#rel_x = pico_bpm6_new_x.read()
rel_x = pico_bpm6_ts_x.read()

class SensorXAxis(ReadableArray):
    def __init__(self, sensor):
        self.sensor = sensor
    def read(self):
        return [x + self.sensor.getTimestamp() for x in rel_x]
    def getSize(self):
        return len(rel_x)    #only reads if cache is None


x_axis = SensorXAxis(pico_bpm6_ts_sumall)

#plot(x_axis.read())
plot(x_axis)