如何在Matplotlib中按彩虹设置Boxplot颜色 [英] How can I set boxplot color by rainbow in matplotlib

问题描述

我想在比较中创建数据箱形图，我的图看起来像是

如何添加颜色

解决方案

您可以为

I want to create boxplot of data in comparing, my plot looks like

how can I add color like

解决方案

You can color the box following this example. Beyond that, you will need to map your data in mind to color on the "rainbow" colormap with this module. Here is an example with random test data. I map colors with means in this example.

import matplotlib.pyplot as plt
import matplotlib.cm as cm
import numpy as np

# Random test data
test_data = [np.random.normal(mean, 1, 100) for mean in range(50)]

fig, axes = plt.subplots(figsize=(12, 16))

# Horizontal box plot
bplot = axes.boxplot(test_data,
                     vert=False,   # vertical box aligmnent
                     patch_artist=True)   # fill with color

# Fill with colors
cmap = cm.ScalarMappable(cmap='rainbow')
test_mean = [np.mean(x) for x in test_data]
for patch, color in zip(bplot['boxes'], cmap.to_rgba(test_mean)):
    patch.set_facecolor(color)

plt.show()

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