如何在Matplot上绘制散布趋势线?蟒蛇 pandas [英] How can I draw scatter trend line on matplot? Python-Pandas

问题描述

我想在matplot上绘制散布趋势线.我该怎么办?

I want to draw a scatter trend line on matplot. How can I do that?

Python

import pandas as pd
import matplotlib.pyplot as plt
csv = pd.read_csv('/tmp/test.csv')
data = csv[['fee', 'time']]
x = data['fee']
y = data['time']
plt.scatter(x, y)
plt.show()

CSV

fee,time
100,650
90,700
80,860
70,800
60,1000
50,1200

时间是整数值.

散点图

推荐答案

对不起，我自己找到了答案.

I'm sorry I found the answer by myself.

如何在python matplotlib点中添加趋势线(散点图?

Python

import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
csv = pd.read_csv('/tmp/test.csv')
data = csv[['fee', 'time']]
x = data['fee']
y = data['time']
plt.scatter(x, y)

z = np.polyfit(x, y, 1)
p = np.poly1d(z)
plt.plot(x,p(x),"r--")

plt.show()

图表

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