LoginSignup
5
7

More than 3 years have passed since last update.

【Python】pandasで複数データのグラフ化

Last updated at Posted at 2019-07-03

Excelデータから指定列の組合せをグラフ化

テストデータ

Test.xlsxの内容

A1 B1 C1 A2 B2 C2
1 3.3 15 0.5 3.6 25
2 3.4 18 1 3.5 30
3 3.6 20 2 3.4 40
4 3.7 25 4 3.7 42
5 3.8 28 5 3.8 44
6 3.9 30 6 3.9 45
7 4 35 7 4.1 48
8 4.1 38 9 4.15 50
9 4.2 40 9.5 4.2 52
10 4.2 42 10 4.17 53

1.2グループのデータ(A1-B1とA2-B2)を1つのグラフにする

import pandas as pd
import matplotlib.pyplot as plt

df= pd.read_excel('Test.xlsx', sheet_name='Sheet1', usecols=[0,1,3,4],header=0) 

fig = plt.figure()
ax = fig.add_subplot(1,1,1)

ax.plot('A1', 'B1', data=df, label='No 1', marker='o')
ax.plot('A2', 'B2', data=df, label='No 2', marker='o')

plt.show()

image.png

2.2軸(A1-B1とA1-C1)のあるグラフ

import pandas as pd
import matplotlib.pyplot as plt

df= pd.read_excel('Test.xlsx', sheet_name='Sheet1', usecols=[0,1,2] ,header=0) 

fig = plt.figure()
ax = fig.add_subplot(1,1,1)

ax.plot('A1', 'B1', data=df, label='B1', marker='o',color="g")
ax1 = ax.twinx()
ax1.plot('A1', 'C1', data=df, label='C1', marker='X',color="r")
plt.show()

image.png

5
7
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
5
7