包含标签 matplotlib articles

matplotlib汇制时间索引的k线图

使用matplotlib 可以汇制行情图(为方便取数据,这里行情源还是用的tushare),不过在汇图的时候想要使用时间作为x列,格式“2017-01-01”这种格式,发现只有bar类型的图可以正常在下面显示出时间序列,其他像折线图,k线图等都不能正常显示时间序列。后来研究发现在使……

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python matplotlib画饼图

画饼画使用的方法是plt.pie方法,里面有几个参数可以设置,具体后面再提,先看下代码和效果。这里以常见的几个课目的值为例,算下各个科目在饼图中占的比重。 1import matplotlib.pyplot as plt 2x = [4, 9, 21, 55, 30, 18] 3labels = ['math', 'history', 'chemistry', 'physics', 'biology','Enrlish'] 4explode = [0, 0.01, 0.01, 0.02, 0.03, 0] 5plt.pie(x, labels=labels, explode=explode,shadow=True,autopct='%1.1f%%',startangle=60,radius=1) 6plt.show() 7plt.close() 上面的代码在 jupyter notebooks 中是直接画不出图的,会提示 ,原因是需要在启动时……

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