Python numpy.polynomial.legendre.legroots() Examples

The following are code examples for showing how to use numpy.polynomial.legendre.legroots(). They are from open source Python projects. You can vote up the examples you like or vote down the ones you don't like.

Example 1
Project: LaserTOF   Author: kyleuckert   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 2
Project: psecas   Author: tberlok   File: legendre_extrema.py    BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up
def make_grid(self):
        import numpy as np
        from numpy.polynomial.legendre import legder, legroots, legval

        N = self._N
        self.NN = N + 1
        L = self.L

        factor = L / 2

        d1 = np.zeros((N + 1, N + 1))

        cp = legder([0] * N + [1])
        zg = np.hstack([-1.0, legroots(cp), 1.0])

        P_N = legval(zg, [0] * N + [1])

        with np.errstate(divide='ignore'):
            d1 = P_N[:, None] / (P_N[None, :] * (zg[:, None] - zg[None, :]))

        d1[np.diag_indices(N+1)] = 0.0
        d1[0, 0] = -N * (N + 1) / 4
        d1[N, N] = +N * (N + 1) / 4

        d2 = np.dot(d1, d1)

        self.zg = (zg + 1) * L / 2 + self.zmin
        self.d0 = np.eye(self.NN)
        self.d1 = d1 / factor
        self.d2 = d2 / factor ** 2

        # Call other objects that depend on the grid
        for callback in self._observers:
            callback() 
Example 3
Project: FX-RER-Value-Extraction   Author: tsKenneth   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 4
Project: recruit   Author: Frank-qlu   File: test_legendre.py    Apache License 2.0 5 votes vote down vote up
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)) 
Example 5
Project: att   Author: Centre-Alt-Rendiment-Esportiu   File: test_legendre.py    GNU General Public License v3.0 5 votes vote down vote up
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)) 
Example 6
Project: FUTU_Stop_Loss   Author: BigtoC   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 7
Project: MARRtino-2.0   Author: DaniAffCH   File: test_legendre.py    GNU General Public License v3.0 5 votes vote down vote up
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)) 
Example 8
Project: auto-alt-text-lambda-api   Author: abhisuri97   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 9
Project: vnpy_crypto   Author: birforce   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 10
Project: ble5-nrf52-mac   Author: tomasero   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 11
Project: Computable   Author: ktraunmueller   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 12
Project: poker   Author: surgebiswas   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 13
Project: P3_image_processing   Author: latedude2   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 14
Project: GraphicDesignPatternByPython   Author: Relph1119   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 15
Project: 3dprinteros-client   Author: panasevychol   File: test_legendre.py    GNU Affero General Public License v3.0 5 votes vote down vote up
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)) 
Example 16
Project: 3dprinteros-client   Author: panasevychol   File: test_legendre.py    GNU Affero General Public License v3.0 5 votes vote down vote up
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)) 
Example 17
Project: predictive-maintenance-using-machine-learning   Author: awslabs   File: test_legendre.py    Apache License 2.0 5 votes vote down vote up
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)) 
Example 18
Project: fund   Author: Frank-qlu   File: test_legendre.py    Apache License 2.0 5 votes vote down vote up
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)) 
Example 19
Project: pySINDy   Author: luckystarufo   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 20
Project: Programming-for-Non-Technical-Roles-   Author: PacktPublishing   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 21
Project: linear_neuron   Author: uglyboxer   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 22
Project: facethin   Author: ParkerGod   File: test_legendre.py    GNU General Public License v3.0 5 votes vote down vote up
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)) 
Example 23
Project: islam-buddy   Author: hamir   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 24
Project: mxnet-lambda   Author: awslabs   File: test_legendre.py    Apache License 2.0 5 votes vote down vote up
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)) 
Example 25
Project: Deribit_funding_rate_indicator   Author: Dimasik007   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 26
Project: psychrometric-chart-makeover   Author: buds-lab   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 27
Project: wine-ml-on-aws-lambda   Author: pierreant   File: test_legendre.py    Apache License 2.0 5 votes vote down vote up
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)) 
Example 28
Project: linux-cross-gcc   Author: nmercier   File: test_legendre.py    BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up
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)) 
Example 29
Project: SignLanguage_ML   Author: mareep-raljodid   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 30
Project: ImageFusion   Author: pfchai   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 31
Project: sarah   Author: ChonchoFronto   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 32
Project: honours_project   Author: JFriel   File: test_legendre.py    GNU General Public License v3.0 5 votes vote down vote up
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)) 
Example 33
Project: honours_project   Author: JFriel   File: test_legendre.py    GNU General Public License v3.0 5 votes vote down vote up
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)) 
Example 34
Project: Blackjack-Tracker   Author: martinabeleda   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 35
Project: PYPIC   Author: max614   File: test_legendre.py    BSD 2-Clause "Simplified" License 5 votes vote down vote up
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)) 
Example 36
Project: PYPIC   Author: max614   File: test_legendre.py    BSD 2-Clause "Simplified" License 5 votes vote down vote up
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)) 
Example 37
Project: PYPIC   Author: max614   File: test_legendre.py    BSD 2-Clause "Simplified" License 5 votes vote down vote up
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)) 
Example 38
Project: senior-design   Author: james-tate   File: test_legendre.py    GNU General Public License v2.0 5 votes vote down vote up
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)) 
Example 39
Project: offlow   Author: satwikkansal   File: test_legendre.py    GNU General Public License v3.0 5 votes vote down vote up
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)) 
Example 40
Project: lambda-tensorflow-object-detection   Author: mikylucky   File: test_legendre.py    GNU General Public License v3.0 5 votes vote down vote up
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)) 
Example 41
Project: elasticintel   Author: securityclippy   File: test_legendre.py    GNU General Public License v3.0 5 votes vote down vote up
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)) 
Example 42
Project: cnidaria   Author: sauloal   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 43
Project: AutoDraw   Author: yemi-Jump   File: test_legendre.py    MIT License 5 votes vote down vote up
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)) 
Example 44
Project: fund-rank-dashboard   Author: 1pani   File: test_legendre.py    Apache License 2.0 5 votes vote down vote up
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))