import qplot as qp
import numpy as np
qp.figure('ticklen', 3, 3)
qp.ticklen(3)
qp.xaxis('Positive', np.arange(6), y=1)
qp.ticklen(-3)
qp.xaxis('Negative', np.arange(6), y=0)
qp.ticklen(10)
qp.xaxis('Big', np.arange(6), y=-1)
qp.ylim(-2, 2)