如何使用Matplotlib在直方图中按组填充颜色? [英] How to fill color by groups in histogram using Matplotlib?

问题描述

我知道如何在R中执行此操作，并在下面提供了代码.我想知道如何做与Python Matplotlib中下面提到的类似的事情或使用任何其他库

I know how to do this in R and have provided a code for it below. I want to know how can I do something similar to the below mentioned in Python Matplotlib or using any other library

library(ggplot2)
ggplot(dia[1:768,], aes(x = Glucose, fill = Outcome)) +
  geom_bar() +
  ggtitle("Glucose") +
  xlab("Glucose") +
  ylab("Total Count") +
  labs(fill = "Outcome")

推荐答案

使用熊猫，您可以旋转数据框并直接绘制它.

Using pandas you can pivot the dataframe and directly plot it.

import pandas as pd
import numpy as np
import matplotlib.pyplot as plt

# dataframe with two columns in "long form"
g = np.array([np.random.normal(5, 10, 500),
              np.random.rayleigh(10, size=500)]).flatten()
df = pd.DataFrame({'Glucose': g, 'Outcome': np.repeat([0,1],500)})

# pivot and plot
df.pivot(columns="Outcome", values="Glucose").plot.hist(bins=100)

plt.show()

这篇关于如何使用Matplotlib在直方图中按组填充颜色?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！