Source code for safe.postprocessors.gender_postprocessor

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

"""

__author__ = 'Marco Bernasocchi <marco@opengis.ch>'
__revision__ = '$Format:%H$'
__date__ = '10/10/2012'
__license__ = "GPL"
__copyright__ = 'Copyright 2012, Australia Indonesia Facility for '
__copyright__ += 'Disaster Reduction'

from safe.postprocessors.abstract_postprocessor import (
                                                    AbstractPostprocessor)

from safe.common.utilities import ugettext as tr


[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.population_total = None self.female_ratio = None
[docs] def setup(self, params): """concrete implementation it takes care of the needed parameters being initialized Args: params: Dict of parameters to pass to the post processor Returns: None Raises: None """ AbstractPostprocessor.setup(self, None) if self.population_total is not None or self.female_ratio is not None: self._raise_error('clear needs to be called before setup') self.population_total = params['population_total'] self.female_ratio = params['female_ratio']
[docs] def process(self): """concrete implementation it takes care of the needed parameters being available and performs all the indicators calculations Args: None Returns: None Raises: None """ AbstractPostprocessor.process(self) if self.population_total is None or self.female_ratio is None: self._raise_error('setup needs to be called before process') self._calculate_total() self._calculate_females() self._calculate_weekly_hygene_packs() self._calculate_weekly_increased_calories()
[docs] def clear(self): """concrete implementation it takes care of the needed parameters being properly cleared Args: None Returns: None Raises: None """ AbstractPostprocessor.clear(self) self.population_total = None self.female_ratio = None
def _calculate_total(self): """Total population indicator. this indicator reports the total population Args: None Returns: None Raises: None """ myName = tr('Total') #FIXME (MB) Shameless hack to deal with issue #368 if self.population_total > 8000000000 or self.population_total < 0: self._append_result(myName, self.NO_DATA_TEXT) return try: myResult = self.population_total myResult = int(round(myResult)) except ValueError: myResult = self.NO_DATA_TEXT self._append_result(myName, myResult) def _calculate_females(self): """Female population count indicator. this indicator reports the amount of female population according to the set female_ratio Args: None Returns: None Raises: None """ myName = tr('Female population') #FIXME (MB) Shameless hack to deal with issue #368 if self.population_total > 8000000000 or self.population_total < 0: self._append_result(myName, self.NO_DATA_TEXT) return myResult = self.population_total * self.female_ratio try: myResult = int(round(myResult)) except ValueError: myResult = self.NO_DATA_TEXT self._append_result(myName, myResult) 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 Args: None Returns: None Raises: None """ myName = tr('Weekly hygiene packs') myMeta = {'description': 'Females hygiene packs for weekly use'} #FIXME (MB) Shameless hack to deal with issue #368 if self.population_total > 8000000000 or self.population_total < 0: self._append_result(myName, self.NO_DATA_TEXT, myMeta) return #weekly hygene packs = # affected pop * fem_ratio * 0.7937 * week / intended day-of-use myResult = self.population_total * self.female_ratio * 0.7937 * (7 / 7) try: myResult = int(round(myResult)) except ValueError: myResult = self.NO_DATA_TEXT self._append_result(myName, myResult, myMeta) 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 Args: None Returns: None Raises: None """ myName = tr('Additional weekly rice kg for pregnant and lactating' ' women') myMeta = {'description': 'Additional rice kg per week for pregnant and' ' lactating women'} #FIXME (MB) Shameless hack to deal with issue #368 if self.population_total > 8000000000 or self.population_total < 0: self._append_result(myName, self.NO_DATA_TEXT, myMeta) return #weekly Kg rice = # affected pop * fem_ratio * 0.7937 * week / intended day-of-use myLactKg = self.population_total * self.female_ratio * 2 * 0.033782 myPregKg = self.population_total * self.female_ratio * 2 * 0.01281 myResult = myLactKg + myPregKg try: myResult = int(round(myResult)) except ValueError: myResult = self.NO_DATA_TEXT self._append_result(myName, myResult, myMeta)