本文整理汇总了Python中numpy.core.umath.arctan2函数的典型用法代码示例。如果您正苦于以下问题：Python arctan2函数的具体用法？Python arctan2怎么用？Python arctan2使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了arctan2函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: get_distance
def get_distance(locA, locB):
# use haversine forumla
print "ayyo"
earth_rad = 6371.0
dlat = deg2rad(locB[0] - locA[0])
dlon = deg2rad(locB[1] - locA[1])
a = sin(dlat / 2) * sin(dlat / 2) + \
cos(deg2rad(locA[0])) * cos(deg2rad(locB[0])) * \
sin(dlon / 2) * sin(dlon / 2)
c = 2 * arctan2(sqrt(a), sqrt(1 - a))
return earth_rad * c示例2: angle
def angle(z, deg=0):
"""Return the angle of the complex argument z.
"""
if deg:
fact = 180/pi
else:
fact = 1.0
z = asarray(z)
if (issubclass(z.dtype.type, _nx.complexfloating)):
zimag = z.imag
zreal = z.real
else:
zimag = 0
zreal = z
return arctan2(zimag, zreal) * fact示例3: test_zero_negative
def test_zero_negative(self):
# atan2(+-0, x) returns +-pi for x < 0.
assert_almost_equal(ncu.arctan2(np.PZERO, -1), np.pi)
assert_almost_equal(ncu.arctan2(np.NZERO, -1), -np.pi)示例4: test_zero_nzero
def test_zero_nzero(self):
# atan2(+-0, -0) returns +-pi.
assert_almost_equal(ncu.arctan2(np.PZERO, np.NZERO), np.pi)
assert_almost_equal(ncu.arctan2(np.NZERO, np.NZERO), -np.pi)示例5: test_one_one
def test_one_one(self):
# atan2(1, 1) returns pi/4.
assert_almost_equal(ncu.arctan2(1, 1), 0.25 * np.pi)
assert_almost_equal(ncu.arctan2(-1, 1), -0.25 * np.pi)
assert_almost_equal(ncu.arctan2(1, -1), 0.75 * np.pi)示例6: assert_arctan2_isnzero
def assert_arctan2_isnzero(x, y):
assert_(
(ncu.arctan2(x, y) == 0 and np.signbit(ncu.arctan2(x, y))),
"arctan(%s, %s) is %s, not -0" % (x, y, ncu.arctan2(x, y)),
)示例7: getAngleToNegativeXAxis
def getAngleToNegativeXAxis(self):
rad = arctan2( self[1], self[0]);
deg = (rad/pi)*180.0 + 180.0;
return deg示例8: test_inf_ninf
def test_inf_ninf(self):
# atan2(+-infinity, -infinity) returns +-3*pi/4.
assert_almost_equal(ncu.arctan2(np.inf, -np.inf), 0.75 * np.pi)
assert_almost_equal(ncu.arctan2(-np.inf, -np.inf), -0.75 * np.pi)示例9: test_any_ninf
def test_any_ninf(self):
# atan2(+-y, -infinity) returns +-pi for finite y > 0.
assert_almost_equal(ncu.arctan2(1, np.NINF), np.pi)
assert_almost_equal(ncu.arctan2(-1, np.NINF), -np.pi)示例10: assert_arctan2_ispzero
def assert_arctan2_ispzero(x, y):
assert (ncu.arctan2(x, y) == 0 and not np.signbit(ncu.arctan2(x, y))), "arctan(%s, %s) is %s, not +0" % (x, y, ncu.arctan2(x, y))示例11: assert_arctan2_isnzero
def assert_arctan2_isnzero(x, y):
assert ncu.arctan2(x, y) == 0 and np.signbit(ncu.arctan2(x, y))示例12: assert_arctan2_isninf
def assert_arctan2_isninf(x, y):
assert np.isinf(ncu.arctan2(x, y)) and ncu.arctan2(x, y) < 0示例13: assert_arctan2_isnan
def assert_arctan2_isnan(x, y):
assert np.isnan(ncu.arctan2(x, y))示例14: test_arctan2_special_values
def test_arctan2_special_values():
def assert_arctan2_isnan(x, y):
assert np.isnan(ncu.arctan2(x, y))
def assert_arctan2_ispinf(x, y):
assert np.isinf(ncu.arctan2(x, y)) and ncu.arctan2(x, y) > 0
def assert_arctan2_isninf(x, y):
assert np.isinf(ncu.arctan2(x, y)) and ncu.arctan2(x, y) < 0
def assert_arctan2_ispzero(x, y):
assert ncu.arctan2(x, y) == 0 and not np.signbit(ncu.arctan2(x, y))
def assert_arctan2_isnzero(x, y):
assert ncu.arctan2(x, y) == 0 and np.signbit(ncu.arctan2(x, y))
# atan2(1, 1) returns pi/4.
yield assert_almost_equal, ncu.arctan2(1, 1), 0.25 * np.pi
yield assert_almost_equal, ncu.arctan2(-1, 1), -0.25 * np.pi
yield assert_almost_equal, ncu.arctan2(1, -1), 0.75 * np.pi
# atan2(+-0, -0) returns +-pi.
yield assert_almost_equal, ncu.arctan2(np.PZERO, np.NZERO), np.pi
yield assert_almost_equal, ncu.arctan2(np.NZERO, np.NZERO), -np.pi
# atan2(+-0, +0) returns +-0.
yield assert_arctan2_ispzero, np.PZERO, np.PZERO
yield assert_arctan2_isnzero, np.NZERO, np.PZERO
# atan2(+-0, x) returns +-pi for x < 0.
yield assert_almost_equal, ncu.arctan2(np.PZERO, -1), np.pi
yield assert_almost_equal, ncu.arctan2(np.NZERO, -1), -np.pi
# atan2(+-0, x) returns +-0 for x > 0.
yield assert_arctan2_ispzero, np.PZERO, 1
yield assert_arctan2_isnzero, np.NZERO, 1
# atan2(y, +-0) returns +pi/2 for y > 0.
yield assert_almost_equal, ncu.arctan2(1, np.PZERO), 0.5 * np.pi
yield assert_almost_equal, ncu.arctan2(1, np.NZERO), 0.5 * np.pi
# atan2(y, +-0) returns -pi/2 for y < 0.
yield assert_almost_equal, ncu.arctan2(-1, np.PZERO), -0.5 * np.pi
yield assert_almost_equal, ncu.arctan2(-1, np.NZERO), -0.5 * np.pi
# atan2(+-y, -infinity) returns +-pi for finite y > 0.
yield assert_almost_equal, ncu.arctan2(1, np.NINF), np.pi
yield assert_almost_equal, ncu.arctan2(-1, np.NINF), -np.pi
# atan2(+-y, +infinity) returns +-0 for finite y > 0.
yield assert_arctan2_ispzero, 1, np.inf
yield assert_arctan2_isnzero, -1, np.inf
# atan2(+-infinity, x) returns +-pi/2 for finite x.
yield assert_almost_equal, ncu.arctan2( np.inf, 1), 0.5 * np.pi
yield assert_almost_equal, ncu.arctan2(-np.inf, 1), -0.5 * np.pi
# atan2(+-infinity, -infinity) returns +-3*pi/4.
yield assert_almost_equal, ncu.arctan2( np.inf, -np.inf), 0.75 * np.pi
yield assert_almost_equal, ncu.arctan2(-np.inf, -np.inf), -0.75 * np.pi
# atan2(+-infinity, +infinity) returns +-pi/4.
yield assert_almost_equal, ncu.arctan2( np.inf, np.inf), 0.25 * np.pi
yield assert_almost_equal, ncu.arctan2(-np.inf, np.inf), -0.25 * np.pi
# atan2(nan, x) returns nan for any x, including inf
yield assert_arctan2_isnan, np.nan, np.inf
yield assert_arctan2_isnan, np.inf, np.nan
yield assert_arctan2_isnan, np.nan, np.nan示例15: test_positive_zero
def test_positive_zero(self):
# atan2(y, +-0) returns +pi/2 for y > 0.
assert_almost_equal(ncu.arctan2(1, np.PZERO), 0.5 * np.pi)
assert_almost_equal(ncu.arctan2(1, np.NZERO), 0.5 * np.pi)