spacepy.plot.shared_ylabel(axes, txt, *args, **kwargs)[source]

Create a ylabel that spans several subplots

Useful for a multi-panel plot where several subplots have the same units/quantities on the y axis.


The Axes objects (i.e. subplots) which should share a single label


The label to place in the middle of all the axes objects.


The Text object for the label.

Other Parameters
Additional arguments and keywords are passed through to


This function can be fairly fragile and should only be used for fairly simple layouts, e.g., a one-column multi-row plot stack.

The label is associated with the bottommost subplot in axes.


>>> import spacepy.plot.utils
>>> import matplotlib.pyplot as plt
>>> fig = plt.figure()
>>> #Make three stacked subplots
>>> ax0 = fig.add_subplot(311)
>>> ax1 = fig.add_subplot(312)
>>> ax2 = fig.add_subplot(313)
>>> ax0.plot([1, 2, 3], [1, 2, 1]) #just make some lines
[<matplotlib.lines.Line2D object at 0x0000000>]
>>> ax1.plot([1, 2, 3], [1, 2, 1])
[<matplotlib.lines.Line2D object at 0x0000000>]
>>> ax2.plot([1, 2, 3], [1, 2, 1])
[<matplotlib.lines.Line2D object at 0x0000000>]
>>> #Create a green label across all three axes
>>> spacepy.plot.utils.shared_ylabel([ax0, ax1, ax2],
... 'this is a very long label that spans all three axes', color='g')