def test_linearInterpolation(self):
y = utils.linearInterpolation(1.0, 2.0, 3.0, 4.0, targetX=20.0)
x = utils.linearInterpolation(1.0, 2.0, 3.0, 4.0, targetY=y)
x2 = utils.linearInterpolation(1.0, 1.0, 2.0, 2.0, targetY=50)
self.assertEqual(x, 20.0)
self.assertEqual(x2, 50.0)
def test_linearInterpolation(self):
y = utils.linearInterpolation(1.0, 2.0, 3.0, 4.0, targetX=20.0)
x = utils.linearInterpolation(1.0, 2.0, 3.0, 4.0, targetY=y)
x2 = utils.linearInterpolation(1.0, 1.0, 2.0, 2.0, targetY=50)
self.assertEqual(x, 20.0)
self.assertEqual(x2, 50.0)
with self.assertRaises(ZeroDivisionError):
error = utils.linearInterpolation(1.0, 1.0, 1.0, 2.0)
def volumetricExpansion(self, Tk=None, Tc=None):
r"""P. Espeau, R. Ceolin "density of molten sulfur in the 334-508K range"
This is just a two-point interpolation."""
Tk = getTk(Tc, Tk)
self.checkTempRange(334, 430, Tk, "volumetric expansion")
return utils.linearInterpolation(
x0=334, y0=5.28e-4, x1=430, y1=5.56e-4, targetX=Tk
)