52 lines
1.2 KiB
Python
52 lines
1.2 KiB
Python
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from numpy import asarray
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import pylab
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from shapely.geometry import Point, LineString, Polygon
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polygon = Polygon(((-1.0, -1.0), (-1.0, 1.0), (1.0, 1.0), (1.0, -1.0)))
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point_r = Point(-1.5, 1.2)
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point_g = Point(-1.0, 1.0)
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point_b = Point(-0.5, 0.5)
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line_r = LineString(((-0.5, 0.5), (0.5, 0.5)))
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line_g = LineString(((1.0, -1.0), (1.8, 0.5)))
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line_b = LineString(((-1.8, -1.2), (1.8, 0.5)))
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def plot_point(g, o, l):
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pylab.plot([g.x], [g.y], o, label=l)
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def plot_line(g, o):
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a = asarray(g)
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pylab.plot(a[:,0], a[:,1], o)
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def fill_polygon(g, o):
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a = asarray(g.exterior)
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pylab.fill(a[:,0], a[:,1], o, alpha=0.5)
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def fill_multipolygon(g, o):
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for g in g.geoms:
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fill_polygon(g, o)
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if __name__ == "__main__":
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from numpy import asarray
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import pylab
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fig = pylab.figure(1, figsize=(4, 3), dpi=150)
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#pylab.axis([-2.0, 2.0, -1.5, 1.5])
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pylab.axis('tight')
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a = asarray(polygon.exterior)
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pylab.fill(a[:,0], a[:,1], 'c')
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plot_point(point_r, 'ro', 'b')
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plot_point(point_g, 'go', 'c')
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plot_point(point_b, 'bo', 'd')
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plot_line(line_r, 'r')
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plot_line(line_g, 'g')
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plot_line(line_b, 'b')
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pylab.show()
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