def run(self, layers):
"""Risk plugin for flood population evacuation
Input
layers: List of layers expected to contain
H: Raster layer of flood depth
P: Raster layer of population data on the same grid as H
Counts number of people exposed to flood levels exceeding
specified threshold.
Return
Map of population exposed to flood levels exceeding the threshold
Table with number of people evacuated and supplies required
"""
# Depth above which people are regarded affected [m]
threshold = 1.0 # Threshold [m]
# Identify hazard and exposure layers
inundation = get_hazard_layer(layers) # Flood inundation [m]
population = get_exposure_layer(layers)
question = get_question(inundation.get_name(),
population.get_name(),
self)
# Extract data as numeric arrays
D = inundation.get_data(nan=0.0) # Depth
# Calculate impact as population exposed to depths > threshold
P = population.get_data(nan=0.0, scaling=True)
I = numpy.where(D > threshold, P, 0)
M = numpy.where(D > 0.5, P, 0)
L = numpy.where(D > 0.3, P, 0)
# Count totals
total = int(numpy.sum(P))
evacuated = int(numpy.sum(I))
medium = int(numpy.sum(M)) - int(numpy.sum(I))
low = int(numpy.sum(L)) - int(numpy.sum(M))
# Don't show digits less than a 1000
if total > 1000:
total = total // 1000 * 1000
if evacuated > 1000:
evacuated = evacuated // 1000 * 1000
if medium > 1000:
medium = medium // 1000 * 1000
if low > 1000:
low = low // 1000 * 1000
# Calculate estimated needs based on BNPB Perka 7/2008 minimum bantuan
rice = evacuated * 2.8
drinking_water = evacuated * 17.5
water = evacuated * 67
family_kits = evacuated / 5
toilets = evacuated / 20
# Generate impact report for the pdf map
table_body = [question,
TableRow([_('People needing evacuation'),
'%i' % evacuated],
header=True),
TableRow(_('Map shows population density needing '
'evacuation'))]
#,
## TableRow([_('People in 50cm to 1m of water '),
## '%i' % medium],
## header=True),
## TableRow([_('People in 30cm to 50cm of water'),
## '%i' % low],
## header=True)]
## TableRow([_('Needs per week'), _('Total')],
## header=True),
## [_('Rice [kg]'), int(rice)],
## [_('Drinking Water [l]'), int(drinking_water)],
## [_('Clean Water [l]'), int(water)],
## [_('Family Kits'), int(family_kits)],
## [_('Toilets'), int(toilets)]]
impact_table = Table(table_body).toNewlineFreeString()
# Extend impact report for on-screen display
table_body.extend([TableRow(_('Notes:'), header=True),
_('Total population: %i') % total,
_('People need evacuation if flood levels '
'exceed %(eps)i m') % {'eps': threshold},
_('People in 50cm to 1m of water: %i') % medium,
_('People in 30cm to 50cm of water: %i') % low])
## _('Minimum needs are defined in BNPB '
## 'regulation 7/2008')])
impact_summary = Table(table_body).toNewlineFreeString()
map_title = _('People in need of evacuation')
style_info['legend_title'] = _('Population Density')
# Create raster object and return
R = Raster(I,
projection=inundation.get_projection(),
geotransform=inundation.get_geotransform(),
name=_('Population which %s') % get_function_title(self),
keywords={'impact_summary': impact_summary,
'impact_table': impact_table,
'map_title': map_title},
style_info=style_info)
return R
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
def run(self, layers, x=0.62275231, y=8.03314466, zeta=2.15):
"""Gender specific earthquake impact model
Input
layers: List of layers expected to contain
H: Raster layer of MMI ground shaking
P: Raster layer of population density
"""
# Define percentages of people being displaced at each mmi level
displacement_rate = {1: 0, 2: 0, 3: 0, 4: 0, 5: 0, 6: 0, 7: 0.1, 8: 0.5, 9: 0.75, 10: 1.0}
# Extract input layers
intensity = get_hazard_layer(layers)
population = get_exposure_layer(layers)
question = get_question(intensity.get_name(), population.get_name(), self)
# Extract data grids
H = intensity.get_data() # Ground Shaking
P = population.get_data() # Population Density
# Calculate population affected by each MMI level
# FIXME (Ole): this range is 2-9. Should 10 be included?
mmi_range = range(2, 10)
number_of_exposed = {}
number_of_fatalities = {}
# Calculate fatality rates for observed Intensity values (H
# based on ITB power model
R = numpy.zeros(H.shape)
for mmi in mmi_range:
# Identify cells where MMI is in class i
mask = (H > mmi - 0.5) * (H <= mmi + 0.5)
# Count population affected by this shake level
I = numpy.where(mask, P, 0)
# Calculate expected number of fatalities per level
fatality_rate = numpy.power(10.0, x * mmi - y)
F = fatality_rate * I
# Sum up fatalities to create map
R += F
# Generate text with result for this study
# This is what is used in the real time system exposure table
number_of_exposed[mmi] = numpy.nansum(I.flat)
number_of_fatalities[mmi] = numpy.nansum(F.flat)
# Set resulting layer to zero when less than a threshold. This is to
# achieve transparency (see issue #126).
R[R < 1] = numpy.nan
# Total statistics
total = numpy.nansum(P.flat)
# Compute number of fatalities
fatalities = numpy.nansum(number_of_fatalities.values())
# Compute number of people displaced due to building collapse
displaced = 0
for mmi in mmi_range:
displaced += displacement_rate[mmi] * number_of_exposed[mmi]
displaced_women = displaced * 0.52 # Could be made province dependent
displaced_pregnant_women = displaced_women * 0.01387 # CHECK
# Generate impact report
table_body = [question]
# Add total fatality estimate
s = str(int(fatalities)).rjust(10)
table_body.append(TableRow([_("Number of fatalities"), s], header=True))
# Add total estimate of people displaced
s = str(int(displaced)).rjust(10)
table_body.append(TableRow([_("Number of people displaced"), s], header=True))
s = str(int(displaced_women)).rjust(10)
table_body.append(TableRow([_("Number of women displaced"), s], header=True))
s = str(int(displaced_pregnant_women)).rjust(10)
table_body.append(TableRow([_("Number of pregnant women displaced"), s], header=True))
table_body.append(TableRow(_("Action Checklist:"), header=True))
table_body.append(_("Are enough shelters available for %i women?") % displaced_women)
table_body.append(
_("Are enough facilities available to assist %i " "pregnant women?") % displaced_pregnant_women
)
table_body.append(TableRow(_("Notes:"), header=True))
table_body.append(_("Fatality model is from " "Institute of Teknologi Bandung 2012."))
impact_summary = Table(table_body).toNewlineFreeString()
impact_table = impact_summary
map_title = _("Earthquake impact to population")
# Create new layer and return
L = Raster(
R,
projection=population.get_projection(),
geotransform=population.get_geotransform(),
keywords={
"impact_summary": impact_summary,
"total_population": total,
"total_fatalities": fatalities,
"impact_table": impact_table,
"map_title": map_title,
},
name=_("Estimated fatalities"),
style_info=style_info,
)
# Maybe return a shape file with contours instead
return L
def run(self, layers,
x=0.62275231, y=8.03314466, zeta=2.15):
"""Indonesian Earthquake Fatality Model
Input
layers: List of layers expected to contain
H: Raster layer of MMI ground shaking
P: Raster layer of population density
"""
# Define percentages of people being displaced at each mmi level
displacement_rate = {1: 0, 2: 0, 3: 0, 4: 0, 5: 0, 6: 0,
7: 0.1, 8: 0.5, 9: 0.75, 10: 1.0}
# Extract input layers
intensity = get_hazard_layer(layers)
population = get_exposure_layer(layers)
question = get_question(intensity.get_name(),
population.get_name(),
self)
# Extract data grids
H = intensity.get_data() # Ground Shaking
P = population.get_data() # Population Density
# Calculate population affected by each MMI level
# FIXME (Ole): this range is 2-9. Should 10 be included?
mmi_range = range(2, 10)
number_of_exposed = {}
number_of_displaced = {}
number_of_fatalities = {}
# Calculate fatality rates for observed Intensity values (H
# based on ITB power model
R = numpy.zeros(H.shape)
for mmi in mmi_range:
# Identify cells where MMI is in class i
mask = (H > mmi - 0.5) * (H <= mmi + 0.5)
# Count population affected by this shake level
I = numpy.where(mask, P, 0)
# Calculate expected number of fatalities per level
fatality_rate = numpy.power(10.0, x * mmi - y)
F = fatality_rate * I
# Calculate expected number of displaced people per level
try:
D = displacement_rate[mmi] * I
except Exception, e:
msg = 'mmi = %i, I = %s, Error msg: %s' % (mmi, str(I), str(e))
fid = open('C:\\error_message.txt', 'wb')
fid.write(msg)
fid.close()
# Sum up numbers for map
R += F # Fatalities
#R += D # Displaced
# Generate text with result for this study
# This is what is used in the real time system exposure table
number_of_exposed[mmi] = numpy.nansum(I.flat)
number_of_displaced[mmi] = numpy.nansum(D.flat)
number_of_fatalities[mmi] = numpy.nansum(F.flat)
def run(self, layers):
"""Flood impact to buildings (e.g. from Open Street Map)
"""
threshold = 1.0 # Flood threshold [m]
# Extract data
H = get_hazard_layer(layers) # Depth
E = get_exposure_layer(layers) # Building locations
question = get_question(H.get_name(),
E.get_name(),
self)
# Interpolate hazard level to building locations
if H.is_raster:
I = H.interpolate(E, attribute_name='depth')
hazard_type = 'depth'
else:
I = H.interpolate(E)
hazard_type = 'floodprone'
# Extract relevant exposure data
attribute_names = I.get_attribute_names()
attributes = I.get_data()
N = len(I)
# Calculate building impact
count = 0
buildings = {}
affected_buildings = {}
for i in range(N):
if hazard_type == 'depth':
# Get the interpolated depth
x = float(attributes[i]['depth'])
x = x > threshold
elif hazard_type == 'floodprone':
# Use interpolated polygon attribute
atts = attributes[i]
if 'FLOODPRONE' in atts:
res = atts['FLOODPRONE']
if res is None:
x = False
else:
x = res.lower() == 'yes'
else:
# If there isn't a flood prone attribute,
# assume that building is wet if inside polygon
# as flag by generic attribute AFFECTED
res = atts['Affected']
if res is None:
x = False
else:
x = res
else:
msg = (_('Unknown hazard type %s. '
'Must be either "depth" or "floodprone"')
% hazard_type)
raise Exception(msg)
# Count affected buildings by usage type if available
if 'type' in attribute_names:
usage = attributes[i]['type']
else:
usage = None
if usage is not None and usage != 0:
key = usage
else:
key = 'unknown'
if key not in buildings:
buildings[key] = 0
affected_buildings[key] = 0
# Count all buildings by type
buildings[key] += 1
if x is True:
# Count affected buildings by type
affected_buildings[key] += 1
# Count total affected buildings
count += 1
# Add calculated impact to existing attributes
attributes[i][self.target_field] = x
# Lump small entries and 'unknown' into 'other' category
for usage in buildings.keys():
x = buildings[usage]
if x < 25 or usage == 'unknown':
if 'other' not in buildings:
buildings['other'] = 0
affected_buildings['other'] = 0
buildings['other'] += x
affected_buildings['other'] += affected_buildings[usage]
del buildings[usage]
del affected_buildings[usage]
# Generate csv file of results
## fid = open('C:\dki_table_%s.csv' % H.get_name(), 'wb')
## fid.write('%s, %s, %s\n' % (_('Building type'),
## _('Temporarily closed'),
## _('Total')))
## fid.write('%s, %i, %i\n' % (_('All'), count, N))
# Generate simple impact report
table_body = [question,
TableRow([_('Building type'),
_('Temporarily closed'),
_('Total')],
header=True),
TableRow([_('All'), count, N])]
## fid.write('%s, %s, %s\n' % (_('Building type'),
## _('Temporarily closed'),
## _('Total')))
# Generate break down by building usage type is available
if 'type' in attribute_names:
# Make list of building types
building_list = []
for usage in buildings:
building_type = usage.replace('_', ' ')
# Lookup internationalised value if available
if building_type in internationalised_values:
building_type = internationalised_values[building_type]
else:
print ('WARNING: %s could not be translated'
% building_type)
building_list.append([building_type.capitalize(),
affected_buildings[usage],
buildings[usage]])
## fid.write('%s, %i, %i\n' % (building_type.capitalize(),
## affected_buildings[usage],
## buildings[usage]))
# Sort alphabetically
building_list.sort()
#table_body.append(TableRow([_('Building type'),
# _('Temporarily closed'),
# _('Total')], header=True))
table_body.append(TableRow(_('Breakdown by building type'),
header=True))
for row in building_list:
s = TableRow(row)
table_body.append(s)
## fid.close()
table_body.append(TableRow(_('Action Checklist:'), header=True))
table_body.append(TableRow(_('Are the critical facilities still '
'open?')))
table_body.append(TableRow(_('Notes:'), header=True))
assumption = _('Buildings are said to be flooded when ')
if hazard_type == 'depth':
assumption += _('flood levels exceed %.1f m') % threshold
else:
assumption += _('in areas marked as flood prone')
table_body.append(assumption)
impact_summary = Table(table_body).toNewlineFreeString()
impact_table = impact_summary
map_title = _('Buildings inundated')
# Create style
style_classes = [dict(label=_('Not Flooded'), min=0, max=0,
colour='#1EFC7C', transparency=0, size=1),
dict(label=_('Flooded'), min=1, max=1,
colour='#F31A1C', transparency=0, size=1)]
style_info = dict(target_field=self.target_field,
style_classes=style_classes)
# Create vector layer and return
V = Vector(data=attributes,
projection=I.get_projection(),
geometry=I.get_geometry(),
name=_('Estimated buildings affected'),
keywords={'impact_summary': impact_summary,
'impact_table': impact_table,
'map_title': map_title},
style_info=style_info)
return V
