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Merged
merged 1 commit into from
Dec 7, 2014
Merged

reindex multi-index at level with reordered labels #9019

merged 1 commit into from
Dec 7, 2014

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behzadnouri
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closes #4088

on branch:

>>> df
                     vals
first second third       
mid   3rd    992     1.96
             562    12.06
      1st    73     -6.46
             818   -15.75
             658     5.90
btm   2nd    915     9.75
             474    -1.47
             905    -6.03
      1st    717     8.01
             909   -21.12
      3rd    616    11.91
             675     1.06
             579    -4.01
top   1st    241     1.79
             363     1.71
      3rd    677    13.38
             238   -16.77
             407    17.19
      2nd    728   -21.55
             36      8.09
>>> df.reindex(['top', 'mid', 'btm'], level='first')
                     vals
first second third       
top   1st    241     1.79
             363     1.71
      3rd    677    13.38
             238   -16.77
             407    17.19
      2nd    728   -21.55
             36      8.09
mid   3rd    992     1.96
             562    12.06
      1st    73     -6.46
             818   -15.75
             658     5.90
btm   2nd    915     9.75
             474    -1.47
             905    -6.03
      1st    717     8.01
             909   -21.12
      3rd    616    11.91
             675     1.06
             579    -4.01
>>> df.reindex(['1st', '2nd', '3rd'], level='second')
                     vals
first second third       
mid   1st    73     -6.46
             818   -15.75
             658     5.90
      3rd    992     1.96
             562    12.06
btm   1st    717     8.01
             909   -21.12
      2nd    915     9.75
             474    -1.47
             905    -6.03
      3rd    616    11.91
             675     1.06
             579    -4.01
top   1st    241     1.79
             363     1.71
      2nd    728   -21.55
             36      8.09
      3rd    677    13.38
             238   -16.77
             407    17.19
>>> df.reindex(['top', 'btm'], level='first').reindex(['1st', '2nd'], level='second')
                     vals
first second third       
top   1st    241     1.79
             363     1.71
      2nd    728   -21.55
             36      8.09
btm   1st    717     8.01
             909   -21.12
      2nd    915     9.75
             474    -1.47
             905    -6.03

jreback
jreback reviewed Dec 6, 2014
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pandas/lib.pyx
@@ -1138,6 +1138,27 @@ def row_bool_subset_object(ndarray[object, ndim=2] values,

return out

@cython.boundscheck(False)
@cython.wraparound(False)
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hmm, something like this doesn't already exist in groupy.py (e.g. in the sortlevel section). (doesn't look like it via casual glance).

@jreback jreback added Bug MultiIndex Reshaping Concat, Merge/Join, Stack/Unstack, Explode labels Dec 6, 2014
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jreback commented Dec 6, 2014

looks good. just need a release note (bug fixes).

@jreback jreback mentioned this pull request Dec 6, 2014
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@behzadnouri
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added the release notes; all green

@jreback jreback added this to the 0.15.2 milestone Dec 7, 2014
jreback added a commit that referenced this pull request Dec 7, 2014
@jreback
Merge pull request #9019 from behzadnouri/mi-reidx
e51eb9e 
reindex multi-index at level with reordered labels
@jreback jreback merged commit e51eb9e into pandas-dev:master Dec 7, 2014
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jreback commented Dec 7, 2014

@behzadnouri cool thanks!

was a bit more complicated that first glance....!

@behzadnouri behzadnouri deleted the mi-reidx branch December 7, 2014 00:29
@eddy-geek eddy-geek mentioned this pull request Sep 22, 2019
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Reording a multiindex by only specifiying the order on level 0
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@behzadnouri @jreback