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Bug in AutoDateLocator when dates are in reverse order #3524

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Merged
merged 3 commits into from
Sep 19, 2014
Merged

Bug in AutoDateLocator when dates are in reverse order #3524

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a6dc25d
BUG: Take the absolute difference between times when determining the …
cimarronm Sep 16, 2014
34230a7
TST: Added test for inverted limit with autodatelocator
cimarronm Sep 19, 2014
63c52f8
STY/TST: pep8 fixes for test_dates
cimarronm Sep 19, 2014
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BUG: Take the absolute difference between times when determining the … 
…correct tick interval
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@cimarronm
cimarronm committed Sep 16, 2014
commit a6dc25df3a6879a380c40bd74eb0227dcebd0a84
4 changes: 4 additions & 0 deletions lib/matplotlib/dates.py
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Expand Up @@ -898,6 +898,10 @@ def get_locator(self, dmin, dmax):
'Pick the best locator based on a distance.'
delta = relativedelta(dmax, dmin)

# take absolute difference
if dmin > dmax:
delta = -delta

numYears = (delta.years * 1.0)
numMonths = (numYears * 12.0) + delta.months
numDays = (numMonths * 31.0) + delta.days
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