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from pylab import *



dt = 0.01

t = arange(dt, 20.0, dt)



subplot(211)

semilogx(t, sin(2*pi*t))

ylabel('semilog')

xticks([])

setp(gca(), 'xticklabels', [])

grid(True)



subplot(212)

loglog(t, 20*exp(-t/10.0), basey=4)

grid(True)

gca().xaxis.grid(True, which='minor')  # minor grid on too

xlabel('time (s)')

ylabel('loglog')

show()