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partial fix for issue #7712 #8251

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partial fix for issue #7712 #8251

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4 changes: 2 additions & 2 deletions lib/matplotlib/dates.py
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Original file line number Diff line number Diff line change
Expand Up @@ -927,7 +927,7 @@ def __init__(self, tz=None, minticks=5, maxticks=None,
YEARLY : [1, 2, 4, 5, 10, 20, 40, 50, 100, 200, 400, 500,
1000, 2000, 4000, 5000, 10000],
MONTHLY : [1, 2, 3, 4, 6],
DAILY : [1, 2, 3, 7, 14],
DAILY : [1, 2, 3, 7, 14, 21],
HOURLY : [1, 2, 3, 4, 6, 12],
MINUTELY: [1, 5, 10, 15, 30],
SECONDLY: [1, 5, 10, 15, 30],
Expand All @@ -951,7 +951,7 @@ def __init__(self, tz=None, minticks=5, maxticks=None,
SECONDLY, MICROSECONDLY]
self.minticks = minticks

self.maxticks = {YEARLY: 11, MONTHLY: 12, DAILY: 11, HOURLY: 12,
self.maxticks = {YEARLY: 11, MONTHLY: 8, DAILY: 6, HOURLY: 12,
MINUTELY: 11, SECONDLY: 11, MICROSECONDLY: 8}
if maxticks is not None:
try:
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Binary file added lib/matplotlib/tests/baseline_images/test_dates/date_no_tick_overlap.png
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9 changes: 9 additions & 0 deletions lib/matplotlib/tests/test_dates.py
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Expand Up @@ -467,3 +467,12 @@ def test_DayLocator():
def test_tz_utc():
dt = datetime.datetime(1970, 1, 1, tzinfo=mdates.UTC)
dt.tzname()


@image_comparison(baseline_images=['date_no_tick_overlap.png'],
extensions=['png'])
def test_datetime_tick_overlap():
#test issue 7712
dates = [datetime.datetime(2017,1,i) for i in range(1,30)]
values = list(range(1,30))
plt.plot(dates, values)