Configuration

De-Duplication: Change radius

Upon importing the data, a de-duplication process runs. By default, within a 500 meter radius and the same event date, a duplicate is detected. This automatic duplicate check can have certain drawbacks. As mentioned in the Limitations section, this might lead to imperfect duplicate detection as positional uncertainty must be assumed. More practically, point geometries might have a higher positional uncertainty than the default 500 meter radius. Thus, one might want to change the radius.

After cloning the project, make changes to both functions find_duplicate() and is_duplicated() in src/db/duplicates.py. For example, increase the search radius from 500 to 1000 meters:

def find_duplicate(  
    session: Session,
    landslide_date: date,
    landslide_geom: WKTElement,
    search_radius_meters: int = 500,  
    search_radius_meters: int = 1000,  
) -> Landslides | None:

...

def is_duplicated(  
    session: Session,
    landslide_date: date,
    landslide_geom: WKTElement,
    search_radius_meters: int = 500,  
    search_radius_meters: int = 1000,  
) -> bool:

...

After applying the changes, simply follow the quick start guide.

PostGIS port

By default, the PostGIS data base is exposed on port 5432. To change the port navigate to the .env file and simply change the POSTGRES_PORT variable. This example, changes the port from the default 5432 to 5173.

POSTGRES_USER=postgres
POSTGRES_PASSWORD=mysecretpassword
POSTGRES_HOST=localhost
POSTGRES_PORT=5432  
POSTGRES_PORT=5173  
POSTGRES_DB=landslides

INFO

docker-compose.yaml will pick up the new POSTGRES_PORT variable. Be sure, to restart the db and api service!

docker compose restart db api