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# -*- coding: utf-8 -*- 

""" 

The obspy.imaging.beachball test suite. 

""" 

 

from obspy.core.util.decorator import skipIf 

from obspy.imaging.beachball import Beachball, AuxPlane, StrikeDip, TDL, \ 

    MomentTensor, MT2Plane, MT2Axes, Beach 

import matplotlib.pyplot as plt 

import os 

import unittest 

 

 

class BeachballTestCase(unittest.TestCase): 

    """ 

    Test cases for beachball generation. 

    """ 

    def setUp(self): 

        # directory where the test files are located 

        self.path = os.path.join(os.path.dirname(__file__), 'output') 

 

    @skipIf(__name__ != '__main__', 'test must be started manually') 

    def test_Beachball(self): 

        """ 

        Create beachball examples in tests/output directory. 

        """ 

        # http://en.wikipedia.org/wiki/File:USGS_sumatra_mts.gif 

        mt = [0.91, -0.89, -0.02, 1.78, -1.55, 0.47] 

        Beachball(mt, outfile=os.path.join(self.path, 'bb_sumatra_mt.png')) 

        np1 = [274, 13, 55] 

        Beachball(np1, outfile=os.path.join(self.path, 'bb_sumatra_np1.png')) 

        np2 = [130, 79, 98] 

        Beachball(np2, outfile=os.path.join(self.path, 'bb_sumatra_np2.png')) 

        # 

        np1 = [264.98, 45.00, -159.99] 

        Beachball(np1, outfile=os.path.join(self.path, 'bb_19950128_np1.png')) 

        np2 = [160.55, 76.00, -46.78] 

        Beachball(np2, outfile=os.path.join(self.path, 'bb_19950128_np2.png')) 

        # 

        mt = [1.45, -6.60, 5.14, -2.67, -3.16, 1.36] 

        Beachball(mt, outfile=os.path.join(self.path, 'bb_20090102_mt.png')) 

        np1 = [235, 80, 35] 

        Beachball(np1, outfile=os.path.join(self.path, 'bb_20090102_np1.png')) 

        np2 = [138, 56, 168] 

        Beachball(np2, outfile=os.path.join(self.path, 'bb-20090102-np2.png')) 

        # Explosion 

        mt = [1, 1, 1, 0, 0, 0] 

        Beachball(mt, outfile=os.path.join(self.path, 'bb_explosion.png')) 

        # Implosion 

        mt = [-1, -1, -1, 0, 0, 0] 

        Beachball(mt, outfile=os.path.join(self.path, 'bb_implosion.png')) 

        # CLVD - Compensate Linear Vector Dipole 

        mt = [1, -2, 1, 0, 0, 0] 

        Beachball(mt, outfile=os.path.join(self.path, 'bb_clvd.png')) 

        # Double Couple 

        mt = [1, -1, 0, 0, 0, 0] 

        Beachball(mt, outfile=os.path.join(self.path, 'bb_double_couple.png')) 

        # Lars 

        mt = [1, -1, 0, 0, 0, -1] 

        Beachball(mt, outfile=os.path.join(self.path, 'bb_lars.png')) 

        # http://wwweic.eri.u-tokyo.ac.jp/yuji/Aki-nada/ 

        np1 = [179, 55, -78] 

        Beachball(np1, outfile=os.path.join(self.path, 'bb_geiyo_np1.png')) 

        # 

        np1 = [10, 42.5, 90] 

        Beachball(np1, outfile=os.path.join(self.path, 'bb_honshu_np1.png')) 

        np2 = [10, 42.5, 92] 

        Beachball(np2, outfile=os.path.join(self.path, 'bb_honshu_np2.png')) 

        # http://wwweic.eri.u-tokyo.ac.jp/yuji/tottori/ 

        np1 = [150, 87, 1] 

        Beachball(np1, outfile=os.path.join(self.path, 'bb_tottori_np1.png')) 

        # http://iisee.kenken.go.jp/staff/thara/2004/09/20040905_1/2nd.html 

        mt = [0.99, -2.00, 1.01, 0.92, 0.48, 0.15] 

        Beachball(mt, outfile=os.path.join(self.path, 'bb_20040905_1_mt.png')) 

        # http://iisee.kenken.go.jp/staff/thara/2004/09/20040905_0/1st.html 

        mt = [5.24, -6.77, 1.53, 0.81, 1.49, -0.05] 

        Beachball(mt, outfile=os.path.join(self.path, 'bb_20040905_0_mt.png')) 

        # http://iisee.kenken.go.jp/staff/thara/miyagi.htm 

        mt = [16.578, -7.987, -8.592, -5.515, -29.732, 7.517] 

        Beachball(mt, outfile=os.path.join(self.path, 'bb_miyagi_mt.png')) 

        # http://iisee.kenken.go.jp/staff/thara/20050613/chile.html 

        mt = [-2.39, 1.04, 1.35, 0.57, -2.94, -0.94] 

        Beachball(mt, outfile=os.path.join(self.path, 'bb_chile_mt.png')) 

 

    @skipIf(__name__ != '__main__', 'test must be started manually') 

    def test_BeachBallOutputFormats(self): 

        """ 

        Tests various output formats. 

        """ 

        fm = [115, 35, 50] 

        # PDF 

        data = Beachball(fm, format='pdf') 

        self.assertEquals(data[0:4], "%PDF") 

        # as file 

        Beachball(fm, format='pdf', outfile=os.path.join(self.path, 'bb.pdf')) 

        # PS 

        data = Beachball(fm, format='ps') 

        self.assertEquals(data[0:4], "%!PS") 

        # as file 

        Beachball(fm, format='ps', outfile=os.path.join(self.path, 'bb.ps')) 

        # PNG 

        data = Beachball(fm, format='png') 

        self.assertEquals(data[1:4], "PNG") 

        # as file 

        Beachball(fm, format='png', outfile=os.path.join(self.path, 'bb.png')) 

        # SVG 

        data = Beachball(fm, format='svg') 

        self.assertEquals(data[0:5], "<?xml") 

        # as file 

        Beachball(fm, format='svg', outfile=os.path.join(self.path, 'bb.svg')) 

 

    def test_StrikeDip(self): 

        """ 

        Test StrikeDip function - all values are taken from MatLab. 

        """ 

        sl1 = -0.048901208623019 

        sl2 = 0.178067035725425 

        sl3 = 0.982802524713469 

        (strike, dip) = StrikeDip(sl2, sl1, sl3) 

        self.assertAlmostEqual(strike, 254.64386091007400) 

        self.assertAlmostEqual(dip, 10.641291652406172) 

 

    def test_AuxPlane(self): 

        """ 

        Test AuxPlane function - all values are taken from MatLab. 

        """ 

        # http://en.wikipedia.org/wiki/File:USGS_sumatra_mts.gif 

        s1 = 132.18005257215460 

        d1 = 84.240987194376590 

        r1 = 98.963372641038790 

        (s2, d2, r2) = AuxPlane(s1, d1, r1) 

        self.assertAlmostEqual(s2, 254.64386091007400) 

        self.assertAlmostEqual(d2, 10.641291652406172) 

        self.assertAlmostEqual(r2, 32.915578422454380) 

        # 

        s1 = 160.55 

        d1 = 76.00 

        r1 = -46.78 

        (s2, d2, r2) = AuxPlane(s1, d1, r1) 

        self.assertAlmostEqual(s2, 264.98676854650216) 

        self.assertAlmostEqual(d2, 45.001906942415623) 

        self.assertAlmostEqual(r2, -159.99404307049076) 

 

    def test_TDL(self): 

        """ 

        Test TDL function - all values are taken from MatLab. 

        """ 

        AN = [0.737298200871146, -0.668073596186761, -0.100344571703004] 

        BN = [-0.178067035261159, -0.048901208638715, -0.982802524796805] 

        (FT, FD, FL) = TDL(AN, BN) 

        self.assertAlmostEqual(FT, 227.81994742784540) 

        self.assertAlmostEqual(FD, 84.240987194376590) 

        self.assertAlmostEqual(FL, 81.036627358961210) 

 

    def test_MT2Plane(self): 

        """ 

        Tests MT2Plane. 

        """ 

        mt = MomentTensor((0.91, -0.89, -0.02, 1.78, -1.55, 0.47), 0) 

        np = MT2Plane(mt) 

        self.assertAlmostEqual(np.strike, 129.86262672080011) 

        self.assertAlmostEqual(np.dip, 79.022700906654734) 

        self.assertAlmostEqual(np.rake, 97.769255185515192) 

 

    def test_MT2Axes(self): 

        """ 

        Tests MT2Axes. 

        """ 

        # http://en.wikipedia.org/wiki/File:USGS_sumatra_mts.gif 

        mt = MomentTensor((0.91, -0.89, -0.02, 1.78, -1.55, 0.47), 0) 

        (T, N, P) = MT2Axes(mt) 

        self.assertAlmostEqual(T.val, 2.52461359) 

        self.assertAlmostEqual(T.dip, 55.33018576) 

        self.assertAlmostEqual(T.strike, 49.53656116) 

        self.assertAlmostEqual(N.val, 0.08745048) 

        self.assertAlmostEqual(N.dip, 7.62624529) 

        self.assertAlmostEqual(N.strike, 308.37440488) 

        self.assertAlmostEqual(P.val, -2.61206406) 

        self.assertAlmostEqual(P.dip, 33.5833323) 

        self.assertAlmostEqual(P.strike, 213.273886) 

 

    @skipIf(__name__ != '__main__', 'test must be started manually') 

    def test_Beach(self): 

        """ 

        Tests to plot beachballs as collection into an existing axis 

        object. The moment tensor values are taken form the 

        test_Beachball unit test. See that test for more information about 

        the parameters. 

        """ 

        mt = [[0.91, -0.89, -0.02, 1.78, -1.55, 0.47], 

              [274, 13, 55], 

              [130, 79, 98], 

              [264.98, 45.00, -159.99], 

              [160.55, 76.00, -46.78], 

              [1.45, -6.60, 5.14, -2.67, -3.16, 1.36], 

              [235, 80, 35], 

              [138, 56, 168], 

              [1, 1, 1, 0, 0, 0], 

              [-1, -1, -1, 0, 0, 0], 

              [1, -2, 1, 0, 0, 0], 

              [1, -1, 0, 0, 0, 0], 

              [1, -1, 0, 0, 0, -1], 

              [179, 55, -78], 

              [10, 42.5, 90], 

              [10, 42.5, 92], 

              [150, 87, 1], 

              [0.99, -2.00, 1.01, 0.92, 0.48, 0.15], 

              [5.24, -6.77, 1.53, 0.81, 1.49, -0.05], 

              [16.578, -7.987, -8.592, -5.515, -29.732, 7.517], 

              [-2.39, 1.04, 1.35, 0.57, -2.94, -0.94], 

              [150, 87, 1]] 

 

        # Initialize figure 

        fig = plt.figure(1, figsize=(6, 6), dpi=300) 

        ax = fig.add_subplot(111, aspect='equal') 

 

        # Plot the stations or borders 

        ax.plot([-100, -100, 100, 100], [-100, 100, -100, 100], 'rv') 

 

        x = -100 

        y = -100 

        for i, t in enumerate(mt): 

            # add the beachball (a collection of two patches) to the axis 

            ax.add_collection(Beach(t, width=30, xy=(x, y), linewidth=.6)) 

            x += 50 

            if (i + 1) % 5 == 0: 

                x = -100 

                y += 50 

 

        # Set the x and y limits and save the output 

        ax.axis([-120, 120, -120, 120]) 

        fig.savefig(os.path.join(self.path, 'bb_collection.png')) 

 

 

def suite(): 

    return unittest.makeSuite(BeachballTestCase, 'test') 

 

 

if __name__ == '__main__': 

    unittest.main(defaultTest='suite')