本文整理汇总了Python中numpy.polynomial.polynomial.polyfromroots方法的典型用法代码示例。如果您正苦于以下问题：Python polynomial.polyfromroots方法的具体用法？Python polynomial.polyfromroots怎么用？Python polynomial.polyfromroots使用的例子？那么恭喜您, 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.polynomial的用法示例。
在下文中一共展示了polynomial.polyfromroots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_polyfromroots
# 需要导入模块: from numpy.polynomial import polynomial [as 别名]
# 或者: from numpy.polynomial.polynomial import polyfromroots [as 别名]
def test_polyfromroots(self):
res = poly.polyfromroots([])
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])
tgt = Tlist[i]
res = poly.polyfromroots(roots)*2**(i-1)
assert_almost_equal(trim(res), trim(tgt)) 示例2: test_polyroots
# 需要导入模块: from numpy.polynomial import polynomial [as 别名]
# 或者: from numpy.polynomial.polynomial import polyfromroots [as 别名]
def test_polyroots(self):
assert_almost_equal(poly.polyroots([1]), [])
assert_almost_equal(poly.polyroots([1, 2]), [-.5])
for i in range(2, 5):
tgt = np.linspace(-1, 1, i)
res = poly.polyroots(poly.polyfromroots(tgt))
assert_almost_equal(trim(res), trim(tgt)) 示例3: test_polyfromroots
# 需要导入模块: from numpy.polynomial import polynomial [as 别名]
# 或者: from numpy.polynomial.polynomial import polyfromroots [as 别名]
def test_polyfromroots(self) :
res = poly.polyfromroots([])
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])
tgt = Tlist[i]
res = poly.polyfromroots(roots)*2**(i-1)
assert_almost_equal(trim(res), trim(tgt)) 示例4: test_polyroots
# 需要导入模块: from numpy.polynomial import polynomial [as 别名]
# 或者: from numpy.polynomial.polynomial import polyfromroots [as 别名]
def test_polyroots(self) :
assert_almost_equal(poly.polyroots([1]), [])
assert_almost_equal(poly.polyroots([1, 2]), [-.5])
for i in range(2, 5) :
tgt = np.linspace(-1, 1, i)
res = poly.polyroots(poly.polyfromroots(tgt))
assert_almost_equal(trim(res), trim(tgt))