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Commitd80c9fb

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Merge pull request#9801 from jklymak/fixdateticklocator
ENH: Change default Autodatelocator *interval_multiples*
2 parents7544c46 +0337883 commitd80c9fb

16 files changed

+62
-1271
lines changed
Lines changed: 37 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,37 @@
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Changed default `AutoDateLocator` kwarg ``interval_multiples`` to ``True``
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--------------------------------------------------------------------------
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The default value of the tick locator for dates, `.dates.AutoDateLocator`
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kwarg ``interval_multiples`` was set to ``False`` which leads to not-nice
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looking automatic ticks in many instances. The much nicer
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``interval_multiples=True`` is the new default. See below to get the
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old behavior back:
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..plot::
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import matplotlib.pyplot as plt
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import datetime
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import matplotlib.dates as mdates
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t0 = datetime.datetime(2009, 8, 20, 1, 10, 12)
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tf = datetime.datetime(2009, 8, 20, 1, 42, 11)
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fig, axs = plt.subplots(1, 2, constrained_layout=True)
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ax = axs[0]
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ax.axhspan(t0, tf, facecolor="blue", alpha=0.25)
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ax.set_ylim(t0 - datetime.timedelta(minutes=3),
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tf + datetime.timedelta(minutes=3))
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ax.set_title('NEW DEFAULT')
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ax = axs[1]
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ax.axhspan(t0, tf, facecolor="blue", alpha=0.25)
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ax.set_ylim(t0 - datetime.timedelta(minutes=3),
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tf + datetime.timedelta(minutes=3))
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# old behavior
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locator = mdates.AutoDateLocator(interval_multiples=False, )
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ax.yaxis.set_major_locator(locator)
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ax.yaxis.set_major_formatter(mdates.AutoDateFormatter(locator))
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ax.set_title('OLD')
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plt.show()

‎lib/matplotlib/dates.py

Lines changed: 12 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1158,7 +1158,7 @@ class AutoDateLocator(DateLocator):
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locations.
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"""
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def__init__(self,tz=None,minticks=5,maxticks=None,
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interval_multiples=False):
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interval_multiples=True):
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"""
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*minticks* is the minimum number of ticks desired, which is used to
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select the type of ticking (yearly, monthly, etc.).
@@ -1234,6 +1234,12 @@ def __init__(self, tz=None, minticks=5, maxticks=None,
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MICROSECONDLY: [1,2,5,10,20,50,100,200,500,1000,2000,
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5000,10000,20000,50000,100000,200000,500000,
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1000000]}
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ifinterval_multiples:
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# Swap "3" for "4" in the DAILY list; If we use 3 we get bad
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# tick loc for months w/ 31 days: 1, 4,..., 28, 31, 1
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# If we use 4 then we get: 1, 5, ... 25, 29, 1
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self.intervald[DAILY]= [1,2,4,7,14,21]
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self._byranges= [None,range(1,13),range(1,32),
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range(0,24),range(0,60),range(0,60),None]
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@@ -1338,7 +1344,11 @@ def get_locator(self, dmin, dmax):
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self._freq=freq
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ifself._byranges[i]andself.interval_multiples:
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byranges[i]=self._byranges[i][::interval]
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ifi==DAILYandinterval==14:
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# just make first and 15th. Avoids 30th.
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byranges[i]= [1,15]
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else:
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byranges[i]=self._byranges[i][::interval]
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interval=1
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else:
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byranges[i]=self._byranges[i]
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