elphyio.py 文件源码

def get_signal_data(self, ep, ch):
        """
        Return a numpy array containing all samples of a
        signal, acquired on an Elphy analog channel, formatted
        as a list of (time, value) tuples.
        """
        #get data from the file
        y_data = self.load_encoded_data(ep, ch)
        x_data = np.arange(0, len(y_data))

        #create a recarray
        data = np.recarray(len(y_data), dtype=[('x', b_float), ('y', b_float)])

        #put in the recarray the scaled data
        x_factors = self.x_scale_factors(ep, ch)
        y_factors = self.y_scale_factors(ep, ch)
        data['x'] = x_factors.scale(x_data)
        data['y'] = y_factors.scale(y_data)

        return data