如何在直方图中绘制字典中的键和值 [英] How to plot keys and values from dictionary in histogram

问题描述

我需要用以下字典绘制直方图

I need to plot a histogram with the following dictionary

x = {5:289, 8:341, 1:1565, 4:655, 2:1337, 9:226, 7:399, 3:967, 6:405}

我首先需要将键从1到9排序.然后将这些值绘制在直方图中，最大概率为1.0.我已经尝试了以下方法(以及其他方法).

I need first keys be ordered from 1 to 9. Then the values will be plotted in the histogram, showing a maximum probability of 1.0. I have tried the following (plus other stuff).

import matplotlib.pyplot as plt
import numpy as np

plt.hist(x.keys(), x.values(), color='g', label = "Real distribution")
plt.show()

或

plt.hist (x, bins = np.arange(9), color = 'g', label = "Real distribution")
plt.show()

或

fsn_count_ = sorted(fsn_count)

plt.hist (fsn_count_, bins = np.arange(9), color = 'b', label = "Real distribution")
plt.plot ([0] + bf, color = 'g', label = "Benford Model")
plt.xlabel ('Significant number')
plt.ylabel ('Percentage')
plt.xlim (1,9)
plt.ylim (0,1)
plt.legend (bbox_to_anchor = (1, 1), loc="upper right", borderaxespad=0.)
plt.savefig (country_ + '.png')
plt.show ()
plt.clf ()

distribution_sum = sum(bf)
print('The sum of percentage distribution is:', distribution_sum)

推荐答案

从您的评论看来，条形图似乎是显示数据的更好方法.

From your comment, it seems that a bar chart would be a better way to display the data.

可以通过将字典的值除以值的总和来找到概率:

The probability can be found by dividing the values of the dictionary by the sum of the values:

import matplotlib.pyplot as plt
import numpy as np

x = {5:289, 8:341, 1:1565, 4:655, 2:1337, 9:226, 7:399, 3:967, 6:405}

keys = x.keys()
vals = x.values()

plt.bar(keys, np.divide(list(vals), sum(vals)), label="Real distribution")

plt.ylim(0,1)
plt.ylabel ('Percentage')
plt.xlabel ('Significant number')
plt.xticks(list(keys))
plt.legend (bbox_to_anchor=(1, 1), loc="upper right", borderaxespad=0.)

plt.show()

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