这是简单的代码matplotlib。 (用于实时情节)(python 3.x)
在这个例子中,我如何应用峰值检测?
我想获得MAX峰值点指数和绘制点。实时
下面这样的图片
最初的实时情节图
我希望得到峰值点数
我怎么能?这是示例代码 但是peakutils方法中的错误。
http://matplotlib.org/examples/animation/animate_decay.html
import numpy as np import matplotlib.pyplot as plt import matplotlib.animation as animation import peakutils from peakutils.plot import plot as pplot def data_gen(t=0): cnt = 0 while cnt < 1000: cnt += 1 t += 0.1 yield t, np.sin(2*np.pi*t) * np.exp(-t/10.) def init(): ax.set_ylim(-1.1, 1.1) ax.set_xlim(0, 10) del xdata[:] del ydata[:] line.set_data(xdata, ydata) return line, fig, ax = plt.subplots() line, = ax.plot([], [], lw=2) ax.grid() xdata, ydata = [], [] def run(data): # update the data t, y = data xdata.append(t) ydata.append(y) indexes = peakutils.indexes(ydata, thres=0.5, min_dist=5) #error line print(indexes) xmin, xmax = ax.get_xlim() if t >= xmax: ax.set_xlim(xmin, 2*xmax) ax.figure.canvas.draw() line.set_data(xdata, ydata) return line, ani = animation.FuncAnimation(fig, run, data_gen, blit=False, interval=10, repeat=False, init_func=init) plt.show()