本文整理匯總了Python中numpy.polynomial.legendre.legfromroots方法的典型用法代碼示例。如果您正苦於以下問題:Python legendre.legfromroots方法的具體用法?Python legendre.legfromroots怎麽用?Python legendre.legfromroots使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類numpy.polynomial.legendre
的用法示例。
在下文中一共展示了legendre.legfromroots方法的4個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: test_legfromroots
# 需要導入模塊: from numpy.polynomial import legendre [as 別名]
# 或者: from numpy.polynomial.legendre import legfromroots [as 別名]
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
# 需要導入模塊: from numpy.polynomial import legendre [as 別名]
# 或者: from numpy.polynomial.legendre import legfromroots [as 別名]
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
# 需要導入模塊: from numpy.polynomial import legendre [as 別名]
# 或者: from numpy.polynomial.legendre import legfromroots [as 別名]
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
# 需要導入模塊: from numpy.polynomial import legendre [as 別名]
# 或者: from numpy.polynomial.legendre import legfromroots [as 別名]
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))