def test_chebval3d(self):
x1, x2, x3 = self.x
y1, y2, y3 = self.y
#test exceptions
assert_raises(ValueError, cheb.chebval3d, x1, x2, x3[:2], self.c3d)
#test values
tgt = y1*y2*y3
res = cheb.chebval3d(x1, x2, x3, self.c3d)
assert_almost_equal(res, tgt)
#test shape
z = np.ones((2,3))
res = cheb.chebval3d(z, z, z, self.c3d)
assert_(res.shape == (2,3))
def test_chebval3d(self):
x1, x2, x3 = self.x
y1, y2, y3 = self.y
#test exceptions
assert_raises(ValueError, cheb.chebval3d, x1, x2, x3[:2], self.c3d)
#test values
tgt = y1*y2*y3
res = cheb.chebval3d(x1, x2, x3, self.c3d)
assert_almost_equal(res, tgt)
#test shape
z = np.ones((2, 3))
res = cheb.chebval3d(z, z, z, self.c3d)
assert_(res.shape == (2, 3))
def cheb_eval(dim, coefs, coords):
if dim == 1:
return chebval(coords[0], coefs)
elif dim == 2:
return chebval2d(coords[0], coords[1], coefs)
elif dim == 3:
return chebval3d(coords[0], coords[1], coords[2], coefs)
else:
raise NotImplementedError('dimension %d not supported' % dim)
def chebReconstruct(orders, locations, coeffs, unusedNumPts):
if len(locations.shape) == 1:
return np.array(cheb.chebval(locations, coeffs))
else:
if locations.shape[1] == 2:
return cheb.chebval2d(locations[:, 0], locations[:, 1], coeffs)
elif locations.shape[1] == 3:
return cheb.chebval3d(locations[:, 0], locations[:, 1],
locations[:, 2], coeffs)
else:
return genericChebVal(locations, coeffs)
def test_chebvander3d(self) :
# also tests chebval3d for non-square coefficient array
x1, x2, x3 = self.x
c = np.random.random((2, 3, 4))
van = cheb.chebvander3d(x1, x2, x3, [1, 2, 3])
tgt = cheb.chebval3d(x1, x2, x3, c)
res = np.dot(van, c.flat)
assert_almost_equal(res, tgt)
# check shape
van = cheb.chebvander3d([x1], [x2], [x3], [1, 2, 3])
assert_(van.shape == (1, 5, 24))
def test_chebvander3d(self):
# also tests chebval3d for non-square coefficient array
x1, x2, x3 = self.x
c = np.random.random((2, 3, 4))
van = cheb.chebvander3d(x1, x2, x3, [1, 2, 3])
tgt = cheb.chebval3d(x1, x2, x3, c)
res = np.dot(van, c.flat)
assert_almost_equal(res, tgt)
# check shape
van = cheb.chebvander3d([x1], [x2], [x3], [1, 2, 3])
assert_(van.shape == (1, 5, 24))