Source code for safe.postprocessors.gender_postprocessor

# -*- coding: utf-8 -*-
"""Postprocessors package.

"""

__author__ = 'Marco Bernasocchi <[email protected]>'
__revision__ = '$Format:%H$'
__date__ = '10/10/2012'
__license__ = "GPL"
__copyright__ = 'Copyright 2012, Australia Indonesia Facility for '
__copyright__ += 'Disaster Reduction'

import logging
from safe.postprocessors.abstract_postprocessor import AbstractPostprocessor
from safe.utilities.i18n import tr

LOGGER = logging.getLogger('InaSAFE')


[docs]class GenderPostprocessor(AbstractPostprocessor): """ Postprocessor that calculates gender related statistics. See the _calculate_* methods to see indicator specific documentation .. see:: :mod:`safe.defaults` for default values information. """ def __init__(self): AbstractPostprocessor.__init__(self) self.impact_total = None self.female_ratio = None
[docs] def description(self): """Describe briefly what the post processor does. """ return tr('Calculates gender related statistics.')
[docs] def setup(self, params): """Initialise parameters. """ AbstractPostprocessor.setup(self, None) if self.impact_total is not None or self.female_ratio is not None: self._raise_error('clear needs to be called before setup') self.impact_total = params['impact_total'] self.female_ratio = params['female_ratio'] if self.female_ratio > 1: self._raise_error( 'Female ratio should be lower max 1. Found: ' '%s ' % self.female_ratio)
[docs] def process(self): """Setup parameters parameters and performs all the calculations. """ AbstractPostprocessor.process(self) if self.impact_total is None or self.female_ratio is None: self._log_message( '%s not all params have been correctly ' 'initialized, setup needs to be called before ' 'process. Skipping this postprocessor' % self.__class__.__name__) else: self._calculate_total() self._calculate_females() self._calculate_weekly_hygene_packs() self._calculate_weekly_increased_calories()
[docs] def clear(self): """Clear the parameters. """ AbstractPostprocessor.clear(self) self.impact_total = None self.female_ratio = None
def _calculate_total(self): """Total population indicator. This indicator reports the total population. """ name = tr('Total') LOGGER.info(self.impact_total) try: result = self.impact_total result = int(round(result)) except ValueError: result = self.NO_DATA_TEXT self._append_result(name, result) def _calculate_females(self): """Female population count indicator. This indicator reports the amount of female population according to the set female_ratio. """ name = tr('Female count (affected)') result = self.impact_total * self.female_ratio try: result = int(round(result)) except ValueError: result = self.NO_DATA_TEXT self._append_result(name, result) def _calculate_weekly_hygene_packs(self): """Weekly requirements of female hygiene packs indicator. This indicator reports the weekly requirements of female hygiene packs for further detail refer to the "Sample InaSAFE Actions for Vulnerable Populations" [27.07.2012] paper """ name = tr('Weekly hygiene packs') meta = {'description': 'Females hygiene packs for weekly use'} # weekly hygene packs = # affected pop * fem_ratio * 0.7937 * week / intended day-of-use result = self.impact_total * self.female_ratio * 0.7937 * (7 / 7) try: result = int(round(result)) except ValueError: result = self.NO_DATA_TEXT self._append_result(name, result, meta) def _calculate_weekly_increased_calories(self): """Weekly additional kg of rice for pregnant and lactating women indicator. This indicator reports the weekly additional kg of rice for pregnant and lactating women. for further detail refer to the "Sample InaSAFE Actions for Vulnerable Populations" [27.07.2012] paper """ name = tr('Additional weekly rice kg for pregnant and lactating women') meta = {'description': 'Additional rice kg per week for pregnant and ' 'lactating women'} # weekly Kg rice = # affected pop * fem_ratio * 0.7937 * week / intended day-of-use lact_kg = self.impact_total * self.female_ratio * 2 * 0.033782 preg_kg = self.impact_total * self.female_ratio * 2 * 0.01281 result = lact_kg + preg_kg try: result = int(round(result)) except ValueError: result = self.NO_DATA_TEXT self._append_result(name, result, meta)