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format gen_webstats.py in ch01 #17

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Merged
wrichert merged 1 commit into from
May 1, 2016
Merged

format gen_webstats.py in ch01 #17

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22 changes: 9 additions & 13 deletions 22 ch01/gen_webstats.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,26 +17,22 @@

sp.random.seed(3) # to reproduce the data later on

x = sp.arange(1, 31 * 24)
y = sp.array(200 * (sp.sin(2 * sp.pi * x / (7 * 24))), dtype=int)
x = sp.arange(1, 31*24)
y = sp.array(200*(sp.sin(2*sp.pi*x/(7*24))), dtype=int)
y += gamma.rvs(15, loc=0, scale=100, size=len(x))
y += 2 * sp.exp(x / 100.0)
y = sp.ma.array(y, mask=[y < 0])
print(sum(y), sum(y < 0))
y += 2 * sp.exp(x/100.0)
y = sp.ma.array(y, mask=[y<0])
print(sum(y), sum(y<0))

plt.scatter(x, y)
plt.title("Web traffic over the last month")
plt.xlabel("Time")
plt.ylabel("Hits/hour")
plt.xticks([w * 7 * 24 for w in [0, 1, 2, 3, 4]], ['week %i' % (w + 1) for w in
[0, 1, 2, 3, 4]])

plt.xticks([w*7*24 for w in range(5)],
['week %i' %(w+1) for w in range(5)])
plt.autoscale(tight=True)
plt.grid()
plt.savefig(os.path.join(CHART_DIR, "1400_01_01.png"))

# sp.savetxt(os.path.join("..", "web_traffic.tsv"),
# zip(x[~y.mask],y[~y.mask]), delimiter="\t", fmt="%i")

sp.savetxt(os.path.join(
DATA_DIR, "web_traffic.tsv"), list(zip(x, y)), delimiter="\t", fmt="%s")
sp.savetxt(os.path.join(DATA_DIR, "web_traffic.tsv"),
list(zip(x, y)), delimiter="\t", fmt="%s")
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