Python实现平行坐标图的绘制(plotly)方式

import matplotlib.pyplot as plt
import pandas as pd
import seaborn as sns
from pandas.plotting import parallel_coordinates
 
data = sns.load_dataset('iris')
 
fig,axes = plt.subplots()
parallel_coordinates(data,'species',ax=axes)
fig.savefig('parallel.png')

import plotly as py
import plotly.graph_objs as go
py.offline.init_notebook_mode(connected=True) # 初始化设置
 
py.offline.iplot({
 "data": [go.Parcoords(
  line = dict(color = 'blue'),
  dimensions = list([
   dict(range = [1,5],
     constraintrange = [1,2],
     label = 'A', values = [1,4]),
   dict(range = [1.5,5],
     tickvals = [1.5,3,4.5],
     label = 'B', values = [3,1.5]),
   dict(range = [1,5],
     tickvals = [1,2,4,5],
     label = 'C', values = [2,4],
     ticktext = ['text 1', 'text 2', 'text 3', 'text 4']),
   dict(range = [1,5],
     label = 'D', values = [4,2])
  ])
 )],
 "layout": go.Layout(title="My first parallel coordinates")
})

df = sns.load_dataset('iris')
df['species_id'] = df['species'].map({'setosa':1,'versicolor':2,'virginica':3}) #用于颜色映射
 
py.offline.iplot({
 "data": [go.Parcoords(
  line = dict(color = df['species_id'],
     colorscale = [[0,'#D7C16B'],[0.5,'#23D8C3'],[1,'#F3F10F']]),
  dimensions = list([
   dict(range = [2,8],
    constraintrange = [4,8],
    label = 'Sepal Length', values = df['sepal_length']),
   dict(range = [1,6],
    label = 'Sepal Width', values = df['sepal_width']),
   dict(range = [0,8],
    label = 'Petal Length', values = df['petal_length']),
   dict(range = [0,4],
    label = 'Petal Width', values = df['petal_width'])
  ])
 )],
 "layout": go.Layout(title='Iris parallel coordinates plot')
})