rel_x = pico_bpm6_new_x.read()

class XAxis(ReadableArray):
    def read(self):
        start = pico_bpm6_new.getTimestamp()
        #return to_array([x + start for x in rel_x], 'd')
        return [x + start for x in rel_x]

    def getSize(self):
        return len(rel_x)    #only reads if cache is None

x_axis = XAxis()



setup_plotting(line_plots = [pico_bpm6_new, x_axis])

tscan([pico_bpm6_new, x_axis], 10, 0.5)