我需要绘制一个带有不对称误差条的条形图...
matplotlib.pyplot.bar函数的文档说:
细节:xerr和yerr直接传递给errorbar(),因此它们也可以具有形状2xN,用于独立指定低位和高位错误.
但是,我不能给一个2xN阵列...
import numpy as np
import matplotlib.pyplot as plt
plt.bar(xrange(5), [2,5,3,4,7], yerr=[[1,4,2,3,6],[4,10,6,8,14]]) #DO NOT work!
并告诉我以下错误:
Traceback (most recent call last):
File "bar_stacked.py", line 9, in <module>
plt.bar(xrange(5), [2,5,3,4,7], yerr=[[1,4,2,3,6],[4,10,6,8,14]])
File "/usr/lib/pymodules/python2.7/matplotlib/pyplot.py", line 1742, in bar
ret = ax.bar(left, height, width, bottom, color, edgecolor, linewidth, yerr, xerr, ecolor, capsize, align, orientation, log, **kwargs)
File "/usr/lib/pymodules/python2.7/matplotlib/axes.py", line 4253, in bar
"incompatible sizes: bar() argument 'yerr' must be len(%s) or scalar" % nbars)
ValueError: incompatible sizes: bar() argument 'yerr' …