| """ |
| ====================================== |
| Long chain of connections using Sankey |
| ====================================== |
| |
| Demonstrate/test the Sankey class by producing a long chain of connections. |
| """ |
|
|
| import matplotlib.pyplot as plt |
|
|
| from matplotlib.sankey import Sankey |
|
|
| links_per_side = 6 |
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|
| def side(sankey, n=1): |
| """Generate a side chain.""" |
| prior = len(sankey.diagrams) |
| for i in range(0, 2*n, 2): |
| sankey.add(flows=[1, -1], orientations=[-1, -1], |
| patchlabel=str(prior + i), |
| prior=prior + i - 1, connect=(1, 0), alpha=0.5) |
| sankey.add(flows=[1, -1], orientations=[1, 1], |
| patchlabel=str(prior + i + 1), |
| prior=prior + i, connect=(1, 0), alpha=0.5) |
|
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|
| def corner(sankey): |
| """Generate a corner link.""" |
| prior = len(sankey.diagrams) |
| sankey.add(flows=[1, -1], orientations=[0, 1], |
| patchlabel=str(prior), facecolor='k', |
| prior=prior - 1, connect=(1, 0), alpha=0.5) |
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|
| fig = plt.figure() |
| ax = fig.add_subplot(1, 1, 1, xticks=[], yticks=[], |
| title="Why would you want to do this?\n(But you could.)") |
| sankey = Sankey(ax=ax, unit=None) |
| sankey.add(flows=[1, -1], orientations=[0, 1], |
| patchlabel="0", facecolor='k', |
| rotation=45) |
| side(sankey, n=links_per_side) |
| corner(sankey) |
| side(sankey, n=links_per_side) |
| corner(sankey) |
| side(sankey, n=links_per_side) |
| corner(sankey) |
| side(sankey, n=links_per_side) |
| sankey.finish() |
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| plt.show() |
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