本文整理汇总了Python中numpy.polynomial.legendre.legfromroots方法的典型用法代码示例。如果您正苦于以下问题：Python legendre.legfromroots方法的具体用法？Python legendre.legfromroots怎么用？Python legendre.legfromroots使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类numpy.polynomial.legendre的用法示例。
在下文中一共展示了legendre.legfromroots方法的4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: test_legfromroots
# 需要导入模块: from numpy.polynomial import legendre [as 别名]
# 或者: from numpy.polynomial.legendre import legfromroots [as 别名]
def test_legfromroots(self):
res = leg.legfromroots([])
assert_almost_equal(trim(res), [1])
for i in range(1, 5):
roots = np.cos(np.linspace(-np.pi, 0, 2*i + 1)[1::2])
pol = leg.legfromroots(roots)
res = leg.legval(roots, pol)
tgt = 0
assert_(len(pol) == i + 1)
assert_almost_equal(leg.leg2poly(pol)[-1], 1)
assert_almost_equal(res, tgt) 示例2: test_legroots
# 需要导入模块: from numpy.polynomial import legendre [as 别名]
# 或者: from numpy.polynomial.legendre import legfromroots [as 别名]
def test_legroots(self):
assert_almost_equal(leg.legroots([1]), [])
assert_almost_equal(leg.legroots([1, 2]), [-.5])
for i in range(2, 5):
tgt = np.linspace(-1, 1, i)
res = leg.legroots(leg.legfromroots(tgt))
assert_almost_equal(trim(res), trim(tgt)) 示例3: test_legfromroots
# 需要导入模块: from numpy.polynomial import legendre [as 别名]
# 或者: from numpy.polynomial.legendre import legfromroots [as 别名]
def test_legfromroots(self) :
res = leg.legfromroots([])
assert_almost_equal(trim(res), [1])
for i in range(1, 5) :
roots = np.cos(np.linspace(-np.pi, 0, 2*i + 1)[1::2])
pol = leg.legfromroots(roots)
res = leg.legval(roots, pol)
tgt = 0
assert_(len(pol) == i + 1)
assert_almost_equal(leg.leg2poly(pol)[-1], 1)
assert_almost_equal(res, tgt) 示例4: test_legroots
# 需要导入模块: from numpy.polynomial import legendre [as 别名]
# 或者: from numpy.polynomial.legendre import legfromroots [as 别名]
def test_legroots(self) :
assert_almost_equal(leg.legroots([1]), [])
assert_almost_equal(leg.legroots([1, 2]), [-.5])
for i in range(2, 5) :
tgt = np.linspace(-1, 1, i)
res = leg.legroots(leg.legfromroots(tgt))
assert_almost_equal(trim(res), trim(tgt))