Matplotlib是Python中的一个库,它是数字的-NumPy库的数学扩展。轴类包含大多数图形元素:Axis,Tick,Line2D,Text,Polygon等,并设置坐标系。 Axes实例通过callbacks属性支持回调。
matplotlib.axes.Axes.get_legend_handles_labels()函数
matplotlib库的axiss模块中的Axes.get_legend_handles_labels()函数用于返回图例的句柄和标签。
用法: Axes.get_legend_handles_labels(self)
参数:此方法不接受任何参数。
返回:此函数返回图例的句柄和标签。
以下示例说明了matplotlib.axes中的matplotlib.axes.Axes.get_legend_handles_labels()函数:
范例1:
# Implementation of matplotlib function
import matplotlib.pyplot as plt
import numpy as np
fig, ax = plt.subplots()
ax.plot([1, 6, 3, 8, 34, 13, 56, 67], color ="green")
h, l = ax.get_legend_handles_labels()
# print(h, l)
text ="Legend is present"
if h ==[]:
text ="No legend present"
else:
text+="and labels are:"+str(l)
ax.text(2.5, 60, text, fontweight ="bold")
fig.suptitle('matplotlib.axes.Axes.get_legend_handles_labels()\
function Example\n', fontweight ="bold")
fig.canvas.draw()
plt.show()
输出:
范例2:
# Implementation of matplotlib function
import numpy as np
np.random.seed(19680801)
import matplotlib.pyplot as plt
fig, ax = plt.subplots()
for color in [ 'tab:green', 'tab:blue', 'tab:orange']:
n = 70
x, y = np.random.rand(2, n)
scale = 1000.0 * np.random.rand(n)
ax.scatter(x, y, c = color, s = scale, label = color,
alpha = 0.35)
ax.legend()
ax.grid(True)
h, l = ax.get_legend_handles_labels()
print(h, l)
text =" Legend is present"
if h ==[]:
text ="No legend present"
else:
text+=" and labels are:\n"+str(l)
ax.text(0.15, 0.45, text, fontweight ="bold")
fig.suptitle('matplotlib.axes.Axes.get_legend_handles_labels()\
function Example\n', fontweight ="bold")
fig.canvas.draw()
plt.show()
输出:
相关用法
注:本文由纯净天空筛选整理自SHUBHAMSINGH10大神的英文原创作品 Matplotlib.axes.Axes.get_legend_handles_labels() in Python。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。