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import openturns as ot
from matplotlib import pyplot as plt
from openturns.viewer import View
ot.RandomGenerator.SetSeed(0)
R = ot.CorrelationMatrix(2)
for i in range(1, 2):
R[i, i - 1] = -0.25
distribution = ot.Normal([-1.5, 0.5], [4.0, 1.0], R)
sample = distribution.getSample(200)
# Create an empty graph
graph = ot.Graph("Cloud example", "x1", "x2", True, "")
# Create the cloud
cloud = ot.Cloud(sample, "blue", "fsquare", "")
# Then, draw it
graph.add(cloud)
fig = plt.figure(figsize=(4, 4))
axis = fig.add_subplot(111)
axis.set_xlim(auto=True)
View(graph, figure=fig, axes=[axis], add_legend=False)
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