43 lines
1.3 KiB
Python
43 lines
1.3 KiB
Python
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import numpy as np
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from matplotlib import pyplot as plt
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from matplotlib.figure import Figure
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from matplotlib.backends.backend_agg import FigureCanvas
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from sklearn.cluster import KMeans
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from sklearn.datasets.samples_generator import make_blobs
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import cv2
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cluster_std=1.30
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n_samples=300
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X, y=make_blobs(n_samples=n_samples, centers=5, cluster_std=cluster_std)
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fig, (ax1, ax2)=plt.subplots(1, 2)
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canvas=FigureCanvas(fig)
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fig.set_size_inches(11, 6)
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k=2
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while 1:
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ax1.cla()
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ax1.scatter(X[:,0], X[:,1], marker='+', c="#FF0000")
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kmeans=KMeans(n_clusters=k)
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pred_y=kmeans.fit_predict(X)
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ax2.cla()
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ax2.scatter(X[:,0], X[:,1], c=pred_y, marker='+')
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ax2.scatter(kmeans.cluster_centers_[:, 0], kmeans.cluster_centers_[:, 1], s=50, c='#0000FF')
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canvas.draw()
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img=np.array(canvas.renderer.buffer_rgba())
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cv2.putText(img, "Nbr cluster={:02d} [p|m] nbr clusters [r] reset [q] quit".format(k), (250, 50), cv2.FONT_HERSHEY_PLAIN, 1, (0, 0, 255), 2)
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cv2.imshow("plot", img)
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key=cv2.waitKey()&0xFF
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if key==ord('p'):
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k=min(99, k+1)
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if key==ord('m'):
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k=max(2, k-1)
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if key==ord('r'):
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X, y=make_blobs(n_samples=n_samples, centers=5, cluster_std=cluster_std)
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if key==ord('q'):
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quit()
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