graph.py 文件源码

def plot_ema(self, n, p, linestyle):
        temp = []
        for i in range(n):
            temp.append(i**p)
        mask = list(reversed([float(x)/sum(temp) for x in temp]))

        self.ema = np.convolve(self.signal[:,1], mask, mode='valid')
        print len(self.ema)
        print len(self.tstamps)
        self.plt.plot(self.tstamps[n-1:], self.ema, linestyle, linewidth=1.7)