def test_create_classes(self):
        """Test create_classes.
        """
        my_list = [0, 1, 4, 2, 9, 2, float('nan')]
        num_classes = 2
        my_expected = [4.5, 9]
        my_result = create_classes(my_list, num_classes)
        assert my_result == my_expected, ' %s is not same with %s' % (
            my_result, my_expected)

        my_list = [1, 4, 2, 9, 2, float('nan')]
        num_classes = 2
        my_expected = [1, 9]
        my_result = create_classes(my_list, num_classes)
        assert my_result == my_expected, ' %s is not same with %s' % (
            my_result, my_expected)

    def test_create_classes(self):
        """Test create_classes.
        """
        # Normal case
        class_list = numpy.array([0, 1, 4, 2, 9, 2, float('nan')])
        num_classes = 2
        expected_classes = [1.0, 9.0]
        result = create_classes(class_list, num_classes)
        message = '%s is not same with %s' % (result, expected_classes)
        self.assertEqual(result, expected_classes, message)

        # There's only 1 value
        class_list = numpy.array([6])
        num_classes = 3
        expected_classes = [2.0, 4.0, 6.0]
        result = create_classes(class_list, num_classes)
        message = '%s is not same with %s' % (result, expected_classes)
        self.assertEqual(result, expected_classes, message)

        # Max value <= 1.0
        class_list = numpy.array([0.1, 0.3, 0.9])
        num_classes = 3
        expected_classes = [0.3, 0.6, 0.9]
        result = create_classes(class_list, num_classes)
        message = '%s is not same with %s' % (result, expected_classes)
        self.assertEqual(result, expected_classes, message)

        # There are only 2 values
        class_list = numpy.array([2, 6])
        num_classes = 3
        expected_classes = [1.0, 3.5, 6.0]
        result = create_classes(class_list, num_classes)
        message = '%s is not same with %s' % (result, expected_classes)
        self.assertEqual(result, expected_classes, message)

        # Another 2 values
        class_list = numpy.array([2.5, 6])
        num_classes = 3
        expected_classes = [2.0, 4.0, 6.0]
        result = create_classes(class_list, num_classes)
        message = '%s is not same with %s' % (result, expected_classes)
        self.assertEqual(result, expected_classes, message)

#.........这里部分代码省略.........
                    col_span=2)]),
            TableRow([tr('Evacuation threshold'), '%s%%' % format_int(
                self.parameters['evacuation_percentage'])], header=True),
            TableRow(tr(
                'Map shows the number of people affected in each flood prone '
                'area')),
            TableRow(tr(
                'Table below shows the weekly minimum needs for all '
                'evacuated people'))]
        total_needs = evacuated_population_needs(
            evacuated, minimum_needs)
        for frequency, needs in total_needs.items():
            table_body.append(TableRow(
                [
                    tr('Needs should be provided %s' % frequency),
                    tr('Total')
                ],
                header=True))
            for resource in needs:
                table_body.append(TableRow([
                    tr(resource['table name']),
                    format_int(resource['amount'])]))

        impact_table = Table(table_body).toNewlineFreeString()

        table_body.append(TableRow(tr('Action Checklist:'), header=True))
        table_body.append(TableRow(tr('How will warnings be disseminated?')))
        table_body.append(TableRow(tr('How will we reach stranded people?')))
        table_body.append(TableRow(tr('Do we have enough relief items?')))
        table_body.append(TableRow(
            'If yes, where are they located and how will we distribute '
            'them?'))
        table_body.append(TableRow(
            'If no, where can we obtain additional relief items from and '
            'how will we transport them to here?'))

        # Extend impact report for on-screen display
        table_body.extend([
            TableRow(tr('Notes'), header=True),
            tr('Total population: %s') % format_int(total),
            tr('People need evacuation if in the area identified as '
               '"Flood Prone"'),
            tr('Minimum needs are defined in BNPB regulation 7/2008')])
        impact_summary = Table(table_body).toNewlineFreeString()

        # Create style
        # Define classes for legend for flooded population counts
        colours = ['#FFFFFF', '#38A800', '#79C900', '#CEED00',
                   '#FFCC00', '#FF6600', '#FF0000', '#7A0000']

        population_counts = [x['population'] for x in new_attributes]
        classes = create_classes(population_counts, len(colours))
        interval_classes = humanize_class(classes)

        # Define style info for output polygons showing population counts
        style_classes = []
        for i in xrange(len(colours)):
            style_class = dict()
            style_class['label'] = create_label(interval_classes[i])
            if i == 0:
                transparency = 0
                style_class['min'] = 0
            else:
                transparency = 0
                style_class['min'] = classes[i - 1]
            style_class['transparency'] = transparency
            style_class['colour'] = colours[i]
            style_class['max'] = classes[i]
            style_classes.append(style_class)

        # Override style info with new classes and name
        style_info = dict(target_field=self.target_field,
                          style_classes=style_classes,
                          style_type='graduatedSymbol')

        # For printing map purpose
        map_title = tr('People affected by flood prone areas')
        legend_notes = tr('Thousand separator is represented by \'.\'')
        legend_units = tr('(people per polygon)')
        legend_title = tr('Population Count')

        # Create vector layer and return
        vector_layer = Vector(
            data=new_attributes,
            projection=hazard_layer.get_projection(),
            geometry=hazard_layer.get_geometry(),
            name=tr('People affected by flood prone areas'),
            keywords={
                'impact_summary': impact_summary,
                'impact_table': impact_table,
                'target_field': self.target_field,
                'map_title': map_title,
                'legend_notes': legend_notes,
                'legend_units': legend_units,
                'legend_title': legend_title,
                'affected_population': affected_population,
                'total_population': total,
                'total_needs': total_needs},
            style_info=style_info)
        return vector_layer

    def run(self):
        """Run classified population evacuation Impact Function.

        Counts number of people exposed to each hazard zones.

        :returns: Map of population exposed to each hazard zone.
            The returned dict will include a table with number of people
            evacuated and supplies required.
        :rtype: dict

        :raises:
            * Exception - When hazard layer is not vector layer
        """
        self.validate()
        self.prepare()

        self.provenance.append_step("Calculating Step", "Impact function is calculating the impact.")

        # Value from layer's keywords
        self.hazard_class_attribute = self.hazard.keyword("field")
        self.hazard_class_mapping = self.hazard.keyword("value_map")
        # TODO: Remove check to self.validate (Ismail)
        # Input checks
        message = tr(
            "Input hazard must be a polygon layer. I got %s with layer type "
            "%s" % (self.hazard.name, self.hazard.layer.get_geometry_name())
        )
        if not self.hazard.layer.is_polygon_data:
            raise Exception(message)

        # Check if hazard_class_attribute exists in hazard_layer
        if self.hazard_class_attribute not in self.hazard.layer.get_attribute_names():
            message = (
                "Hazard data %s does not contain expected hazard "
                'zone attribute "%s". Please change it in the option. '
                % (self.hazard.name, self.hazard_class_attribute)
            )
            # noinspection PyExceptionInherit
            raise InaSAFEError(message)

        # Retrieve the classification that is used by the hazard layer.
        vector_hazard_classification = self.hazard.keyword("vector_hazard_classification")
        # Get the dictionary that contains the definition of the classification
        vector_hazard_classification = definition(vector_hazard_classification)
        # Get the list classes in the classification
        vector_hazard_classes = vector_hazard_classification["classes"]
        # Initialize OrderedDict of affected buildings
        self.affected_population = OrderedDict()
        # Iterate over vector hazard classes
        for vector_hazard_class in vector_hazard_classes:
            # Check if the key of class exist in hazard_class_mapping
            if vector_hazard_class["key"] in self.hazard_class_mapping.keys():
                # Replace the key with the name as we need to show the human
                # friendly name in the report.
                self.hazard_class_mapping[vector_hazard_class["name"]] = self.hazard_class_mapping.pop(
                    vector_hazard_class["key"]
                )
                # Adding the class name as a key in affected_building
                self.affected_population[vector_hazard_class["name"]] = 0

        # Interpolated layer represents grid cell that lies in the polygon
        interpolated_layer, covered_exposure_layer = assign_hazard_values_to_exposure_data(
            self.hazard.layer, self.exposure.layer, attribute_name=self.target_field
        )

        # Count total affected population per hazard zone
        for row in interpolated_layer.get_data():
            # Get population at this location
            population = row[self.target_field]
            if not numpy.isnan(population):
                population = float(population)
                # Update population count for this hazard zone
                hazard_value = get_key_for_value(row[self.hazard_class_attribute], self.hazard_class_mapping)
                if not hazard_value:
                    hazard_value = self._not_affected_value
                self.affected_population[hazard_value] += population

        # Count total population from exposure layer
        self.total_population = int(numpy.nansum(self.exposure.layer.get_data()))

        # Count total affected population
        total_affected_population = self.total_affected_population
        self.unaffected_population = self.total_population - total_affected_population

        self.minimum_needs = [
            parameter.serialize() for parameter in filter_needs_parameters(self.parameters["minimum needs"])
        ]

        # check for zero impact
        if total_affected_population == 0:
            message = no_population_impact_message(self.question)
            raise ZeroImpactException(message)

        impact_table = impact_summary = self.html_report()

        # Create style
        colours = ["#FFFFFF", "#38A800", "#79C900", "#CEED00", "#FFCC00", "#FF6600", "#FF0000", "#7A0000"]
        classes = create_classes(covered_exposure_layer.get_data().flat[:], len(colours))
        interval_classes = humanize_class(classes)
        # Define style info for output polygons showing population counts
#.........这里部分代码省略.........

    def run(self):
        """Plugin for impact of population as derived by classified hazard.

        Counts number of people exposed to each class of the hazard

        Return
          Map of population exposed to high class
          Table with number of people in each class
        """
        self.validate()
        self.prepare()

        # The 3 classes
        # TODO (3.2): shouldnt these be defined in keywords rather? TS
        categorical_hazards = self.parameters['Categorical hazards'].value
        low_class = categorical_hazards[0].value
        medium_class = categorical_hazards[1].value
        high_class = categorical_hazards[2].value

        # The classes must be different to each other
        unique_classes_flag = all(
            x != y for x, y in list(
                itertools.combinations(
                    [low_class, medium_class, high_class], 2)))
        if not unique_classes_flag:
            raise FunctionParametersError(
                'There is hazard class that has the same value with other '
                'class. Please check the parameters.')

        # Extract data as numeric arrays
        hazard_data = self.hazard.layer.get_data(nan=True)  # Class
        if has_no_data(hazard_data):
            self.no_data_warning = True

        # Calculate impact as population exposed to each class
        population = self.exposure.layer.get_data(scaling=True)

        # Get all population data that falls in each hazard class
        high_hazard_population = numpy.where(
            hazard_data == high_class, population, 0)
        medium_hazard_population = numpy.where(
            hazard_data == medium_class, population, 0)
        low_hazard_population = numpy.where(
            hazard_data == low_class, population, 0)
        affected_population = (
            high_hazard_population + medium_hazard_population +
            low_hazard_population)

        # Carry the no data values forward to the impact layer.
        affected_population = numpy.where(
            numpy.isnan(population),
            numpy.nan,
            affected_population)
        affected_population = numpy.where(
            numpy.isnan(hazard_data),
            numpy.nan,
            affected_population)

        # Count totals
        self.total_population = int(numpy.nansum(population))
        self.affected_population[
            tr('Population in High hazard class areas')] = int(
                numpy.nansum(high_hazard_population))
        self.affected_population[
            tr('Population in Medium hazard class areas')] = int(
                numpy.nansum(medium_hazard_population))
        self.affected_population[
            tr('Population in Low hazard class areas')] = int(
                numpy.nansum(low_hazard_population))
        self.unaffected_population = (
            self.total_population - self.total_affected_population)

        # check for zero impact
        if self.total_affected_population == 0:
            message = no_population_impact_message(self.question)
            raise ZeroImpactException(message)

        self.minimum_needs = [
            parameter.serialize() for parameter in
            self.parameters['minimum needs']
        ]

        total_needs = self.total_needs
        impact_table = impact_summary = self.html_report()

        # Create style
        colours = [
            '#FFFFFF', '#38A800', '#79C900', '#CEED00',
            '#FFCC00', '#FF6600', '#FF0000', '#7A0000']
        classes = create_classes(affected_population.flat[:], len(colours))
        interval_classes = humanize_class(classes)
        style_classes = []

        for i in xrange(len(colours)):
            style_class = dict()
            if i == 1:
                label = create_label(
                    interval_classes[i],
                    tr('Low Population [%i people/cell]' % classes[i]))
            elif i == 4:
#.........这里部分代码省略.........

#.........这里部分代码省略.........

                # Update building count for each category
                category = new_data_table[poly_id][category_title]
                categories[category] += 1

        # Count totals
        total = len(exposure_layer)

        # Generate simple impact report
        blank_cell = ''
        table_body = [question,
                      TableRow([tr('Volcanoes considered'),
                                '%s' % volcano_names, blank_cell],
                               header=True),
                      TableRow([tr('Distance [km]'), tr('Total'),
                                tr('Cumulative')],
                               header=True)]

        cumulative = 0
        for name in category_names:
            # prevent key error
            count = categories.get(name, 0)
            cumulative += count
            if is_point_data:
                name = int(name) / 1000
            table_body.append(TableRow([name, format_int(count),
                                        format_int(cumulative)]))

        table_body.append(TableRow(tr('Map shows buildings affected in '
                                      'each of volcano hazard polygons.')))
        impact_table = Table(table_body).toNewlineFreeString()

        # Extend impact report for on-screen display
        table_body.extend([TableRow(tr('Notes'), header=True),
                           tr('Total number of buildings %s in the viewable '
                              'area') % format_int(total),
                           tr('Only buildings available in OpenStreetMap '
                              'are considered.')])

        impact_summary = Table(table_body).toNewlineFreeString()
        building_counts = [x[self.target_field] for x in new_data_table]

        if max(building_counts) == 0 == min(building_counts):
            table_body = [
                question,
                TableRow([tr('Number of buildings affected'),
                          '%s' % format_int(cumulative), blank_cell],
                         header=True)]
            my_message = Table(table_body).toNewlineFreeString()
            raise ZeroImpactException(my_message)

        # Create style
        colours = ['#FFFFFF', '#38A800', '#79C900', '#CEED00',
                   '#FFCC00', '#FF6600', '#FF0000', '#7A0000']

        # Create Classes
        classes = create_classes(building_counts, len(colours))
        # Create Interval Classes
        interval_classes = humanize_class(classes)

        style_classes = []
        for i in xrange(len(colours)):
            style_class = dict()
            style_class['label'] = create_label(interval_classes[i])
            if i == 0:
                style_class['min'] = 0
            else:
                style_class['min'] = classes[i - 1]
            style_class['transparency'] = 30
            style_class['colour'] = colours[i]
            style_class['max'] = classes[i]
            style_classes.append(style_class)

        # Override style info with new classes and name
        style_info = dict(target_field=self.target_field,
                          style_classes=style_classes,
                          style_type='graduatedSymbol')

        # For printing map purpose
        map_title = tr('Buildings affected by volcanic hazard zone')
        legend_notes = tr('Thousand separator is represented by %s' %
                          get_thousand_separator())
        legend_units = tr('(building)')
        legend_title = tr('Building count')

        # Create vector layer and return
        impact_layer = Vector(
            data=new_data_table,
            projection=hazard_layer.get_projection(),
            geometry=hazard_layer.get_geometry(as_geometry_objects=True),
            name=tr('Buildings affected by volcanic hazard zone'),
            keywords={'impact_summary': impact_summary,
                      'impact_table': impact_table,
                      'target_field': self.target_field,
                      'map_title': map_title,
                      'legend_notes': legend_notes,
                      'legend_units': legend_units,
                      'legend_title': legend_title},
            style_info=style_info)
        return impact_layer

    def run(self):
        """Plugin for impact of population as derived by continuous hazard.

        Hazard is reclassified into 3 classes based on the extrema provided
        as impact function parameters.

        Counts number of people exposed to each category of the hazard

        :returns:
          Map of population exposed to high category
          Table with number of people in each category
        """

        thresholds = [
            p.value for p in self.parameters['Categorical thresholds'].value]

        # Thresholds must contain 3 thresholds
        if len(thresholds) != 3:
            raise FunctionParametersError(
                'The thresholds must consist of 3 values.')

        # Thresholds must monotonically increasing
        monotonically_increasing_flag = all(
            x < y for x, y in zip(thresholds, thresholds[1:]))
        if not monotonically_increasing_flag:
            raise FunctionParametersError(
                'Each threshold should be larger than the previous.')

        # The 3 categories
        low_t = thresholds[0]
        medium_t = thresholds[1]
        high_t = thresholds[2]

        # Extract data as numeric arrays
        hazard_data = self.hazard.layer.get_data(nan=True)  # Category
        if has_no_data(hazard_data):
            self.no_data_warning = True

        # Calculate impact as population exposed to each category
        exposure_data = self.exposure.layer.get_data(nan=True, scaling=True)
        if has_no_data(exposure_data):
            self.no_data_warning = True

        # Make 3 data for each zone. Get the value of the exposure if the
        # exposure is in the hazard zone, else just assign 0
        low_exposure = numpy.where(hazard_data < low_t, exposure_data, 0)
        medium_exposure = numpy.where(
            (hazard_data >= low_t) & (hazard_data < medium_t),
            exposure_data, 0)
        high_exposure = numpy.where(
            (hazard_data >= medium_t) & (hazard_data <= high_t),
            exposure_data, 0)
        impacted_exposure = low_exposure + medium_exposure + high_exposure

        # Count totals
        self.total_population = int(numpy.nansum(exposure_data))
        self.affected_population[
            tr('Population in high hazard areas')] = int(
                numpy.nansum(high_exposure))
        self.affected_population[
            tr('Population in medium hazard areas')] = int(
                numpy.nansum(medium_exposure))
        self.affected_population[
            tr('Population in low hazard areas')] = int(
                numpy.nansum(low_exposure))
        self.unaffected_population = (
            self.total_population - self.total_affected_population)

        # check for zero impact
        if self.total_affected_population == 0:
            message = no_population_impact_message(self.question)
            raise ZeroImpactException(message)

        # Don't show digits less than a 1000
        self.minimum_needs = [
            parameter.serialize() for parameter in
            filter_needs_parameters(self.parameters['minimum needs'])
        ]
        total_needs = self.total_needs

        # Style for impact layer
        colours = [
            '#FFFFFF', '#38A800', '#79C900', '#CEED00',
            '#FFCC00', '#FF6600', '#FF0000', '#7A0000']
        classes = create_classes(impacted_exposure.flat[:], len(colours))
        interval_classes = humanize_class(classes)
        style_classes = []

        for i in xrange(len(colours)):
            style_class = dict()
            if i == 1:
                label = create_label(
                    interval_classes[i],
                    tr('Low Population [%i people/cell]' % classes[i]))
            elif i == 4:
                label = create_label(
                    interval_classes[i],
                    tr('Medium Population [%i people/cell]' % classes[i]))
            elif i == 7:
                label = create_label(
#.........这里部分代码省略.........

#.........这里部分代码省略.........
                    '%s' % format_int(
                        population_rounding(total_affected_population)),
                    blank_cell],
                header=True)]

        for hazard_zone in self.hazard_zones:
            table_body.append(
                TableRow(
                    [
                        hazard_zone,
                        format_int(
                            population_rounding(
                                affected_population[hazard_zone]))
                    ]))

        table_body.extend([
            TableRow(tr(
                'Map shows the number of people impacted in each of the '
                'hazard zones.'))])

        impact_table = Table(table_body).toNewlineFreeString()

        # Extend impact report for on-screen display
        table_body.extend(
            [TableRow(tr('Notes'), header=True),
             tr('Total population: %s in the exposure layer') % format_int(
                 total_population),
             tr('"nodata" values in the exposure layer are treated as 0 '
                'when counting the affected or total population')]
        )

        impact_summary = Table(table_body).toNewlineFreeString()

        # Create style
        colours = ['#FFFFFF', '#38A800', '#79C900', '#CEED00',
                   '#FFCC00', '#FF6600', '#FF0000', '#7A0000']
        classes = create_classes(
            covered_exposure_layer.get_data().flat[:], len(colours))
        interval_classes = humanize_class(classes)
        # Define style info for output polygons showing population counts
        style_classes = []
        for i in xrange(len(colours)):
            style_class = dict()
            style_class['label'] = create_label(interval_classes[i])
            if i == 1:
                label = create_label(
                    interval_classes[i],
                    tr('Low Population [%i people/cell]' % classes[i]))
            elif i == 4:
                label = create_label(
                    interval_classes[i],
                    tr('Medium Population [%i people/cell]' % classes[i]))
            elif i == 7:
                label = create_label(
                    interval_classes[i],
                    tr('High Population [%i people/cell]' % classes[i]))
            else:
                label = create_label(interval_classes[i])

            if i == 0:
                transparency = 100
            else:
                transparency = 0

            style_class['label'] = label
            style_class['quantity'] = classes[i]
            style_class['colour'] = colours[i]
            style_class['transparency'] = transparency
            style_classes.append(style_class)

        # Override style info with new classes and name
        style_info = dict(
            target_field=None,
            style_classes=style_classes,
            style_type='rasterStyle')

        # For printing map purpose
        map_title = tr('People impacted by each hazard zone')
        legend_notes = tr('Thousand separator is represented by  %s' %
                          get_thousand_separator())
        legend_units = tr('(people per cell)')
        legend_title = tr('Population')

        # Create vector layer and return
        impact_layer = Raster(
            data=covered_exposure_layer.get_data(),
            projection=covered_exposure_layer.get_projection(),
            geotransform=covered_exposure_layer.get_geotransform(),
            name=tr('People impacted by each hazard zone'),
            keywords={'impact_summary': impact_summary,
                      'impact_table': impact_table,
                      'target_field': self.target_field,
                      'map_title': map_title,
                      'legend_notes': legend_notes,
                      'legend_units': legend_units,
                      'legend_title': legend_title},
            style_info=style_info)

        self._impact = impact_layer
        return impact_layer

#.........这里部分代码省略.........
        high_exposure = numpy.where(
            (hazard_data >= medium_t) & (hazard_data <= high_t),
            exposure_data, 0)
        impacted_exposure = low_exposure + medium_exposure + high_exposure

        # Count totals
        total = int(numpy.nansum(exposure_data))
        low_total = int(numpy.nansum(low_exposure))
        medium_total = int(numpy.nansum(medium_exposure))
        high_total = int(numpy.nansum(high_exposure))
        total_impact = high_total + medium_total + low_total

        # Check for zero impact
        if total_impact == 0:
            table_body = [
                self.question,
                TableRow(
                    [tr('People impacted'),
                     '%s' % format_int(total_impact)], header=True)]
            message = Table(table_body).toNewlineFreeString()
            raise ZeroImpactException(message)

        # Don't show digits less than a 1000
        total = population_rounding(total)
        total_impact = population_rounding(total_impact)
        low_total = population_rounding(low_total)
        medium_total = population_rounding(medium_total)
        high_total = population_rounding(high_total)

        minimum_needs = [
            parameter.serialize() for parameter in
            self.parameters['minimum needs']
        ]

        table_body = self._tabulate(
            high_total, low_total, medium_total, self.question, total_impact)

        impact_table = Table(table_body).toNewlineFreeString()

        table_body, total_needs = self._tabulate_notes(
            minimum_needs, table_body, total, total_impact, no_data_warning)

        impact_summary = Table(table_body).toNewlineFreeString()
        map_title = tr('People in each hazard areas (low, medium, high)')

        # Style for impact layer
        colours = [
            '#FFFFFF', '#38A800', '#79C900', '#CEED00',
            '#FFCC00', '#FF6600', '#FF0000', '#7A0000']
        classes = create_classes(impacted_exposure.flat[:], len(colours))
        interval_classes = humanize_class(classes)
        style_classes = []

        for i in xrange(len(colours)):
            style_class = dict()
            if i == 1:
                label = create_label(
                    interval_classes[i],
                    tr('Low Population [%i people/cell]' % classes[i]))
            elif i == 4:
                label = create_label(
                    interval_classes[i],
                    tr('Medium Population [%i people/cell]' % classes[i]))
            elif i == 7:
                label = create_label(
                    interval_classes[i],
                    tr('High Population [%i people/cell]' % classes[i]))
            else:
                label = create_label(interval_classes[i])
            style_class['label'] = label
            style_class['quantity'] = classes[i]
            if i == 0:
                transparency = 100
            else:
                transparency = 0
            style_class['transparency'] = transparency
            style_class['colour'] = colours[i]
            style_classes.append(style_class)

        style_info = dict(
            target_field=None,
            style_classes=style_classes,
            style_type='rasterStyle')

        # Create raster object and return
        raster_layer = Raster(
            data=impacted_exposure,
            projection=hazard_layer.get_projection(),
            geotransform=hazard_layer.get_geotransform(),
            name=tr('Population might %s') % (
                self.impact_function_manager.
                get_function_title(self).lower()),
            keywords={
                'impact_summary': impact_summary,
                'impact_table': impact_table,
                'map_title': map_title,
                'total_needs': total_needs},
            style_info=style_info)
        self._impact = raster_layer
        return raster_layer

#.........这里部分代码省略.........
            numpy.nansum(exposure_layer.get_data(scaling=False)))

        minimum_needs = [
            parameter.serialize() for parameter in
            self.parameters['minimum needs']
        ]

        # Rounding
        total_affected_population, rounding = population_rounding_full(
            total_affected_population)
        total_population = population_rounding(total_population)
        evacuated, rounding_evacuated = population_rounding_full(evacuated)

        # Generate impact report for the pdf map
        table_body, total_needs = self._tabulate(
            total_affected_population,
            evacuated,
            minimum_needs,
            self.question,
            rounding,
            rounding_evacuated)

        impact_table = Table(table_body).toNewlineFreeString()

        self._tabulate_action_checklist(
            table_body,
            total_population,
            nan_warning)
        impact_summary = Table(table_body).toNewlineFreeString()

        # Create style
        colours = ['#FFFFFF', '#38A800', '#79C900', '#CEED00',
                   '#FFCC00', '#FF6600', '#FF0000', '#7A0000']
        classes = create_classes(
            new_covered_exposure_data.flat[:], len(colours))

        # check for zero impact
        if min(classes) == 0 == max(classes):
            table_body = [
                self.question,
                TableRow(
                    [tr('People affected'),
                     '%s' % format_int(total_affected_population)],
                    header=True)]
            message = Table(table_body).toNewlineFreeString()
            raise ZeroImpactException(message)

        interval_classes = humanize_class(classes)
        # Define style info for output polygons showing population counts
        style_classes = []
        for i in xrange(len(colours)):
            style_class = dict()
            style_class['label'] = create_label(interval_classes[i])
            if i == 1:
                label = create_label(
                    interval_classes[i],
                    tr('Low Population [%i people/cell]' % classes[i]))
            elif i == 4:
                label = create_label(
                    interval_classes[i],
                    tr('Medium Population [%i people/cell]' % classes[i]))
            elif i == 7:
                label = create_label(
                    interval_classes[i],
                    tr('High Population [%i people/cell]' % classes[i]))
            else:

#.........这里部分代码省略.........
        table_body.append(TableRow(tr('Do we have enough relief items?')))
        table_body.append(TableRow(tr('If yes, where are they located and how '
                                      'will we distribute them?')))
        table_body.append(TableRow(tr(
            'If no, where can we obtain additional relief items from and how '
            'will we transport them to here?')))

        # Extend impact report for on-screen display
        table_body.extend([
            TableRow(tr('Notes'), header=True),
            tr('Total population: %s') % format_int(total),
            tr('People need evacuation if tsunami levels exceed %(eps).1f m') %
            {'eps': thresholds[-1]},
            tr('Minimum needs are defined in BNPB regulation 7/2008'),
            tr('All values are rounded up to the nearest integer in order to '
               'avoid representing human lives as fractions.')])

        if len(counts) > 1:
            table_body.append(TableRow(tr('Detailed breakdown'), header=True))

            for i, val in enumerate(counts[:-1]):
                s = (tr('People in %(lo).1f m to %(hi).1f m of water: %(val)i')
                     % {'lo': thresholds[i],
                        'hi': thresholds[i + 1],
                        'val': format_int(val[0])})
                table_body.append(TableRow(s))

        # Result
        impact_summary = Table(table_body).toNewlineFreeString()
        impact_table = impact_summary

        # check for zero impact
        if numpy.nanmax(impact) == 0 == numpy.nanmin(impact):
            table_body = [
                question,
                TableRow([(tr('People in %.1f m of water') % thresholds[-1]),
                          '%s' % format_int(evacuated)],
                         header=True)]
            my_message = Table(table_body).toNewlineFreeString()
            raise ZeroImpactException(my_message)

        # Create style
        colours = [
            '#FFFFFF', '#38A800', '#79C900', '#CEED00',
            '#FFCC00', '#FF6600', '#FF0000', '#7A0000']
        classes = create_classes(impact.flat[:], len(colours))
        interval_classes = humanize_class(classes)
        style_classes = []

        for i in xrange(len(colours)):
            style_class = dict()
            if i == 1:
                label = create_label(interval_classes[i], 'Low')
            elif i == 4:
                label = create_label(interval_classes[i], 'Medium')
            elif i == 7:
                label = create_label(interval_classes[i], 'High')
            else:
                label = create_label(interval_classes[i])
            style_class['label'] = label
            style_class['quantity'] = classes[i]
            if i == 0:
                transparency = 100
            else:
                transparency = 0
            style_class['transparency'] = transparency
            style_class['colour'] = colours[i]
            style_classes.append(style_class)

        style_info = dict(
            target_field=None,
            style_classes=style_classes,
            style_type='rasterStyle')

        # For printing map purpose
        map_title = tr('People in need of evacuation')
        legend_notes = tr(
            'Thousand separator is represented by %s' %
            get_thousand_separator())
        legend_units = tr('(people per cell)')
        legend_title = tr('Population')

        # Create raster object and return
        raster = Raster(
            impact,
            projection=hazard_layer.get_projection(),
            geotransform=hazard_layer.get_geotransform(),
            name=tr('Population which %s') % (
                get_function_title(self).lower()),
            keywords={
                'impact_summary': impact_summary,
                'impact_table': impact_table,
                'map_title': map_title,
                'legend_notes': legend_notes,
                'legend_units': legend_units,
                'legend_title': legend_title,
                'evacuated': evacuated,
                'total_needs': total_needs},
            style_info=style_info)
        return raster

    def run(self):
        """Indonesian Earthquake Fatality Model."""
        self.validate()
        self.prepare()

        displacement_rate = self.hardcoded_parameters['displacement_rate']

        # Extract data grids
        hazard = self.hazard.layer.get_data()   # Ground Shaking
        # Population Density
        exposure = self.exposure.layer.get_data(scaling=True)

        # Calculate people affected by each MMI level
        # FIXME (Ole): this range is 2-9. Should 10 be included?
        mmi_range = self.hardcoded_parameters['mmi_range']
        number_of_exposed = {}
        number_of_displaced = {}
        number_of_fatalities = {}

        # Calculate fatality rates for observed Intensity values (hazard
        # based on ITB power model
        mask = numpy.zeros(hazard.shape)
        for mmi in mmi_range:
            # Identify cells where MMI is in class i and
            # count people affected by this shake level
            step = self.hardcoded_parameters['step']
            mmi_matches = numpy.where(
                (hazard > mmi - step) * (
                    hazard <= mmi + step),
                exposure, 0)

            # Calculate expected number of fatalities per level
            exposed = numpy.nansum(mmi_matches)
            fatalities = self.fatality_rate(mmi) * exposed

            # Calculate expected number of displaced people per level
            displacements = displacement_rate[mmi] * (exposed - fatalities)

            # Adjust displaced people to disregard fatalities.
            # Set to zero if there are more fatalities than displaced.
            # displacements = numpy.where(
            #    displacements > fatalities, displacements - fatalities, 0)

            # Sum up numbers for map
            # We need to use matrices here and not just numbers #2235
            mask += mmi_matches * (1 - self.fatality_rate(mmi))   # Displaced

            # Generate text with result for this study
            # This is what is used in the real time system exposure table
            number_of_exposed[mmi] = exposed
            number_of_displaced[mmi] = displacements
            # noinspection PyUnresolvedReferences
            number_of_fatalities[mmi] = fatalities

        # Total statistics
        self.total_population = numpy.nansum(number_of_exposed.values())
        self.total_fatalities = numpy.nansum(number_of_fatalities.values())
        total_displaced = numpy.nansum(number_of_displaced.values())

        # As per email discussion with Ole, Trevor, Hadi, total fatalities < 50
        # will be rounded down to 0 - Tim
        # Needs to revisit but keep it alive for the time being - Hyeuk, Jono
        if self.total_fatalities < 50:
            self.total_fatalities = 0

        affected_population = self.affected_population
        affected_population[tr('Number of fatalities')] = self.total_fatalities
        affected_population[
            tr('Number of people displaced')] = total_displaced
        self.unaffected_population = (
            self.total_population - total_displaced - self.total_fatalities)
        self._evacuation_category = tr('Number of people displaced')

        self.minimum_needs = [
            parameter.serialize() for parameter in
            filter_needs_parameters(self.parameters['minimum needs'])
        ]
        total_needs = self.total_needs

        # Result
        impact_summary = self.generate_html_report()
        impact_table = impact_summary

        # Create style
        colours = ['#EEFFEE', '#FFFF7F', '#E15500', '#E4001B', '#730000']
        classes = create_classes(mask.flat[:], len(colours))
        interval_classes = humanize_class(classes)
        style_classes = []
        for i in xrange(len(interval_classes)):
            style_class = dict()
            style_class['label'] = create_label(interval_classes[i])
            style_class['quantity'] = classes[i]
            if i == 0:
                transparency = 100
            else:
                transparency = 30
            style_class['transparency'] = transparency
            style_class['colour'] = colours[i]
            style_classes.append(style_class)

#.........这里部分代码省略.........

    def run(self):
        """Run volcano population evacuation Impact Function.

        Counts number of people exposed to volcano event.

        :returns: Map of population exposed to the volcano hazard zone.
            The returned dict will include a table with number of people
            evacuated and supplies required.
        :rtype: dict

        :raises:
            * Exception - When hazard layer is not vector layer
            * RadiiException - When radii are not valid (they need to be
                monotonically increasing)
        """
        self.validate()
        self.prepare()

        # Parameters
        self.hazard_class_attribute = self.hazard.keyword('field')
        name_attribute = self.hazard.keyword('volcano_name_field')

        if has_no_data(self.exposure.layer.get_data(nan=True)):
            self.no_data_warning = True

        # Input checks
        if not self.hazard.layer.is_polygon_data:
            msg = ('Input hazard must be a polygon layer. I got %s with '
                   'layer type %s' % (self.hazard.layer.get_name(),
                                      self.hazard.layer.get_geometry_name()))
            raise Exception(msg)

        # Check if hazard_class_attribute exists in hazard_layer
        if (self.hazard_class_attribute not in
                self.hazard.layer.get_attribute_names()):
            msg = ('Hazard data %s did not contain expected attribute %s ' % (
                self.hazard.layer.get_name(), self.hazard_class_attribute))
            # noinspection PyExceptionInherit
            raise InaSAFEError(msg)

        features = self.hazard.layer.get_data()
        hazard_zone_categories = list(
            set(self.hazard.layer.get_data(self.hazard_class_attribute)))

        # Get names of volcanoes considered
        if name_attribute in self.hazard.layer.get_attribute_names():
            volcano_name_list = []
            # Run through all polygons and get unique names
            for row in features:
                volcano_name_list.append(row[name_attribute])

            self.volcano_names = ', '.join(set(volcano_name_list))

        # Run interpolation function for polygon2raster
        interpolated_layer, covered_exposure_layer = \
            assign_hazard_values_to_exposure_data(
                self.hazard.layer,
                self.exposure.layer,
                attribute_name=self.target_field)

        # Initialise total affected per category
        for hazard_zone in hazard_zone_categories:
            self.affected_population