Matplotlib:不要在图例中显示错误栏 [英] Matplotlib: Don't show errorbars in legend

问题描述

我正在绘制一系列带有x和y错误的数据点，但不希望将错误栏包含在图例中(仅包括标记).有办法吗?

I'm plotting a series of data points with x and y error but do NOT want the errorbars to be included in the legend (only the marker). Is there a way to do so?

示例:

import matplotlib.pyplot as plt
import numpy as np
subs=['one','two','three']
x=[1,2,3]
y=[1,2,3]
yerr=[2,3,1]
xerr=[0.5,1,1]
fig,(ax1)=plt.subplots(1,1)
for i in np.arange(len(x)):
    ax1.errorbar(x[i],y[i],yerr=yerr[i],xerr=xerr[i],label=subs[i],ecolor='black',marker='o',ls='')
ax1.legend(loc='upper left', numpoints=1)
fig.savefig('test.pdf', bbox_inches=0)

推荐答案

您可以修改图例处理程序.请参见 matplotlib的传奇指南. 改编您的示例，它可能显示为:

You can modify the legend handler. See the legend guide of matplotlib. Adapting your example, this could read:

import matplotlib.pyplot as plt
import numpy as np

subs=['one','two','three']
x=[1,2,3]
y=[1,2,3]
yerr=[2,3,1]
xerr=[0.5,1,1]
fig,(ax1)=plt.subplots(1,1)

for i in np.arange(len(x)):
    ax1.errorbar(x[i],y[i],yerr=yerr[i],xerr=xerr[i],label=subs[i],ecolor='black',marker='o',ls='')

# get handles
handles, labels = ax1.get_legend_handles_labels()
# remove the errorbars
handles = [h[0] for h in handles]
# use them in the legend
ax1.legend(handles, labels, loc='upper left',numpoints=1)


plt.show()

这产生

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