我有以下代码生成气泡图,然后将标签作为文本添加到图中:
fig, ax = plt.subplots(figsize = (5,10))
# create data
x = [1,1,1,1,1,1,1,1,1,1]
y = ['A','B','C','D',
'E','F','G','H','I','']
z = [10,20,80,210,390,1050,2180,4690,13040,0]
labels = [1,2,8,21,39,105,218,469,1304]
plt.xlim(0.9,1.1)
for i, txt in enumerate(labels):
ax.annotate(txt, (x[i], y[i]), ha='center', va='center', )
plt.scatter(x, y, s=z*4000, c="#8C4799", alpha=0.3)
我有垂直和水平居中的文本标签(即1304,469等),但理想情况下,我希望它向右移动,以便远离气泡。我已经尝试过ha=right
,但它只推动了一点点。
有什么可以用来将其完全从气泡中移开的东西吗?即代码,我可以输入以下for loop
:
for i, txt in enumerate(labels):
ax.annotate(txt, (x[i], y[i]), ha='center', va='center', )
答案 0 :(得分:2)
我只是使用偏移百分比(例如20%)来重新定位文本的x坐标。另外,您可以关闭x限制的手动设置。
fig, ax = plt.subplots(figsize=(4, 10))
x = [1,1,1,1,1,1,1,1,1,1]
y = ['A','B','C','D',
'E','F','G','H','I','']
z = [10,20,80,210,390,1050,2180,4690,13040,0]
labels = [1,2,8,21,39,105,218,469,1304]
for i, txt in enumerate(labels):
ax.annotate(txt, (x[i]*1.2, y[i]), ha='center', va='center', )
plt.scatter(x, y, s=z*4000, c="#8C4799", alpha=0.3)
答案 1 :(得分:1)
xytext
的参数ax.annotate
让您执行以下操作:
fig,ax = plt.subplots(figsize =(5,10))
# create data
x = [1,1,1,1,1,1,1,1,1,1]
y = ['A','B','C','D',
'E','F','G','H','I','']
z = [10,20,80,210,390,1050,2180,4690,13040,0]
labels = [1,2,8,21,39,105,218,469,1304]
plt.xlim(0.9,1.1)
for i, txt in enumerate(labels):
ax.annotate(txt, (x[i], y[i]), ha='center', va='center', xytext=(1.05,y[i]) )
plt.scatter(x, y, s=z*4000, c="#8C4799", alpha=0.3)
带来此:
编辑:如果希望标签位于每个圆圈的右边,则必须创建一个位置数组,然后遍历它
答案 2 :(得分:1)
由于气泡的大小s
为s=z*4000
,因此气泡的半径为np.sqrt(z*4000)/2
。 (有关说明,请参见scatter plot marker size)。
因此,您将创建一个注释,该注释位于数据坐标中气泡的中心,并以点为单位偏移np.sqrt(z*4000)/2
(或者可能再增加2或3个点,以使其看起来很好)。 / p>
这将使用
完成annotate("text", xy=(x[i],y[i]),
xytext=(np.sqrt(z[i]*4000)/2+2, 0), textcoords="offset points")
完整示例:
import matplotlib.pyplot as plt
import numpy as np
fig, ax = plt.subplots(figsize = (5,10))
# create data
x = [1,1,1,1,1,1,1,1,1,1]
y = ['A','B','C','D',
'E','F','G','H','I','']
z = [10,20,80,210,390,1050,2180,4690,13040,0]
labels = [1,2,8,21,39,105,218,469,1304]
plt.xlim(0.9,1.1)
sc = plt.scatter(x, y, s=z*4000, c="#8C4799", alpha=0.3)
for txt, size, xi, yi in zip(labels, sc.get_sizes(), x,y):
ax.annotate(txt, xy=(xi,yi), xytext=(np.sqrt(size)/2+2, 0),
textcoords="offset points",
ha='left', va='center', )
plt.show()