/2 Unicode ranges pruned: [0]
OS/2 CodePage ranges pruned: [0]
glyf pruned
GDEF pruned
GPOS pruned
GSUB pruned
name pruned
maxp pruned
cmap pruned
kern dropped
post pruned
FFTM dropped
GPOS pruned
GSUB pruned
glyf pruned
Added gid0 to subset
Added first four glyphs to subset
Closing glyph list over 'GSUB': 35 glyphs before
Glyph names: ['.notdef', '.null', 'D', 'E', 'F', 'N', 'P', 'R', 'S', 'Z', 'a', 'c', 'colon', 'e', 'eight', 'five', 'four', 'g', 'hyphen', 'l', 'nine', 'nonmarkingreturn', 'o', 'one', 'period', 'plus', 'r', 's', 'six', 'space', 't', 'three', 'two', 'v', 'zero']
Glyph IDs:   [0, 1, 2, 3, 14, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 39, 40, 41, 49, 51, 53, 54, 61, 68, 70, 72, 74, 79, 82, 85, 86, 87, 89]
Closed glyph list over 'GSUB': 35 glyphs after
Glyph names: ['.notdef', '.null', 'D', 'E', 'F', 'N', 'P', 'R', 'S', 'Z', 'a', 'c', 'colon', 'e', 'eight', 'five', 'four', 'g', 'hyphen', 'l', 'nine', 'nonmarkingreturn', 'o', 'one', 'period', 'plus', 'r', 's', 'six', 'space', 't', 'three', 'two', 'v', 'zero']
Glyph IDs:   [0, 1, 2, 3, 14, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 39, 40, 41, 49, 51, 53, 54, 61, 68, 70, 72, 74, 79, 82, 85, 86, 87, 89]
Closing glyph list over 'MATH': 35 glyphs before
Glyph names: ['.notdef', '.null', 'D', 'E', 'F', 'N', 'P', 'R', 'S', 'Z', 'a', 'c', 'colon', 'e', 'eight', 'five', 'four', 'g', 'hyphen', 'l', 'nine', 'nonmarkingreturn', 'o', 'one', 'period', 'plus', 'r', 's', 'six', 'space', 't', 'three', 'two', 'v', 'zero']
Glyph IDs:   [0, 1, 2, 3, 14, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 39, 40, 41, 49, 51, 53, 54, 61, 68, 70, 72, 74, 79, 82, 85, 86, 87, 89]
Closed glyph list over 'MATH': 35 glyphs after
Glyph names: ['.notdef', '.null', 'D', 'E', 'F', 'N', 'P', 'R', 'S', 'Z', 'a', 'c', 'colon', 'e', 'eight', 'five', 'four', 'g', 'hyphen', 'l', 'nine', 'nonmarkingreturn', 'o', 'one', 'period', 'plus', 'r', 's', 'six', 'space', 't', 'three', 'two', 'v', 'zero']
Glyph IDs:   [0, 1, 2, 3, 14, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 39, 40, 41, 49, 51, 53, 54, 61, 68, 70, 72, 74, 79, 82, 85, 86, 87, 89]
Closing glyph list over 'glyf': 35 glyphs before
Glyph names: ['.notdef', '.null', 'D', 'E', 'F', 'N', 'P', 'R', 'S', 'Z', 'a', 'c', 'colon', 'e', 'eight', 'five', 'four', 'g', 'hyphen', 'l', 'nine', 'nonmarkingreturn', 'o', 'one', 'period', 'plus', 'r', 's', 'six', 'space', 't', 'three', 'two', 'v', 'zero']
Glyph IDs:   [0, 1, 2, 3, 14, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 39, 40, 41, 49, 51, 53, 54, 61, 68, 70, 72, 74, 79, 82, 85, 86, 87, 89]
Closed glyph list over 'glyf': 35 glyphs after
Glyph names: ['.notdef', '.null', 'D', 'E', 'F', 'N', 'P', 'R', 'S', 'Z', 'a', 'c', 'colon', 'e', 'eight', 'five', 'four', 'g', 'hyphen', 'l', 'nine', 'nonmarkingreturn', 'o', 'one', 'period', 'plus', 'r', 's', 'six', 'space', 't', 'three', 'two', 'v', 'zero']
Glyph IDs:   [0, 1, 2, 3, 14, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 39, 40, 41, 49, 51, 53, 54, 61, 68, 70, 72, 74, 79, 82, 85, 86, 87, 89]
Retaining 35 glyphs
head subsetting not needed
hhea subsetting not needed
maxp subsetting not needed
OS/2 subsetting not needed
hmtx subsetted
cmap subsetted
fpgm subsetting not needed
prep subsetting not needed
cvt  subsetting not needed
loca subsetting not needed
post subsetted
gasp subsetting not needed
MATH subsetted
GDEF subsetted
GPOS subsetted
GSUB subsetted
name subsetting not needed
glyf subsetted
head pruned
OS/2 Unicode ranges pruned: [0]
OS/2 CodePage ranges pruned: [0]
glyf pruned
GDEF pruned
GPOS pruned
GSUB pruned
name pruned
@earmingol earmingol changed the title Message flooding of glyphs when saving PDFs after changing font in matplotlib Message flooding about glyphs when saving PDFs after changing font in matplotlib Dec 6, 2023
@earmingol earmingol changed the title Message flooding about glyphs when saving PDFs after changing font in matplotlib Message flooding about glyphs when saving PDFs after changing fonts in matplotlib Dec 6, 2023
@earmingol earmingol mentioned this issue Dec 6, 2023
Closed
@earmingol earmingol changed the title Message flooding about glyphs when saving PDFs after changing fonts in matplotlib Too many logs about glyphs when saving PDFs after changing fonts in matplotlib Dec 13, 2023
@lldelisle
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This worked for me:

import logging
logging.getLogger("fontTools").setLevel(logging.WARNING)

@behdad
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behdad commented May 1, 2024

I didn't know matplotlib uses fonttools to subset fonts for embedding in PDF. That's really cool!

@behdad
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behdad commented May 1, 2024

import logging
logging.getLogger("fontTools").setLevel(logging.WARNING)

Then maybe report it to matplotlib to do that?

@lldelisle
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I put it there: matplotlib/matplotlib#24546

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3 participants
@behdad @earmingol @lldelisle