我正在尝试对存储在pandas系列对象中的一系列值应用过滤器.如果满足标准,则期望的输出是值本身,否则为零.我只能完成一半工作:
criterion = testdata.map(lambda x: x < 30 or x > 60)
testdata[criterion] =
Date
2015-01-05 62.358615
2015-01-06 64.349507
2015-01-13 61.726110
2015-01-14 63.574864
2015-01-15 66.020421
2015-01-16 63.041819
2015-01-20 61.458298
Name: rsi, dtype: float64
哪里:
testdata =
Date
2014-12-29 45.821073
2014-12-30 48.946830
2014-12-31 57.737593
2015-01-02 55.424047
2015-01-05 62.358615
2015-01-06 64.349507
2015-01-07 59.452935
2015-01-08 51.182115
2015-01-09 55.044419
2015-01-12 59.365017
2015-01-13 61.726110
2015-01-14 63.574864
2015-01-15 66.020421
2015-01-16 63.041819
2015-01-20 61.458298
2015-01-21 54.432635
2015-01-22 46.985675
2015-01-23 49.740981
2015-01-26 45.102370
2015-01-27 49.800855
Name: rsi, dtype: …