Multiple Subplots

In the case of having multiple subplots, you can initialize one of the mw-plot class instances and utilize transform() method to transform one or more subplots.

Tranforming a Single Subplot

In a multiple subplot scenario, you can transform a single subplot with mw-plot. For example

>>> import matplotlib.pyplot as plt
>>> from mw_plot import MWFaceOn

>>> mw1 = MWFaceOn()
>>> fig, (ax1, ax2) = plt.subplots(1, 2, figsize=(10, 5))
>>> # transform the first subplot
>>> mw1.transform(ax2)

>>> # plot something in the first subplot
>>> ax1.plot([0, 1], [0, 1])  
[<matplotlib.lines.Line2D object at ...>]
>>> ax1.plot([0, 1], [1, 0])  
[<matplotlib.lines.Line2D object at ...>]
>>> ax1.set_aspect("equal")

>>> # you can plot something on top of the transformed subplot
>>> ax2.plot([-10, 10], [10, -10], c="r", ls="--")  
[<matplotlib.lines.Line2D object at ...>]

Tranform Multiple Subplots

To transform multiple subplots at once, you can pass a list of axes to the transform() method. For example

>>> import matplotlib.pyplot as plt
>>> from mw_plot import MWFaceOn

>>> mw1 = MWFaceOn()
>>> fig, (ax1, ax2) = plt.subplots(1, 2, figsize=(10, 5))
>>> # transform multiple axes with mw-plot at once
>>> mw1.transform([ax1, ax2])
>>> # plot something in both plots
>>> ax1.plot([10, -10], [10, -10], c="r", ls="--")  
[<matplotlib.lines.Line2D object at ...>]
>>> ax2.plot([10, -10], [-10, 10], c="r", ls="--")  
[<matplotlib.lines.Line2D object at ...>]

Tranform subplots with projection

If you are plotting sky maps with projection, your subplot should be in that particular projection already before transforming. For example,

>>> import matplotlib.pyplot as plt
>>> from mw_plot import MWSkyMap

>>> fig = plt.figure(figsize=(6, 4))
>>> ax1 = fig.add_subplot(221, projection="mollweide")
>>> ax2 = fig.add_subplot(222, projection="mollweide")
>>> ax3 = fig.add_subplot(223, projection="mollweide")
>>> ax4 = fig.add_subplot(224, projection="mollweide")

>>> mw1 = MWSkyMap(projection="mollweide", background="far-infrared")
>>> mw1.transform(ax1)
>>> mw2 = MWSkyMap(projection="mollweide", background="infrared")
>>> mw2.transform(ax2)
>>> mw3 = MWSkyMap(projection="mollweide", background="optical")
>>> mw3.transform(ax3)
>>> mw4 = MWSkyMap(projection="mollweide", background="gamma")
>>> mw4.transform(ax4)

>>> ax1.set_title("Far-Infrared")  
Text(...)
>>> ax2.set_title("Infrared")  
Text(...)
>>> ax3.set_title("Optical")  
Text(...)
>>> ax4.set_title("Gamma-Ray")  
Text(...)