from numpy import linspace,log2
from matplotlib.pyplot import *
from mpl_toolkits.axes_grid.axislines import SubplotZero

x = linspace(0,10,150)
y = log2(x)

fig = figure(figsize=(5,4))
ax = SubplotZero(fig,111)
fig.add_subplot(ax)
ax.grid(True)
for direction in ["xzero","left"]:
	ax.axis[direction].set_axisline_style("-|>")
	ax.axis[direction].set_visible(True)
for direction in ["right","bottom","top"]:
	ax.axis[direction].set_visible(False)
ax.plot(x,y,linewidth=2)
ax.plot([1,2,4,8],[0,1,2,3],'ko')
ax.text(10,-1,r"$x$")
ax.text(0.2,3.5,r"$y=\log_2(x)$")
ax.minorticks_on()
#fig.show()
fig.savefig("Binary_logarithm_plot_with_ticks.svg",bbox_inches="tight",\
	pad_inches=.15)