本文整理匯總了Python中numpy.polynomial.legendre.legroots方法的典型用法代碼示例。如果您正苦於以下問題：Python legendre.legroots方法的具體用法？Python legendre.legroots怎麽用？Python legendre.legroots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.legroots方法的3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: _getNodes
# 需要導入模塊: from numpy.polynomial import legendre [as 別名]
# 或者: from numpy.polynomial.legendre import legroots [as 別名]
def _getNodes(self):
"""
Computes Gauss-Lobatto integration nodes.
Calculates the Gauss-Lobatto integration nodes via a root calculation of derivatives of the legendre
polynomials. Note that the precision of float 64 is not guarantied.
Copyright by Dieter Moser, 2014
Returns:
np.ndarray: array of Gauss-Lobatto nodes
"""
M = self.num_nodes
a = self.tleft
b = self.tright
roots = leg.legroots(leg.legder(np.array([0] * (M - 1) + [1], dtype=np.float64)))
nodes = np.array(np.append([-1.0], np.append(roots, [1.0])), dtype=np.float64)
nodes = (a * (1 - nodes) + b * (1 + nodes)) / 2
return nodes 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 legroots [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_legroots
# 需要導入模塊: from numpy.polynomial import legendre [as 別名]
# 或者: from numpy.polynomial.legendre import legroots [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))