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Add logic to plot the found path and show the start and the end #149

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Add logic to plot the found path and show the start and the end #149

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11 changes: 10 additions & 1 deletion docs/EXAMPLES.md
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Expand Up @@ -121,13 +121,22 @@ Sometimes it is hard to see the finer points of a maze in plain text. You may wa

import matplotlib.pyplot as plt

def showPNG(grid):
def showPNG(grid, start=None, end=None, shortest_path=None):
"""Generate a simple image of the maze."""
plt.figure(figsize=(10, 5))
plt.imshow(grid, cmap=plt.cm.binary, interpolation='nearest')
plt.xticks([]), plt.yticks([])
# plot start and end
if start is not None:
plt.plot(start[1], start[0], 'o', markersize=10, color='green')
if end is not None:
plt.plot(end[1], end[0], 'o', markersize=10, color='red')
# plot the shortest path
if shortest_path is not None:
plt.plot([p[1] for p in shortest_path], [p[0] for p in shortest_path], linewidth=3, color='cyan')
plt.show()


![Prims Example](images/prims_5x5_plain.png?raw=true)


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