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Commitbcae8a7

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Discourage use of plot_date()
1 parentd86112a commitbcae8a7

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3 files changed

+25
-9
lines changed

3 files changed

+25
-9
lines changed
Lines changed: 9 additions & 0 deletions
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@@ -0,0 +1,9 @@
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``plot_date``
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~~~~~~~~~~~~~
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The use of `~.Axes.plot_date` is discouraged. This method exists for historic
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reasons and may be deprecated in the future.
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- ``datetime``-like data should directly be plotted using `~.Axes.plot`.
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- If you need to plot plain numeric data as:ref:`date-format` or
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need to set a timezone, call ``ax.xaxis.axis_date`` / ``ax.yaxis.axis_date``
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before `~.Axes.plot`. See `.Axis.axis_date`.

‎lib/matplotlib/axes/_axes.py

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1616,7 +1616,7 @@ def plot_date(self, x, y, fmt='o', tz=None, xdate=True, ydate=False,
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"""
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Plot co-ercing the axis to treat floats as dates.
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..note::
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..admonition:: Discouraged
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This method exists for historic reasons and will be deprecated in
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the future.

‎lib/matplotlib/tests/test_axes.py

Lines changed: 15 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -670,7 +670,8 @@ def test_single_date():
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data1= [-65.54]
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fig,ax=plt.subplots(2,1)
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ax[0].plot_date(time1+dt,data1,'o',color='r')
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withpytest.warns(PendingDeprecationWarning):
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ax[0].plot_date(time1+dt,data1,'o',color='r')
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ax[1].plot(time1,data1,'o',color='r')
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@@ -5830,11 +5831,13 @@ def test_date_timezone_x():
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# Same Timezone
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plt.figure(figsize=(20,12))
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plt.subplot(2,1,1)
5833-
plt.plot_date(time_index, [3]*3,tz='Canada/Eastern')
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withpytest.warns(PendingDeprecationWarning):
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plt.plot_date(time_index, [3]*3,tz='Canada/Eastern')
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# Different Timezone
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plt.subplot(2,1,2)
5837-
plt.plot_date(time_index, [3]*3,tz='UTC')
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withpytest.warns(PendingDeprecationWarning):
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plt.plot_date(time_index, [3]*3,tz='UTC')
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@image_comparison(['date_timezone_y.png'])
@@ -5847,12 +5850,14 @@ def test_date_timezone_y():
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# Same Timezone
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plt.figure(figsize=(20,12))
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plt.subplot(2,1,1)
5850-
plt.plot_date([3]*3,
5851-
time_index,tz='Canada/Eastern',xdate=False,ydate=True)
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withpytest.warns(PendingDeprecationWarning):
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plt.plot_date([3]*3,
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time_index,tz='Canada/Eastern',xdate=False,ydate=True)
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# Different Timezone
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plt.subplot(2,1,2)
5855-
plt.plot_date([3]*3,time_index,tz='UTC',xdate=False,ydate=True)
5859+
withpytest.warns(PendingDeprecationWarning):
5860+
plt.plot_date([3]*3,time_index,tz='UTC',xdate=False,ydate=True)
58565861

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58585863
@image_comparison(['date_timezone_x_and_y.png'],tol=1.0)
@@ -5865,11 +5870,13 @@ def test_date_timezone_x_and_y():
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# Same Timezone
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plt.figure(figsize=(20,12))
58675872
plt.subplot(2,1,1)
5868-
plt.plot_date(time_index,time_index,tz='UTC',ydate=True)
5873+
withpytest.warns(PendingDeprecationWarning):
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plt.plot_date(time_index,time_index,tz='UTC',ydate=True)
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# Different Timezone
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plt.subplot(2,1,2)
5872-
plt.plot_date(time_index,time_index,tz='US/Eastern',ydate=True)
5878+
withpytest.warns(PendingDeprecationWarning):
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plt.plot_date(time_index,time_index,tz='US/Eastern',ydate=True)
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@image_comparison(['axisbelow.png'],remove_text=True)

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