Beispiel #1
0
def plot_recurrence_models(configs,
                           area,
                           slip,
                           msr,
                           rake,
                           shear_modulus=30.0,
                           disp_length_ratio=1.25E-5,
                           msr_sigma=0.,
                           filename=None,
                           filetype='png',
                           dpi=300):
    """
    Plots a set of recurrence models
    :param list configs:
        List of configuration dictionaries
    """
    plt.figure(figsize=DEFAULT_SIZE)
    for config in configs:
        model = RecurrenceBranch(area,
                                 slip,
                                 msr,
                                 rake,
                                 shear_modulus,
                                 disp_length_ratio,
                                 msr_sigma,
                                 weight=1.0)
        model.get_recurrence(config)
        occurrence = model.recurrence.occur_rates
        cumulative = np.array(
            [np.sum(occurrence[iloc:]) for iloc in range(0, len(occurrence))])
        if 'AndersonLuco' in config['Model_Name']:
            flt_label = config['Model_Name'] + ' - ' + config['Model_Type'] +\
                    ' Type'
        else:
            flt_label = config['Model_Name']
        flt_color = np.random.uniform(0.1, 1.0, 3)
        plt.semilogy(model.magnitudes,
                     cumulative,
                     '-',
                     label=flt_label,
                     color=flt_color,
                     linewidth=2.)
        plt.semilogy(model.magnitudes,
                     model.recurrence.occur_rates,
                     '--',
                     color=flt_color,
                     linewidth=2.)
    plt.xlabel('Magnitude', fontsize=14)
    plt.ylabel('Annual Rate', fontsize=14)
    plt.legend(bbox_to_anchor=(1.1, 1.0))
    _save_image(filename, filetype, dpi)
Beispiel #2
0
class TestRecurrenceBranch(unittest.TestCase):
    '''
    Test the :class: hmtk.faults.fault_models.RecurrenceBranch - the class
    to control the recurrence calculation for a given model
    '''

    def setUp(self):
        '''
        '''
        self.msr = WC1994
        self.model = None
        self.mfd_config = None

    def test_simple_instantiation(self):
        '''
        Basic instantiation test
        '''
        # Area = 1200 km ^ 2, slip = 12 mm/yr, Rake = -90, Shear Mod =30. GPa
        self.model = RecurrenceBranch(1200., 12., self.msr, -90., 30.)
        expected_dict = {'area': 1200.0,
                         'branch_id': None,
                         'disp_length_ratio': None,
                         'magnitudes': None,
                         'max_mag': None,
                         'msr': WC1994,
                         'msr_sigma': 0.0,
                         'rake': -90.0,
                         'recurrence': None,
                         'shear_modulus': 30.0,
                         'slip': 12.0,
                         'weight': 1.0}
        self.assertDictEqual(self.model.__dict__, expected_dict)

    def test_update_weight(self):
        '''
        Tests the simple function to update the weight
        '''
        self.model = RecurrenceBranch(1200., 12., WC1994,  -90., 30.)
        self.model.update_weight(0.5)
        self.assertAlmostEqual(0.5, self.model.weight, 7)

    def test_get_recurrence_simple_characteristic(self):
        '''
        Tests the function to get the recurrence calculation for a simple
        characteristic earthquake
        '''
        self.mfd_config = {'MFD_spacing': 0.1,
                           'Model_Name': 'Characteristic',
                           'Model_Weight': 1.0,
                           'Maximum_Magnitude': None,
                           'Maximum_Uncertainty': None,
                           'Lower_Bound': -2.,
                           'Upper_Bound': 2., 'Sigma': 0.12}

        self.model = RecurrenceBranch(8500., 5., WC1994(), 0., 30.)
        self.model.get_recurrence(self.mfd_config)
        # Test the same process using just the hmtk.faults.mfd.characteristic
        # Implementation
        test_model = Characteristic()
        test_model.setUp(self.mfd_config)
        test_model.get_mmax(self.mfd_config, WC1994(), 0., 8500.)
        _ = test_model.get_mfd(5.0, 8500., 30.)
        self.assertTrue(isinstance(self.model.recurrence, IncrementalMFD))
        self.assertAlmostEqual(self.model.recurrence.min_mag,
                               test_model.mmin)
        self.assertAlmostEqual(self.model.recurrence.bin_width,
                               test_model.bin_width)
        np.testing.assert_array_almost_equal(self.model.recurrence.occur_rates,
                                             test_model.occurrence_rate)