Single event

This is a an example of running a tiny single event FIAT model.

First of all, let’s make sure that there is some actual testdata.

! python ../../.testdata/create_test_data.py

Now that we have some testdata, let’s take a look at the settings file.

with open("../../.testdata/geom_event.toml", "r") as r:
    settings = r.read()
print(settings)
[global]
model = "geom"

[global.srs]
value = "EPSG:4326"

[output]
path = "output/geom_event"

[output.csv]
name1 = "output.csv"

[output.geom]
name1 = "spatial.gpkg"

[hazard]
file = "hazard/event_map.nc"
risk = false
elevation_reference = "DEM"

[hazard.settings]
srs = "EPSG:4326"

[exposure.csv]
file = "exposure/spatial.csv"

[exposure.geom]
file1 = "exposure/spatial.geojson"

[exposure.geom.settings]
srs = "EPSG:4326"

[vulnerability]
file = "vulnerability/vulnerability_curves.csv"
step_size = 0.01

Now let’s execute the model!

! fiat run ../../.testdata/geom_event.toml

###############################################################

        #########    ##          ##      ##############
        ##           ##         ####         ######
        ##           ##         ####           ##
        ##           ##        ##  ##          ##
        ######       ##        ##  ##          ##
        ##           ##       ########         ##
        ##           ##      ##      ##        ##
        ##           ##     ##        ##       ##
        ##           ##    ##          ##      ##

###############################################################

                Fast Impact Assessment Tool
                © Deltares

2025-04-01 08:59:51 INFO    Delft-Fiat version: 0.3.1
2025-04-01 08:59:51 INFO    Using settings from '/home/runner/work/Delft-FIAT/Delft-FIAT/docs/examples/../../.testdata/geom_event.toml'
2025-04-01 08:59:51 INFO    Using number of threads: 1
2025-04-01 08:59:51 INFO    Model srs set to: 'EPSG:4326'
2025-04-01 08:59:51 INFO    Reading hazard data ('event_map.nc')
2025-04-01 08:59:51 INFO    Executing hazard checks...
2025-04-01 08:59:51 WARNING Setting the model srs from the hazard data.
2025-04-01 08:59:51 INFO    Model srs set to: 'EPSG:4326'
2025-04-01 08:59:51 INFO    Reading vulnerability curves ('vulnerability_curves.csv')
2025-04-01 08:59:51 INFO    Executing vulnerability checks...
2025-04-01 08:59:51 INFO    Upscaling vulnerability curves, using a step size of: 0.01
2025-04-01 08:59:51 INFO    Reading exposure geometry 'file1' ('spatial.geojson')
2025-04-01 08:59:51 INFO    Executing exposure geometry checks...
2025-04-01 08:59:51 INFO    Reading exposure data ('spatial.csv')
2025-04-01 08:59:51 INFO    Executing exposure data checks...
2025-04-01 08:59:51 INFO    Starting the calculations
2025-04-01 08:59:51 INFO    Busy...
2025-04-01 08:59:52 INFO    Calculations time: 0.05 seconds
2025-04-01 08:59:52 INFO    Output generated in: '/home/runner/work/Delft-FIAT/Delft-FIAT/docs/examples/../../.testdata/output/geom_event'
2025-04-01 08:59:52 INFO    Geom calculation are done!

Let’s take a quick look at the output.

# Import a method
from fiat.fio import open_csv
from pathlib import Path

# check the output
out = open_csv(Path("../../.testdata/output/geom_event", "output.csv"), index="object_id")
print(out.columns)
('extract_method', 'ground_flht', 'ground_elevtn', 'fn_damage_structure', 'max_damage_structure', 'inun_depth', 'red_fact', 'damage_structure', 'total_damage')

Assert that the output is what we would expect.

assert float(out[2, "total_damage"]) == 740
assert float(out[3, "total_damage"]) == 1038
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