Geometry
A user can specify one or multiple geometry files in the settings.toml. It is advisable to give descriptive names to the geometry files, e.g., buildings.gpkg or roads.gpkg. Most-used file types are GeoPackages or Shapefiles but more file types are accepted as can be seen at the bottom of this page. All geometry files must have an attribute object_id. These need to be unique over all geometry files if a csv file with exposure data is provided and corresponding to the object_is’s in the provided csv file.
If no csv file provided with the exposure information, that information needs to be present in the geometry files(s) themselves. An overview of all the required input is shown here.
When using a GeoPackage file with roads containing object_ids 1-100, a second GeoPackage file with building footprints should contain object_ids from 101-n. Then, if applicable, those IDs should link to the corresponding rows and IDs in the exposure CSV file.
When providing a polygon or line geometry file, a user can choose to use the area extraction method (‘extraction method’ = ‘area’, see here) for considering water levels or depths over the whole area of the asset. This can be more appropriate than point estimates for example for large buildings.
Assets cannot be partially or fully outside the hazard map extent! FIAT will stop if it detects any.
Supported data formats
An overview of supported formats is presented here