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Commit15c50ef

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timhoffmmeeseeksmachine
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Backport PR#29272: DOC: Add section on translating between Axes and pyplot interface
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‎galleries/users_explain/figure/api_interfaces.rst‎

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@@ -121,6 +121,51 @@ In the explicit interface, this would be:
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axs[0].plot([1, 2, 3], [0, 0.5, 0.2])
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axs[1].plot([3, 2, 1], [0, 0.5, 0.2])
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Translating between the Axes interface and the pyplot interface
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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You may find either interface in existing code, and unfortunately sometimes even
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mixtures. This section describes the patterns for specific operations in both
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interfaces and how to translate from one to the other.
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- Creating figures is the same for both interfaces: Use the respective `.pyplot`
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functions ``plt.figure()``, ``plt.subplots()``, ``plt.subplot_mosaic()``.
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For the Axes interface, you typically store the created Figure (and possibly
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Axes) in variables for later use. When using the pyplot interface, these
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values are typically not stored. Example:
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- Axes: ``fig, ax = plt.subplots()``
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- pyplot: ``plt.subplots()``
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- "Plotting" functions, i.e. functions that add data, are named the same and
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have identical parameters on the Axes and in pyplot. Example:
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- Axes: ``ax.plot(x, y)``
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- pyplot: ``plt.plot(x, y)``
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- Functions that retrieve properties are named like the property in pyplot
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and are prefixed with ``get_`` on the Axes. Example:
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- Axes: ``label = ax.get_xlabel()``
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- pyplot: ``label = plt.xlabel()``
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- Functions that set properties like the property in pyplot and are prefixed with
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``set_`` on the Axes. Example:
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- Axes: ``ax.set_xlabel("time")``
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- pyplot: ``plt.xlabel("time")``
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Here is a short summary of the examples again as a side-by-side comparison:
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================== ============================ ========================
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Operation Axes interface pyplot interface
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================== ============================ ========================
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Creating figures ``fig, ax = plt.subplots()`` ``plt.subplots()``
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Plotting data ``ax.plot(x, y)`` ``plt.plot(x, y)``
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Getting properties ``label = ax.get_xlabel()`` ``label = plt.xlabel()``
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Setting properties ``ax.set_xlabel("time")`` ``plt.xlabel("time")``
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================== ============================ ========================
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Why be explicit?
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^^^^^^^^^^^^^^^^
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