pythonmatplotlibshapely

How do I plot Shapely polygons and objects using Matplotlib?

I want to use Shapely for my computational geometry project. I need to be able to visualize and display polygons, lines, and other geometric objects for this. I've tried to use Matplotlib for this but I am having trouble with it.

from shapely.geometry import Polygon
import matplotlib.pyplot as plt

polygon1 = Polygon([(0,5),
                    (1,1),
                    (3,0),
                    ])

plt.plot(polygon1)
plt.show()

I would like to be able to display this polygon in a plot. How would I change my code to do this?

Solution

  • Use: 

    import matplotlib.pyplot as plt

x,y = polygon1.exterior.xy
plt.plot(x,y)

    Or, more succinctly:

    plt.plot(*polygon1.exterior.xy)