用 Python 绘制直方图

发布于 2024-11-06 01:59:06 字数 221 浏览 2 评论 0原文

我有两个列表，x 和 y。
x 包含字母表 AZ，Y 包含它们在文件中的频率。

我尝试研究如何在直方图中绘制这些值，但在理解如何绘制它方面没有成功。

n, bins, patches = plt.hist(x, 26, normed=1, facecolor='blue', alpha=0.75)

x 会是上述列表中的列表 x 吗？

原文

I have two lists, x and y.
x contains the alphabet A-Z and Y contains the frequency of them in a file.

I've tried researching how to plot these values in a histogram but has had no success with understanding how to plot it.

n, bins, patches = plt.hist(x, 26, normed=1, facecolor='blue', alpha=0.75)

Would x be list x in the lists mentioned above?

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揽月 2024-11-13 01:59:06

hist 适用于值的集合并计算并从中绘制直方图。
在您的情况下，您已经预先计算了每组（字母）的频率。要以直方图形式表示数据，请使用更好的 matplotlib bar：

import numpy as np
import matplotlib.pyplot as plt

alphab = ['A', 'B', 'C', 'D', 'E', 'F']
frequencies = [23, 44, 12, 11, 2, 10]

pos = np.arange(len(alphab))
width = 1.0     # gives histogram aspect to the bar diagram

ax = plt.axes()
ax.set_xticks(pos + (width / 2))
ax.set_xticklabels(alphab)

plt.bar(pos, frequencies, width, color='r')
plt.show()

在此处输入图像描述

hist works on a collection of values and computes and draws the histogram from them.
In your case you already precalculated the frequency of each group (letter). To represent your data in an histogram form use better matplotlib bar:

import numpy as np
import matplotlib.pyplot as plt

alphab = ['A', 'B', 'C', 'D', 'E', 'F']
frequencies = [23, 44, 12, 11, 2, 10]

pos = np.arange(len(alphab))
width = 1.0     # gives histogram aspect to the bar diagram

ax = plt.axes()
ax.set_xticks(pos + (width / 2))
ax.set_xticklabels(alphab)

plt.bar(pos, frequencies, width, color='r')
plt.show()

enter image description here

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