属性错误：模块“matplotlib.cm”没有属性“RdylBu”；

Question

这段代码基本上是试图绘制平行坐标。由于结果是连续变量，因此要查看每行数据的结果模式；需要根据结果分配色调。本书使用plot.cm.RdYlBu来处理类似的情况，但当我尝试使用它时，出现属性错误。

这是书中的类似代码

import matplotlib.pyplot as plot
from math import exp

target_url = ("http://archive.ics.uci.edu/ml/machine-learning-databases/abalone/abalone.data")

#read abalone data
abalone = pd.read_csv(target_url,header=None, prefix="V")
abalone.columns = ['Sex', 'Length', 'Diameter', 'Height', 'Whole Wt', 'Shucked Wt', 'Viscera Wt', 'Shell Wt', 'Rings']

#get summary to use for scaling
summary = abalone.describe()
minRings = summary.iloc[3,7]
maxRings = summary.iloc[7,7]
nrows = len(abalone.index)

for i in range(nrows):
#plot rows of data as if they were series data
    dataRow = abalone.iloc[i,1:8]
    labelColor = (abalone.iloc[i,8] - minRings) / (maxRings - minRings)
    dataRow.plot(color=plot.cm.RdYlBu(labelColor), alpha=0.5)
plot.xlabel("Attribute Index")
plot.ylabel(("Attribute Values"))
plot.show()