以下是数据集的一部分:
18,8,307,130,3504,12,70,1,chevrolet
15,8,350,165,3693,11.5,70,1,buick
18,8,318,150,3436,11,70,1,plymouth
16,8,304,150,3433,12,70,1,amc
17,8,302,140,3449,10.5,70,1,ford
15,8,429,198,4341,10,70,1,ford
14,8,454,220,4354,9,70,1,chevrolet
14,8,440,215,4312,8.5,70,1,plymouth
代码如下:
data = sc.textFile("hw6/auto_mpg_original.csv")
records = data.map(lambda x: x.split(","))
hp = float(records.map(lambda x: x[3]))
disp = np.array(float(records.map(lambda x: x[2])))
final_data_1 = LabeledPoint(hp, disp)
错误如下:
Traceback (most recent call last):
File "/home/cloudera/Desktop/hw6.py", line 41, in <module>
hp = float(records.map(lambda x: x[3]))
TypeError: float() argument must be a string or a number
这看起来很基本,但我真的很难找到解决办法。你知道吗
检查
records.map()
的类型可能是RDD
。您可以在map()
中应用float()
,例如:但在使用前需要
.collect()
结果,例如:CSV的输入有问题,列为空或包含非数字值
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