From 0d8449f9a1bf5fc3738e7945caeaebe5cf2faca2 Mon Sep 17 00:00:00 2001 From: Matthew Feickert Date: Sun, 18 May 2025 00:46:52 -0600 Subject: [PATCH 1/3] ENH: Add Petroff 6 and 8 color cycle style sheets * Add the 6 color and the 8 color Petroff color cycles from Matthew A. Petroff, Accessible Color Sequences for Data Visualization https://arxiv.org/abs/2107.02270. The 10 color cycle was added in PR 27851 which landed in Matplotlib v3.10.0. --- lib/matplotlib/_cm.py | 23 +++++++++++++++++++ lib/matplotlib/colors.py | 2 ++ .../mpl-data/stylelib/petroff6.mplstyle | 5 ++++ .../mpl-data/stylelib/petroff8.mplstyle | 5 ++++ 4 files changed, 35 insertions(+) create mode 100644 lib/matplotlib/mpl-data/stylelib/petroff6.mplstyle create mode 100644 lib/matplotlib/mpl-data/stylelib/petroff8.mplstyle diff --git a/lib/matplotlib/_cm.py b/lib/matplotlib/_cm.py index b942d1697934..d3f4632108a8 100644 --- a/lib/matplotlib/_cm.py +++ b/lib/matplotlib/_cm.py @@ -1365,6 +1365,29 @@ def _gist_yarg(x): return 1 - x (0.8509803921568627, 0.8509803921568627, 0.8509803921568627 ), # d9d9d9 ) +# Colorblind accessible palettes from +# Matthew A. Petroff, Accessible Color Sequences for Data Visualization +# https://arxiv.org/abs/2107.02270 + +_petroff6_data = ( + (0.3411764705882353, 0.5647058823529412, 0.9882352941176471), # 5790fc + (0.9725490196078431, 0.611764705882353, 0.12549019607843137), # f89c20 + (0.8941176470588236, 0.1450980392156863, 0.21176470588235294), # e42536 + (0.5882352941176471, 0.2901960784313726, 0.5450980392156862), # 964a8b + (0.611764705882353, 0.611764705882353, 0.6313725490196078), # 9c9ca1 + (0.47843137254901963, 0.12941176470588237, 0.8666666666666667), # 7a21dd +) + +_petroff8_data = ( + (0.09411764705882353, 0.27058823529411763, 0.984313725490196), # 1845fb + (1.0, 0.3686274509803922, 0.00784313725490196), # ff5e02 + (0.788235294117647, 0.12156862745098039, 0.08627450980392157), # c91f16 + (0.7843137254901961, 0.28627450980392155, 0.6627450980392157), # c849a9 + (0.6784313725490196, 0.6784313725490196, 0.49019607843137253), # adad7d + (0.5254901960784314, 0.7843137254901961, 0.8666666666666667), # 86c8dd + (0.3411764705882353, 0.5529411764705883, 1.0), # 578dff + (0.396078431372549, 0.38823529411764707, 0.39215686274509803), # 656364 +) _petroff10_data = ( (0.24705882352941178, 0.5647058823529412, 0.8549019607843137), # 3f90da diff --git a/lib/matplotlib/colors.py b/lib/matplotlib/colors.py index 9bd808074c1f..d6636e0e8669 100644 --- a/lib/matplotlib/colors.py +++ b/lib/matplotlib/colors.py @@ -131,6 +131,8 @@ class ColorSequenceRegistry(Mapping): 'Set1': _cm._Set1_data, 'Set2': _cm._Set2_data, 'Set3': _cm._Set3_data, + 'petroff6': _cm._petroff6_data, + 'petroff8': _cm._petroff8_data, 'petroff10': _cm._petroff10_data, } diff --git a/lib/matplotlib/mpl-data/stylelib/petroff6.mplstyle b/lib/matplotlib/mpl-data/stylelib/petroff6.mplstyle new file mode 100644 index 000000000000..ff227eba45ba --- /dev/null +++ b/lib/matplotlib/mpl-data/stylelib/petroff6.mplstyle @@ -0,0 +1,5 @@ +# Color cycle survey palette from Petroff (2021): +# https://arxiv.org/abs/2107.02270 +# https://github.com/mpetroff/accessible-color-cycles +axes.prop_cycle: cycler('color', ['5790fc', 'f89c20', 'e42536', '964a8b', '9c9ca1', '7a21dd']) +patch.facecolor: 5790fc diff --git a/lib/matplotlib/mpl-data/stylelib/petroff8.mplstyle b/lib/matplotlib/mpl-data/stylelib/petroff8.mplstyle new file mode 100644 index 000000000000..0228f736ddea --- /dev/null +++ b/lib/matplotlib/mpl-data/stylelib/petroff8.mplstyle @@ -0,0 +1,5 @@ +# Color cycle survey palette from Petroff (2021): +# https://arxiv.org/abs/2107.02270 +# https://github.com/mpetroff/accessible-color-cycles +axes.prop_cycle: cycler('color', ['1845fb', 'ff5e02', 'c91f16', 'c849a9', 'adad7d', '86c8dd', '578dff', '656364']) +patch.facecolor: 1845fb From 324e7f9cade5abbc873d798c6114f4275592f506 Mon Sep 17 00:00:00 2001 From: Matthew Feickert Date: Sun, 18 May 2025 01:09:29 -0600 Subject: [PATCH 2/3] TST: Add 6 and 8 color Petroff color sequences to tests * Verify they appear in plt.color_sequences. --- lib/matplotlib/tests/test_colors.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/matplotlib/tests/test_colors.py b/lib/matplotlib/tests/test_colors.py index 8d0f3467f045..df3f65bdb2dc 100644 --- a/lib/matplotlib/tests/test_colors.py +++ b/lib/matplotlib/tests/test_colors.py @@ -1704,7 +1704,8 @@ def test_color_sequences(): assert plt.color_sequences is matplotlib.color_sequences # same registry assert list(plt.color_sequences) == [ 'tab10', 'tab20', 'tab20b', 'tab20c', 'Pastel1', 'Pastel2', 'Paired', - 'Accent', 'Dark2', 'Set1', 'Set2', 'Set3', 'petroff10'] + 'Accent', 'Dark2', 'Set1', 'Set2', 'Set3', 'petroff6', 'petroff8', + 'petroff10'] assert len(plt.color_sequences['tab10']) == 10 assert len(plt.color_sequences['tab20']) == 20 From b89e4ced8cbbe9df7556c05c1d5014f86a2f299c Mon Sep 17 00:00:00 2001 From: Matthew Feickert Date: Sun, 18 May 2025 01:21:11 -0600 Subject: [PATCH 3/3] DOC: Add 'What's New' entry for 6 and 8 Petorff color cycles * Note the addition of 'petroff6' and 'petroff8' and give an example of how to load them. --- ...x_and_eight_color_petroff_color_cycles.rst | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 doc/users/next_whats_new/six_and_eight_color_petroff_color_cycles.rst diff --git a/doc/users/next_whats_new/six_and_eight_color_petroff_color_cycles.rst b/doc/users/next_whats_new/six_and_eight_color_petroff_color_cycles.rst new file mode 100644 index 000000000000..3b17b4f68868 --- /dev/null +++ b/doc/users/next_whats_new/six_and_eight_color_petroff_color_cycles.rst @@ -0,0 +1,21 @@ +Six and eight color Petroff color cycles +---------------------------------------- + +The six and eight color accessible Petroff color cycles are named 'petroff6' and +'petroff8'. +They compliment the existing 'petroff10' color cycle, added in `Matplotlib 3.10.0`_ + +For more details see +`Petroff, M. A.: "Accessible Color Sequences for Data Visualization" +`_. +To load the 'petroff6' color cycle in place of the default:: + + import matplotlib.pyplot as plt + plt.style.use('petroff6') + +or to load the 'petroff8' color cycle:: + + import matplotlib.pyplot as plt + plt.style.use('petroff8') + +.. _Matplotlib 3.10.0: https://matplotlib.org/stable/users/prev_whats_new/whats_new_3.10.0.html#new-more-accessible-color-cycle pFad - Phonifier reborn

Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.

Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.


Alternative Proxies:

Alternative Proxy

pFad Proxy

pFad v3 Proxy

pFad v4 Proxy