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bjonen opened this issue Mar 31, 2015 · 6 comments
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Resample BM adds extra index point #9756

bjonen opened this issue Mar 31, 2015 · 6 comments
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Bug Resample resample method
Milestone
0.16.1

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@bjonen
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bjonen commented Mar 31, 2015 

In [1]: index = pd.DatetimeIndex(start='20150101', end='20150331', freq='B')

In [2]: df = pd.DataFrame(index=index, data=len(index)*[0])

In [3]: df.resample('BM', how='last')
Out[3]:
             0
2015-01-30   0
2015-02-27   0
2015-03-31   0
2015-04-30 NaN

This is both in 0.14.1 and 0.15.2
@rockg
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rockg commented Mar 31, 2015

This actually might be fixed on master related to a bunch of resample fixes.

@rockg
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rockg commented Mar 31, 2015

Confirmed that it is not fixed on master.

@jreback jreback added Bug Resample resample method labels Apr 12, 2015
@jreback
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jreback commented Apr 12, 2015

couple of resample bins issues still lurking; #9623 fixed a lot of them

@jreback jreback added this to the Next Major Release milestone Apr 12, 2015
@jreback jreback changed the title Resample BM adds nan entry Resample BM adds extra index point Apr 12, 2015
@scari
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scari commented Apr 13, 2015

Working on this.

@scari
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scari commented Apr 14, 2015

Also reproducible /w resample BQ

scari added a commit to scari/pandas that referenced this issue May 1, 2015
@scari
BUG: Resample BM/BQ adds extra index point pandas-dev#9756
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@scari scari mentioned this issue May 4, 2015
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@jreback jreback modified the milestones: 0.16.1, Next Major Release May 4, 2015
scari added a commit to scari/pandas that referenced this issue May 4, 2015
@scari
BUG: Resample BM/BQ adds extra index point pandas-dev#9756
2980fa1
jreback pushed a commit that referenced this issue May 4, 2015
@scari @jreback
BUG: Resample BM/BQ adds extra index point #9756
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jreback commented May 4, 2015

closed by #10044

@jreback jreback closed this as completed May 4, 2015
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Bug Resample resample method
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BUG: Resample BM/BQ adds extra index point #9756 scari/pandas
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@bjonen @jreback @scari @rockg