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Creating a DataFrame from Series with unsorted indeces gives completely bad data #1745

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beaumartinez opened this issue Aug 8, 2012 · 5 comments
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Creating a DataFrame from Series with unsorted indeces gives completely bad data #1745

beaumartinez opened this issue Aug 8, 2012 · 5 comments
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@beaumartinez
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Creating a DataFrame from Series with unsorted indeces gives completely bad data.

I've written a module that reproduces the bug—unless this is by design. Give it a try.

(I'm running pandas==0.8.1, Python 2.7.2, and OS X Mountain Lion.)
@beaumartinez
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It turns out it's by design—

While pandas does not force you to have a sorted date index, some of these methods may have unexpected or incorrect behavior if the dates are unsorted. So please be careful

@wesm wesm reopened this Aug 10, 2012
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wesm commented Aug 10, 2012

No, what you show in the script looks like a bug, let me have a look.

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wesm commented Aug 10, 2012

Definitely a bug. I'll sort out a fix right now once I figure out what's happening

@wesm wesm closed this as completed in aea7c45 Aug 10, 2012
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wesm commented Aug 10, 2012

Fixed the underlying issue

@wesm wesm mentioned this issue Aug 10, 2012
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@beaumartinez
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👍

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