"""National hazard exposure maps
"""
import os
import sys
from collections import OrderedDict
import geopandas as gpd
import pandas as pd
import numpy as np
import cartopy.crs as ccrs
import cartopy.io.shapereader as shpreader
import matplotlib.pyplot as plt
from shapely.geometry import LineString
from atra.utils import *
from tqdm import tqdm
[docs]def main():
tqdm.pandas()
config = load_config()
data_path = config['paths']['data']
modes = ['road', 'rail','bridge']
modes = ['road']
hazard_cols = ['hazard_type','climate_scenario','year','probability']
return_periods = [10,100,1000]
plot_set = [
{
'hazard': 'pluvial flooding',
'color': ['#c6dbef', '#9ecae1', '#6baed6', '#3182bd', '#08519c','#d9d9d9'],
'name': 'Pluvial flooding'
},
{
'hazard': 'fluvial flooding',
'color': ['#c6dbef', '#9ecae1', '#6baed6', '#3182bd', '#08519c','#d9d9d9'],
'name': 'Fluvial flooding'
},
]
climate_change = True
national_pth = os.path.join(config['paths']['output'],
'network_stats',
'national_scale_hazard_intersections_boundary_summary.xlsx')
# Give the paths to the input data files
print('* Reading department dataframe')
zones_path = os.path.join(config['paths']['incoming_data'],
'admin_boundaries_and_census',
'departamento', 'Departamentos.shp')
zones = gpd.read_file(zones_path,encoding='utf-8')
zones = zones.to_crs({'init': 'epsg:4326'})
zones.rename(columns={'OBJECTID':'department_id','Name':'department_name'},inplace=True)
labels = ['0 to 10', '10 to 20', '20 to 30', '30 to 40', '40 to 100', 'No value']
change_colors = ['#1a9850','#66bd63','#a6d96a','#d9ef8b','#fee08b','#fdae61','#f46d43','#d73027','#d9d9d9']
change_labels = ['< -100','-100 to -50','-50 to -10','-10 to 0','0 to 10','10 to 50','50 to 100','> 100','No change/value']
change_ranges = [(-1e10,-100),(-50,-20),(-50,-10),(-10,0),(0.001,10),(10,50),(50,100),(100,1e10)]
for rp in return_periods:
for mode in modes:
all_edge_fail_scenarios = pd.read_excel(national_pth,sheet_name=mode)
# all_edge_fail_scenarios = all_edge_fail_scenarios.groupby(hazard_cols + ['department_id'])['percentage'].max().reset_index()
# Climate change effects
if climate_change == True:
all_edge_fail_scenarios = all_edge_fail_scenarios.set_index(['hazard_type','department_id','department_name','province_name','probability'])
scenarios = list(set(all_edge_fail_scenarios.index.values.tolist()))
change_tup = []
for sc in scenarios:
perc = all_edge_fail_scenarios.loc[[sc], 'percentage'].values.tolist()
yrs = all_edge_fail_scenarios.loc[[sc], 'year'].values.tolist()
cl = all_edge_fail_scenarios.loc[[sc], 'climate_scenario'].values.tolist()
if 2016 not in yrs:
change_tup += list(zip([sc[0]]*len(cl),[sc[1]]*len(cl),[sc[2]]*len(cl),[sc[3]]*len(cl),[sc[4]]*len(cl),cl,yrs,perc,[1e9]*len(cl)))
elif len(cl) > 1:
vals = list(zip(cl,perc,yrs))
vals = sorted(vals, key=lambda pair: pair[-1])
change = np.array([p for (c,p,y) in vals[1:]]) - vals[0][1]
cl = [c for (c,p,y) in vals[1:]]
yrs = [y for (c,p,y) in vals[1:]]
change_tup += list(zip([sc[0]]*len(cl),[sc[1]]*len(cl),[sc[2]]*len(cl),[sc[3]]*len(cl),[sc[4]]*len(cl),cl,yrs,[vals[0][1]]*len(cl),change))
change_df = pd.DataFrame(change_tup,columns=['hazard_type','department_id','department_name','province_name','probability','climate_scenario','year','baseline','change'])
change_df.to_csv(os.path.join(config['paths']['output'],
'network_stats',
'{}_exposure_climate_change.csv'.format(mode)
),
index=False,
encoding='utf-8-sig'
)
# Change effects
change_df = change_df[change_df['probability'] == 1.0/rp]
change_df = change_df.set_index(hazard_cols)
scenarios = list(set(change_df.index.values.tolist()))
for sc in scenarios:
hazard_type = sc[0]
climate_scenario = sc[1]
year = sc[2]
percentage = change_df.loc[[sc], 'change'].values.tolist()
communes = change_df.loc[[sc], 'department_id'].values.tolist()
communes_df = pd.DataFrame(list(zip(communes,percentage)),columns=['department_id','change'])
commune_vals = pd.merge(zones,communes_df,how='left',on=['department_id']).fillna(0)
del percentage,communes,communes_df
proj = ccrs.PlateCarree()
ax = get_axes()
plot_basemap(ax, data_path)
scale_bar(ax, location=(0.8, 0.05))
plot_basemap_labels(ax, data_path, include_regions=True)
name = [c['name'] for c in plot_set if c['hazard'] == hazard_type][0]
for iter_,record in commune_vals.iterrows():
geom = record.geometry
region_val = record.change
if region_val:
cl = [c for c in range(len((change_ranges))) if region_val >= change_ranges[c][0] and region_val < change_ranges[c][1]]
if cl:
c = cl[0]
ax.add_geometries([geom], crs=proj, edgecolor='#ffffff',
facecolor=change_colors[c], label=change_labels[c])
else:
ax.add_geometries([geom], crs=proj, edgecolor='#ffffff',
facecolor=change_colors[-1], label=change_labels[-1])
# Legend
legend_handles = []
for c in range(len(change_colors)):
legend_handles.append(mpatches.Patch(color=change_colors[c], zorder=11,label=change_labels[c]))
ax.legend(
handles=legend_handles,
title='Percentage change in exposure',
loc=(0.5,0.2),
fancybox=True,
framealpha=1.0
)
climate_scenario = climate_scenario.replace('_',' ')
plt.title('{} - Percentage change for {}-year {} {} {}'.format(mode.title(),rp,name,climate_scenario,year), fontsize=9)
output_file = os.path.join(config['paths']['figures'],
'{}-{}-year-{}-{}-{}-exposure-change-percentage.png'.format(mode.replace(' ',''),rp,name,climate_scenario.replace('.',''),year))
save_fig(output_file)
plt.close()
# Absolute effects
all_edge_fail_scenarios = all_edge_fail_scenarios.reset_index()
all_edge_fail_scenarios = all_edge_fail_scenarios[(all_edge_fail_scenarios['probability'] == 1/rp) & (all_edge_fail_scenarios['climate_scenario'] == 'Baseline')]
all_edge_fail_scenarios = all_edge_fail_scenarios.set_index(hazard_cols)
scenarios = list(set(all_edge_fail_scenarios.index.values.tolist()))
for sc in scenarios:
hazard_type = sc[0]
climate_scenario = sc[1]
year = sc[2]
percentage = all_edge_fail_scenarios.loc[[sc], 'percentage'].values.tolist()
communes = all_edge_fail_scenarios.loc[[sc], 'department_id'].values.tolist()
communes_df = pd.DataFrame(list(zip(communes,percentage)),columns=['department_id','percentage'])
commune_vals = pd.merge(zones,communes_df,how='left',on=['department_id']).fillna(0)
del percentage,communes,communes_df
proj = ccrs.PlateCarree()
ax = get_axes()
plot_basemap(ax, data_path)
scale_bar(ax, location=(0.8, 0.05))
plot_basemap_labels(ax, data_path, include_regions=True)
colors = [c['color'] for c in plot_set if c['hazard'] == hazard_type][0]
name = [c['name'] for c in plot_set if c['hazard'] == hazard_type][0]
for iter_,record in commune_vals.iterrows():
geom = record.geometry
region_val = record.percentage
if region_val:
if region_val > 0 and region_val <= 10:
ax.add_geometries([geom], crs=proj, edgecolor='#ffffff',
facecolor=colors[0], label=labels[0])
elif region_val > 10 and region_val <= 20:
ax.add_geometries([geom], crs=proj, edgecolor='#ffffff',
facecolor=colors[1], label=labels[1])
if region_val > 20 and region_val <= 30:
ax.add_geometries([geom], crs=proj, edgecolor='#ffffff',
facecolor=colors[2], label=labels[2])
elif region_val > 30 and region_val <= 40:
ax.add_geometries([geom], crs=proj, edgecolor='#ffffff',
facecolor=colors[3], label=labels[3])
elif region_val > 40 and region_val <= 100:
ax.add_geometries([geom], crs=proj, edgecolor='#ffffff',
facecolor=colors[4], label=labels[4])
else:
ax.add_geometries([geom], crs=proj, edgecolor='#ffffff',
facecolor=colors[5], label=labels[5])
# Legend
legend_handles = []
for c in range(len(colors)):
legend_handles.append(mpatches.Patch(color=colors[c], label=labels[c]))
ax.legend(
handles=legend_handles,
title='Percentage exposure',
loc=(0.6,0.2),
fancybox=True,
framealpha=1.0
)
climate_scenario = climate_scenario.replace('_',' ')
plt.title('{} - Percentage exposure for {}-year {} {} {}'.format(mode.title(),rp,name,climate_scenario,year), fontsize=9)
output_file = os.path.join(config['paths']['figures'],
'{}-{}-year-{}-{}-{}-exposure-percentage.png'.format(mode.replace(' ',''),rp,name,climate_scenario.replace('.',''),year))
save_fig(output_file)
plt.close()
if __name__ == '__main__':
main()