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Python hermite_e.hermefit方法代码示例

本文整理汇总了Python中numpy.polynomial.hermite_e.hermefit方法的典型用法代码示例。如果您正苦于以下问题:Python hermite_e.hermefit方法的具体用法?Python hermite_e.hermefit怎么用?Python hermite_e.hermefit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numpy.polynomial.hermite_e的用法示例。


在下文中一共展示了hermite_e.hermefit方法的2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_hermefit

# 需要导入模块: from numpy.polynomial import hermite_e [as 别名]
# 或者: from numpy.polynomial.hermite_e import hermefit [as 别名]
def test_hermefit(self) :
        def f(x) :
            return x*(x - 1)*(x - 2)

        # Test exceptions
        assert_raises(ValueError, herme.hermefit, [1],    [1],     -1)
        assert_raises(TypeError,  herme.hermefit, [[1]],  [1],      0)
        assert_raises(TypeError,  herme.hermefit, [],     [1],      0)
        assert_raises(TypeError,  herme.hermefit, [1],    [[[1]]],  0)
        assert_raises(TypeError,  herme.hermefit, [1, 2], [1],      0)
        assert_raises(TypeError,  herme.hermefit, [1],    [1, 2],   0)
        assert_raises(TypeError,  herme.hermefit, [1],    [1],   0, w=[[1]])
        assert_raises(TypeError,  herme.hermefit, [1],    [1],   0, w=[1, 1])

        # Test fit
        x = np.linspace(0, 2)
        y = f(x)
        #
        coef3 = herme.hermefit(x, y, 3)
        assert_equal(len(coef3), 4)
        assert_almost_equal(herme.hermeval(x, coef3), y)
        #
        coef4 = herme.hermefit(x, y, 4)
        assert_equal(len(coef4), 5)
        assert_almost_equal(herme.hermeval(x, coef4), y)
        #
        coef2d = herme.hermefit(x, np.array([y, y]).T, 3)
        assert_almost_equal(coef2d, np.array([coef3, coef3]).T)
        # test weighting
        w = np.zeros_like(x)
        yw = y.copy()
        w[1::2] = 1
        y[0::2] = 0
        wcoef3 = herme.hermefit(x, yw, 3, w=w)
        assert_almost_equal(wcoef3, coef3)
        #
        wcoef2d = herme.hermefit(x, np.array([yw, yw]).T, 3, w=w)
        assert_almost_equal(wcoef2d, np.array([coef3, coef3]).T)
        # test scaling with complex values x points whose square
        # is zero when summed.
        x = [1, 1j, -1, -1j]
        assert_almost_equal(herme.hermefit(x, x, 1), [0, 1]) 
开发者ID:ktraunmueller,项目名称:Computable,代码行数:44,代码来源:test_hermite_e.py

示例2: test_hermefit

# 需要导入模块: from numpy.polynomial import hermite_e [as 别名]
# 或者: from numpy.polynomial.hermite_e import hermefit [as 别名]
def test_hermefit(self):
        def f(x):
            return x*(x - 1)*(x - 2)

        # Test exceptions
        assert_raises(ValueError, herme.hermefit, [1], [1], -1)
        assert_raises(TypeError, herme.hermefit, [[1]], [1], 0)
        assert_raises(TypeError, herme.hermefit, [], [1], 0)
        assert_raises(TypeError, herme.hermefit, [1], [[[1]]], 0)
        assert_raises(TypeError, herme.hermefit, [1, 2], [1], 0)
        assert_raises(TypeError, herme.hermefit, [1], [1, 2], 0)
        assert_raises(TypeError, herme.hermefit, [1], [1], 0, w=[[1]])
        assert_raises(TypeError, herme.hermefit, [1], [1], 0, w=[1, 1])

        # Test fit
        x = np.linspace(0, 2)
        y = f(x)
        #
        coef3 = herme.hermefit(x, y, 3)
        assert_equal(len(coef3), 4)
        assert_almost_equal(herme.hermeval(x, coef3), y)
        #
        coef4 = herme.hermefit(x, y, 4)
        assert_equal(len(coef4), 5)
        assert_almost_equal(herme.hermeval(x, coef4), y)
        #
        coef2d = herme.hermefit(x, np.array([y, y]).T, 3)
        assert_almost_equal(coef2d, np.array([coef3, coef3]).T)
        # test weighting
        w = np.zeros_like(x)
        yw = y.copy()
        w[1::2] = 1
        y[0::2] = 0
        wcoef3 = herme.hermefit(x, yw, 3, w=w)
        assert_almost_equal(wcoef3, coef3)
        #
        wcoef2d = herme.hermefit(x, np.array([yw, yw]).T, 3, w=w)
        assert_almost_equal(wcoef2d, np.array([coef3, coef3]).T)
        # test scaling with complex values x points whose square
        # is zero when summed.
        x = [1, 1j, -1, -1j]
        assert_almost_equal(herme.hermefit(x, x, 1), [0, 1]) 
开发者ID:pfchai,项目名称:ImageFusion,代码行数:44,代码来源:test_hermite_e.py


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