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####
##
## Compute the pearson correlation coefficient between the values of
## node properties included in the two files provided as input.
##
import sys
import numpy
import scipy.stats
import math
if len(sys.argv) < 3:
print "Usage %s <file1> <file2>" % sys.argv[0]
sys.exit(1)
x1 = []
with open(sys.argv[1], "r") as lines:
for l in lines:
elem = [float(x) if "." in x or "e" in x else int(x) for x in l.strip(" \n").split()][0]
x1.append(elem)
x2 = []
with open(sys.argv[2], "r") as lines:
for l in lines:
elem = [float(x) if "." in x or "e" in x else int(x) for x in l.strip(" \n").split()][0]
x2.append(elem)
r2 =numpy.corrcoef(x1,x2)
print r2[0][1]
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