我对我处理这个问题的方式有疑问 这段代码的作用基本上是:
waps_df2 = waps_df1-waps_df1.shift(1)
waps_df2 = waps_df2.fillna(0)
waps_x = waps_df2.div(waps_df1.shift(1))
waps_ad = waps_x.add(1)
waps_x3 = waps_ad.shift(+1)
其中 x1 是天 d 的值 其中 x2 是天 d + 1 的值 x3 是我根据以前的值计算的值
当我的师出现以下情况时: 例如,当2017-09-010和POS_16_20_和2017-09-011这一天发生时(0.5-0)/ 0,它将是无限的。我想在我的部门使用一个条件,如果我划分的值为零,则设置 x3 = x2 因为我不想要无限值
我想用我的最后一个值替换它。
代码:
produktname POS_00_04 POS_04_08 POS_08_12 POS_12_16 POS_16_20 POS_20_24
datum_von
2017-09-09 0.0 0.0 0.0 0.0 0.00 0.0
2017-09-10 0.0 0.0 0.0 0.0 0.00 0.0
2017-09-11 0.0 0.0 0.0 0.0 0.05 0.0
2017-09-12 0.0 0.0 0.0 0.0 0.06 0.0
2017-09-13 0.0 0.0 0.0 0.0 0.00 0.0
我的约会对象:
waps_pos = waps_pos.mask((waps_df1!=0), waps_pos.div(waps_df1.shift(1))
waps_x = np.where(waps_df1.shift(1)>0, waps_pos.div(waps_df1.shift(1), waps_df1)
我尝试使用面具
waps_x = np.where(waps_df1.shift(1)>0, waps_pos.div(waps_df1.shift(1), waps_df1)
或
The mandatory tag '%1' is missing or incorrect.
答案 0 :(得分:1)
waps_df2 = waps_df1.sub(waps_df1.shift(1)).fillna(0)
print (waps_df2)
POS_00_04 POS_04_08 POS_08_12 POS_12_16 POS_16_20 POS_20_24
datum_von
2017-09-09 0.0 0.0 0.0 0.0 0.00 0.0
2017-09-10 0.0 0.0 0.0 0.0 0.00 0.0
2017-09-11 0.0 0.0 0.0 0.0 0.05 0.0
2017-09-12 0.0 0.0 0.0 0.0 0.01 0.0
2017-09-13 0.0 0.0 0.0 0.0 -0.06 0.0
waps_x = waps_df2.div(waps_df1.shift(1))
print (waps_x)
POS_00_04 POS_04_08 POS_08_12 POS_12_16 POS_16_20 POS_20_24
datum_von
2017-09-09 NaN NaN NaN NaN NaN NaN
2017-09-10 NaN NaN NaN NaN NaN NaN
2017-09-11 NaN NaN NaN NaN inf NaN
2017-09-12 NaN NaN NaN NaN 0.200000 NaN
2017-09-13 NaN NaN NaN NaN -1.000000 NaN
您可以按numpy.isinf
检查inf值,并将waps_df1
替换为mask
:
print (np.isinf(waps_x))
POS_00_04 POS_04_08 POS_08_12 POS_12_16 POS_16_20 POS_20_24
datum_von
2017-09-09 False False False False False False
2017-09-10 False False False False False False
2017-09-11 False False False False True False
2017-09-12 False False False False False False
2017-09-13 False False False False False False
waps_x = waps_x.mask(np.isinf(waps_x), waps_df1)
print (waps_x)
POS_00_04 POS_04_08 POS_08_12 POS_12_16 POS_16_20 POS_20_24
datum_von
2017-09-09 NaN NaN NaN NaN NaN NaN
2017-09-10 NaN NaN NaN NaN NaN NaN
2017-09-11 NaN NaN NaN NaN 0.05 NaN
2017-09-12 NaN NaN NaN NaN 0.20 NaN
2017-09-13 NaN NaN NaN NaN -1.00 NaN