使用 DataFrame.plot 设置散点图的颜色 [英] Set the color for scatter-plot with DataFrame.plot

问题描述

我正在使用 python 绘制熊猫数据帧

I am using python to plot a pandas DataFrame

我这样设置绘图颜色:

allDf = pd.DataFrame({
    'x':[0,1,2,4,7,6],
    'y':[0,3,2,4,5,7],
    'a':[1,1,1,0,0,0],
    'c':['red','green','blue','red','green','blue']
},index = ['p1','p2','p3','p4','p5','p6'])

allDf.plot(kind='scatter',x='x',y='y',c='c')
plt.show()

但是它不起作用(每个点都有蓝色)

However it doesn't work (every point has a blue color)

如果我像这样改变DataFrame的定义

If I changed the definition of DataFrame like this

'c':[1,2,1,2,1,2]

出现彩色但只有黑白，我想用蓝色，红色等等...

It appears color but only black and white, I want to use blue, red and more...

推荐答案

替换为:

allDf.plot(kind='scatter',x='x',y='y',c=allDf.c)

输出:

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