python: plt.errorbar

文章内容：如何用python画带误差棒的数据点

import matplotlib.pyplot as plt
import numpy as np
xs = [i+1 for i in range(6)]
ys = [2*i+1 for i in range(6)]
yerrs = [np.sqrt(x) for x in ys]
plt.errorbar(xs,ys,yerr=yerrs,ecolor='red',elinewidth=3,capsize=9,capthick=3,fmt='s',ms=10,mfc='black',mec='green')
plt.show()