从字典绘制直方图 [英] Plot a histogram from a Dictionary
本文介绍了从字典绘制直方图的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我创建了一个字典
,它计算每个键的列表
中的事件,现在我要绘制其内容的直方图。
这是我要绘制的字典的内容:
{1:27,34:1,3:72,4:62,5:33,6:36,7:20,8:12,9:9,10:6,11: 5,12:8,2:74,14:4,15:3,16:1,7,17,18,19,19,21:1,27:2}
到目前为止,我写了:
import numpy as np
import matplotlib.pyplot as plt
pos = np.arange(len(myDictionary.keys()))
width = 1.0#给出直方图方面条形图
ax = plt.axes()
ax.set_xticks(pos +(width / 2))
ax.set_xticklabels(myDictionary.keys())
plt.bar(myDictionary.keys(),******,width,color ='g')
#^^^^^^我应该放在这里?
plt.show()
我只是简单地做了
plt.bar(myDictionary.keys(),myDictionary,width,color ='g')
pre>
但这是结果:
我不知道为什么3个酒吧被移动,我也想直方图以有序的方式显示。
有人可以告诉我如何做吗?
解决方案您可以使用该函数绘制直方图,如下所示:
a = np.random。 random_integers(0,10,20)#example值列表
plt.hist(a)
plt.show()
或者您可以使用
myDictionary
,如下所示:plt.bar(myDictionary.keys(),myDictionary.values(),width,color ='g')
I created a
dictionary
that counts the occurrences in alist
of every key and I would now like to plot the histogram of its content.This is the content of the dictionary I want to plot:
{1: 27, 34: 1, 3: 72, 4: 62, 5: 33, 6: 36, 7: 20, 8: 12, 9: 9, 10: 6, 11: 5, 12: 8, 2: 74, 14: 4, 15: 3, 16: 1, 17: 1, 18: 1, 19: 1, 21: 1, 27: 2}
So far I wrote this:
import numpy as np import matplotlib.pyplot as plt pos = np.arange(len(myDictionary.keys())) width = 1.0 # gives histogram aspect to the bar diagram ax = plt.axes() ax.set_xticks(pos + (width / 2)) ax.set_xticklabels(myDictionary.keys()) plt.bar(myDictionary.keys(), ******, width, color='g') # ^^^^^^ what should I put here? plt.show()
I tried by simply doing
plt.bar(myDictionary.keys(), myDictionary, width, color='g')
but this is the result:
and I don't know why the 3 bars are shifted and also I'd like the histogram to be displayed in a ordered fashion.
Can somebody tell me how to do it?
解决方案You can use the function for plotting histograms like this:
a = np.random.random_integers(0,10,20) #example list of values plt.hist(a) plt.show()
Or you can use
myDictionary
just like this:plt.bar(myDictionary.keys(), myDictionary.values(), width, color='g')
这篇关于从字典绘制直方图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!
查看全文