pandas 熊猫：在散点图中使用颜色
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pandas: Using color in a scatter plot
提问by Edamame
I have a pandas dataframe:
我有一个Pandas数据框：
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| field_0 | field_1 | field_2 |
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| 0 | 1.5 | 2.9 |
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| 1 | 1.3 | 2.6 |
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| : |
--------------------------------------
| 1 | 2.1 | 3.2 |
--------------------------------------
| 0 | 1.1 | 2.1 |
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I can create a scatter plot for field_1 vs. field_2 like below:
我可以为 field_1 与 field_2 创建一个散点图，如下所示：
%matplotlib notebook
import matplotlib.pyplot as plt
import matplotlib
matplotlib.style.use('ggplot')
my_df.plot(x='field_1', y='field_2', kind = 'scatter')
However, I am wondering is it possible to include field_0 in the plot? So when field_0 = 0, the point is blue; when field_1 = 1, the point is red.
但是，我想知道是否可以在图中包含 field_0？所以当field_0 = 0时，点是蓝色的；当 field_1 = 1 时，该点为红色。
Thanks!
谢谢！
回答by MaxU
you can do it this way:
你可以这样做：
col = df.field_0.map({0:'b', 1:'r'})
df.plot.scatter(x='field_1', y='field_2', c=col)
Result:
结果：
