def run(self, layers):
        """Risk plugin for Padang building survey
        """

        # Extract data
        H = get_hazard_layer(layers)    # Ground shaking
        E = get_exposure_layer(layers)  # Building locations

        question = get_question(H.get_name(),
                                E.get_name(),
                                self)

        # Map from different kinds of datasets to Padang vulnerability classes
        datatype = E.get_keywords()['datatype']
        vclass_tag = 'VCLASS'
        if datatype.lower() == 'osm':
            # Map from OSM attributes
            Emap = osm2padang(E)
        elif datatype.lower() == 'sigab':
            # Map from SIGAB attributes
            Emap = sigab2padang(E)
        else:
            Emap = E

        # Interpolate hazard level to building locations
        I = H.interpolate(Emap, attribute_name='MMI')

        # Extract relevant numerical data
        attributes = I.get_data()
        N = len(I)

        # Calculate building damage
        count_high = count_medium = count_low = count_none = 0
        for i in range(N):
            mmi = float(attributes[i]['MMI'])

            building_type = Emap.get_data(vclass_tag, i)
            damage_params = damage_curves[building_type]
            beta = damage_params['beta']
            median = damage_params['median']
            percent_damage = lognormal_cdf(mmi,
                                           median=median,
                                           sigma=beta) * 100

            # Add calculated impact to existing attributes
            attributes[i][self.target_field] = percent_damage

            # Calculate statistics
            if percent_damage < 10:
                count_none += 1

            if 10 <= percent_damage < 33:
                count_low += 1

            if 33 <= percent_damage < 66:
                count_medium += 1

            if 66 <= percent_damage:
                count_high += 1

        # Generate impact report
        table_body = [question,
                      TableRow([_('Buildings'), _('Total')],
                               header=True),
                      TableRow([_('All'), N]),
                      TableRow([_('No damage'), count_none]),
                      TableRow([_('Low damage'), count_low]),
                      TableRow([_('Medium damage'), count_medium]),
                      TableRow([_('High damage'), count_high])]

        table_body.append(TableRow(_('Notes:'), header=True))
        table_body.append(_('Levels of impact are defined by post 2009 '
                            'Padang earthquake survey conducted by Geoscience '
                            'Australia and Institute of Teknologi Bandung.'))
        table_body.append(_('Unreinforced masonry is assumed where no '
                            'structural information is available.'))

        impact_summary = Table(table_body).toNewlineFreeString()
        impact_table = impact_summary
        map_title = _('Earthquake damage to buildings')

        # Create style
        style_classes = [dict(label=_('No damage'), min=0, max=10,
                              colour='#00ff00', transparency=1),
                         dict(label=_('Low damage'), min=10, max=33,
                              colour='#ffff00', transparency=1),
                         dict(label=_('Medium damage'), min=33, max=66,
                              colour='#ffaa00', transparency=1),
                         dict(label=_('High damage'), min=66, max=100,
                              colour='#ff0000', transparency=1)]
        style_info = dict(target_field=self.target_field,
                          style_classes=style_classes)

        # Create vector layer and return
        V = Vector(data=attributes,
                   projection=E.get_projection(),
                   geometry=E.get_geometry(),
                   name='Estimated pct damage',
                   keywords={'impact_summary': impact_summary,
                             'impact_table': impact_table,
                             'map_title': map_title},
                   style_info=style_info)
        return V
示例#2
0
    def run(self, layers):
        """Risk plugin for Padang building survey
        """

        # Extract data
        H = get_hazard_layer(layers)    # Ground shaking
        E = get_exposure_layer(layers)  # Building locations

        datatype = E.get_keywords()['datatype']
        vclass_tag = 'VCLASS'
        if datatype.lower() == 'osm':
            # Map from OSM attributes to the padang building classes
            Emap = osm2padang(E)
        elif datatype.lower() == 'sigab':
            Emap = sigab2padang(E)
        elif datatype.lower() == 'padang':
            Emap = padang2itb(E)
        else:
            Emap = E

        # Interpolate hazard level to building locations
        Hi = H.interpolate(Emap, attribute_name='MMI')

        # Extract relevant numerical data
        coordinates = Emap.get_geometry()
        shaking = Hi.get_data()
        N = len(shaking)

        # List attributes to carry forward to result layer
        attributes = Emap.get_attribute_names()

        # Calculate building damage
        count50 = 0
        count25 = 0
        count10 = 0
        count0 = 0
        building_damage = []
        for i in range(N):
            mmi = float(shaking[i]['MMI'])

            building_class = Emap.get_data(vclass_tag, i)

            building_type = str(int(building_class))
            damage_params = damage_curves[building_type]
            beta = damage_params['beta']
            median = damage_params['median']
            percent_damage = lognormal_cdf(mmi,
                                           median=median,
                                           sigma=beta) * 100

            # Collect shake level and calculated damage
            result_dict = {self.target_field: percent_damage,
                           'MMI': mmi}

            # Carry all orginal attributes forward
            for key in attributes:
                result_dict[key] = Emap.get_data(key, i)

            # Record result for this feature
            building_damage.append(result_dict)

            # Debugging
            #if percent_damage > 0.01:
            #    print mmi, percent_damage

            # Calculate statistics
            if percent_damage < 10:
                count0 += 1

            if 10 <= percent_damage < 33:
                count10 += 1

            if 33 <= percent_damage < 66:
                count25 += 1

            if 66 <= percent_damage:
                count50 += 1

        # Create report
        Hname = H.get_name()
        Ename = E.get_name()
        impact_summary = ('<b>In case of "%s" the estimated impact to '
                           '"%s" '
                           'is&#58;</b><br><br><p>' % (Hname, Ename))
        impact_summary += ('<table border="0" width="320px">'
                   '   <tr><th><b>%s</b></th><th><b>%s</b></th></th>'
                    '   <tr></tr>'
                    '   <tr><td>%s&#58;</td><td>%i</td></tr>'
                    '   <tr><td>%s (<10%%)&#58;</td><td>%i</td></tr>'
                    '   <tr><td>%s (10-33%%)&#58;</td><td>%i</td></tr>'
                    '   <tr><td>%s (33-66%%)&#58;</td><td>%i</td></tr>'
                    '   <tr><td>%s (66-100%%)&#58;</td><td>%i</td></tr>'
                    '</table></font>' % (_('Buildings'), _('Total'),
                                  _('All'), N,
                                  _('No damage'), count0,
                                  _('Low damage'), count10,
                                  _('Medium damage'), count25,
                                  _('High damage'), count50))
        impact_summary += '<br>'  # Blank separation row
        impact_summary += '<b>' + _('Assumption') + '&#58;</b><br>'
        # This is the proper text:
        #_('Levels of impact are defined by post 2009 '
        #  'Padang earthquake survey conducted by Geoscience '
        #  'Australia and Institute of Teknologi Bandung.'))
        #_('Unreinforced masonry is assumed where no '
        #  'structural information is available.'))
        impact_summary += _('Levels of impact are defined by post 2009 '
                            'Padang earthquake survey conducted by Geoscience '
                            'Australia and Institute of Teknologi Bandung.')
        impact_summary += _('Unreinforced masonry is assumed where no '
                            'structural information is available.')
        # Create style
        style_classes = [dict(label=_('No damage'), min=0, max=10,
                              colour='#00ff00', transparency=1),
                         dict(label=_('Low damage'), min=10, max=33,
                              colour='#ffff00', transparency=1),
                         dict(label=_('Medium damage'), min=33, max=66,
                              colour='#ffaa00', transparency=1),
                         dict(label=_('High damage'), min=66, max=100,
                              colour='#ff0000', transparency=1)]
        style_info = dict(target_field=self.target_field,
                          style_classes=style_classes)

        # Create vector layer and return
        V = Vector(data=building_damage,
                   projection=E.get_projection(),
                   geometry=coordinates,
                   name='Estimated pct damage',
                   keywords={'impact_summary': impact_summary},
                   style_info=style_info)
        return V