def test_isowidths(self):
"""check ConstantPeakWidth properties bisowidth, uisowidth.
"""
from numpy import pi
cnpw = self.pwconst
dwpw = DebyeWallerPeakWidth()
bnds = self._genbonds(1, 2)
w0 = dwpw.calculate(bnds)
cnpw.uisowidth = self.tio2stru[[0, -1]].Uisoequiv.mean()
self.assertAlmostEqual(w0, cnpw.calculate(bnds), 12)
self.assertAlmostEqual(cnpw.bisowidth, 8 * pi**2 * cnpw.uisowidth, 12)
return
def setUp(self):
self.pwm = DebyeWallerPeakWidth()
return