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executable file 31 lines (25 sloc) 1.099 kB
# This code is part of the Biopython distribution and governed by its
# license. Please see the LICENSE file that should have been included
# as part of this package.
try:
from numpy import array
except ImportError:
from Bio import MissingExternalDependencyError
raise MissingExternalDependencyError(\
"Install NumPy if you want to use Bio.Statistics.lowess.")
from Bio.Statistics.lowess import lowess
import unittest
class test_lowess(unittest.TestCase):
def test_Precomputed(self):
x = array([0.0, 1.0, 2.0, 3.0, 5.0, 9.0, 11.0])
y = x**2
# Precalculated smooth output
ys = array([-2.96219015, 1.72680044, 6.58686813,
11.62986671, 28.18598762, 86.85271581, 116.83893423 ])
# Smooth output calculated by the lowess function
output = lowess(x, y, f=2./3., iter = 3)
for precomputed, calculated in zip(ys, output):
self.assertAlmostEqual(precomputed, calculated, 4)
if __name__ == "__main__":
runner = unittest.TextTestRunner(verbosity = 2)
unittest.main(testRunner=runner)
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