def test_splprep_errors(self):
# test that both "old" and "new" code paths raise for x.ndim > 2
x = np.arange(3 * 4 * 5).reshape((3, 4, 5))
with assert_raises(ValueError, match="too many values to unpack"):
splprep(x)
with assert_raises(ValueError, match="too many values to unpack"):
_impl.splprep(x)
# input below minimum size
x = np.linspace(0, 40, num=3)
with assert_raises(TypeError, match="m > k must hold"):
splprep([x])
with assert_raises(TypeError, match="m > k must hold"):
_impl.splprep([x])
# automatically calculated parameters are non-increasing
# see gh-7589
x = [-50.49072266, -50.49072266, -54.49072266, -54.49072266]
with assert_raises(ValueError, match="Invalid inputs"):
splprep([x])
with assert_raises(ValueError, match="Invalid inputs"):
_impl.splprep([x])
# given non-increasing parameter values u
x = [1, 3, 2, 4]
u = [0, 0.3, 0.2, 1]
with assert_raises(ValueError, match="Invalid inputs"):
splprep(*[[x], None, u])
def test_splprep_errors(self):
# test that both "old" and "new" code paths raise for x.ndim > 2
x = np.arange(3*4*5).reshape((3, 4, 5))
with assert_raises(ValueError, message="too many values to unpack"):
splprep(x)
with assert_raises(ValueError, message="too many values to unpack"):
_impl.splprep(x)
# input below minimum size
x = np.linspace(0, 40, num=3)
with assert_raises(TypeError, message="m > k must hold"):
splprep([x])
with assert_raises(TypeError, message="m > k must hold"):
_impl.splprep([x])
# automatically calculated parameters are non-increasing
# see gh-7589
x = [-50.49072266, -50.49072266, -54.49072266, -54.49072266]
with assert_raises(ValueError, message="Invalid inputs"):
splprep([x])
with assert_raises(ValueError, message="Invalid inputs"):
_impl.splprep([x])
# given non-increasing parameter values u
x = [1, 3, 2, 4]
u = [0, 0.3, 0.2, 1]
with assert_raises(ValueError, message="Invalid inputs"):
splprep(*[[x], None, u])
def test_splprep(self):
x = np.arange(15).reshape((3, 5))
b, u = splprep(x)
tck, u1 = _impl.splprep(x)
# test the roundtrip with splev for both "old" and "new" output
assert_allclose(u, u1, atol=1e-15)
assert_allclose(splev(u, b), x, atol=1e-15)
assert_allclose(splev(u, tck), x, atol=1e-15)
# cover the ``full_output=True`` branch
(b_f, u_f), _, _, _ = splprep(x, s=0, full_output=True)
assert_allclose(u, u_f, atol=1e-15)
assert_allclose(splev(u_f, b_f), x, atol=1e-15)
def test_splprep(self):
x = np.arange(15).reshape((3, 5))
b, u = splprep(x)
tck, u1 = _impl.splprep(x)
# test the roundtrip with splev for both "old" and "new" output
assert_allclose(u, u1, atol=1e-15)
assert_allclose(splev(u, b), x, atol=1e-15)
assert_allclose(splev(u, tck), x, atol=1e-15)
# cover the ``full_output=True`` branch
(b_f, u_f), _, _, _ = splprep(x, s=0, full_output=True)
assert_allclose(u, u_f, atol=1e-15)
assert_allclose(splev(u_f, b_f), x, atol=1e-15)
def test_splprep(self):
x = np.arange(15).reshape((3, 5))
b, u = splprep(x)
tck, u1 = _impl.splprep(x)
# test the roundtrip with splev for both "old" and "new" output
assert_allclose(u, u1, atol=1e-15)
assert_allclose(splev(u, b), x, atol=1e-15)
assert_allclose(splev(u, tck), x, atol=1e-15)
# cover the ``full_output=True`` branch
(b_f, u_f), _, _, _ = splprep(x, s=0, full_output=True)
assert_allclose(u, u_f, atol=1e-15)
assert_allclose(splev(u_f, b_f), x, atol=1e-15)
# test that both "old" and "new" code paths raise for x.ndim > 2
x1 = np.arange(3 * 4 * 5).reshape((3, 4, 5))
assert_raises(ValueError, splprep, x1)
assert_raises(ValueError, _impl.splprep, x1)
def test_splprep(self):
x = np.arange(15).reshape((3, 5))
b, u = splprep(x)
tck, u1 = _impl.splprep(x)
# test the roundtrip with splev for both "old" and "new" output
assert_allclose(u, u1, atol=1e-15)
assert_allclose(splev(u, b), x, atol=1e-15)
assert_allclose(splev(u, tck), x, atol=1e-15)
# cover the ``full_output=True`` branch
(b_f, u_f), _, _, _ = splprep(x, s=0, full_output=True)
assert_allclose(u, u_f, atol=1e-15)
assert_allclose(splev(u_f, b_f), x, atol=1e-15)
# test that both "old" and "new" code paths raise for x.ndim > 2
x1 = np.arange(3*4*5).reshape((3, 4, 5))
assert_raises(ValueError, splprep, x1)
assert_raises(ValueError, _impl.splprep, x1)