Panel.ffill ignores axis parameter and fill along axis=1 #14499
Description
A small, complete example of the issue
a = pd.Panel({'a':np.arange(15).reshape((5,3)), 'b':np.arange(15,30).reshape((5,3))})
a['a'].loc[1,1] = np.nan
a['a']
Out[36]:
0 1 2
0 0 1.0 2
1 3 NaN 5
2 6 7.0 8
3 9 10.0 11
4 12 13.0 14
a.ffill(axis=2)['a']
Out[38]:
0 1 2
0 0.0 1.0 2.0
1 3.0 1.0 5.0
2 6.0 7.0 8.0
3 9.0 10.0 11.0
4 12.0 13.0 14.0Expected Output
a.at['a', 1, 1] == 3
If you ffill along axis=2, you should get 3 instead of 1
Output of pd.show_versions()
Pandas 0.19.0