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"""Plot to test line collections"""
import matplotlib.pyplot as plt
import numpy as np
from matplotlib.collections import LineCollection
import mpld3
def create_plot():
t = np.linspace(0, 10, 100)
x = 0.1 * t * np.cos(np.pi * t)
y = 0.1 * t * np.sin(np.pi * t)
points = np.array([x, y]).T.reshape(100, 1, 2)
segments = np.hstack([points[:-1], points[1:]])
lc = LineCollection(segments, cmap=plt.cm.jet,
norm=plt.Normalize(0, 10),
array=t, linewidths=3)
fig, ax = plt.subplots()
ax.add_collection(lc)
plt.xlim(-1, 1)
plt.ylim(-1, 1)
ax.set_title("Line Collections", size=18)
ax.xaxis.set_major_formatter(plt.NullFormatter())
ax.yaxis.set_major_formatter(plt.NullFormatter())
return fig
def test_line_collections():
fig = create_plot()
html = mpld3.fig_to_html(fig)
plt.close(fig)
if __name__ == "__main__":
mpld3.show(create_plot())
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