[英]Remove consecutive positive/negative numbers from a dataframe
（已编辑）这是我当前的 DataFrame：
aapl tigr srpt
4 58.254690 2475.247525 131.665569
5 56.869882 2386.634845 140.016802
6 -58.709564 -2597.402597 NaN
7 NaN 2314.814815 145.539223
8 -60.786578 NaN -154.822728
9 -57.780089 -2283.105023 -140.646976
10 57.116747 2192.982456 130.992926
11 58.139535 2304.147465 115.074799
12 -54.942036 -2074.688797 -110.595001
我想知道是否有任何方法可以删除除第一个连续正数/负数以外的所有数，这样结果就是下面的 DataFrame：
aapl tigr srpt
4 58.254690 2475.247525 131.665569
6 -58.709564 -2597.402597 NaN
7 NaN 2314.814815 145.539223
8 -60.786578 NaN -154.822728
10 57.116747 2192.982456 130.992926
12 -54.942036 -2074.688797 -110.595001
利用：
In [1481]: x = df.fillna(1)['aapl'].gt(0)
In [1487]: ix = x[~x.eq(x.shift(1))].index
In [1488]: df.loc[ix]
Out[1488]:
aapl tigr srpt
4 58.254690 2475.247525 131.665569
6 -58.709564 -2597.402597 -143.492610
7 NaN 2314.814815 145.539223
8 -60.786578 -2032.520325 -154.822728
10 57.116747 2192.982456 130.992926
12 -54.942036 -2074.688797 -110.595001
如何从 dataframe 的列表中同时删除正数和负数？
[英]How to remove both positive and negative numbers from a list in dataframe?
如何使只有连续的负数从混合正数的列表中相互添加
[英]How to make only consecutive negative numbers add each other from a list mixed with positive numbers
如何找到列表中连续正数和负数的平均长度？
[英]How to find the average length of consecutive positive and negative numbers in a list?
在有正数和负数的 dataframe 中，如何将正数向上舍入和将负数向下舍入（均为 5 的倍数）？
[英]In a dataframe with both positive & negative numbers, how to round positive numbers up and round negative numbers down (both to multiples of 5)?
如何从 Pandas Dataframe 中删除连续的相反数字对？
[英]How to remove consecutive pairs of opposite numbers from Pandas Dataframe?
range() 函数中的负数 - 如何从正数打印到负数？
[英]Negative numbers in range() function - how to print from positive to negative numbers?
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.