GeoPackage Files
In a GRAPE study, the following types of data can be georeferenced:
- airport structure (airports, runways, routes)
- performance run outputs
- noise run outputs (cumulative metrics)
GRAPE can export this data in the GeoPackage format. The exported layers types and attributes are specified in the following sections.
Airport Structure
The airport structure of all airports defined in a study can be exported via Edit->Export->Airports. The following layers are exported:
| Layer | Type | Description | Attributes |
|---|---|---|---|
| airports | POINT | Airport reference location | airport |
| runways_points | POINT | Runway reference location | airport, runway |
| runways_lines | LINESTRING | Runway line (based on reference location, length and heading) | airport, runway |
| routes | LINESTRING | Output of each route as calculated on the WGS84 coordinate system | airport, runway, route, operation, type |
Performance Run Outputs
After running a performance run, the outputs can be visualized in a tabular form for each operation. In the Scenarios panel, select a performance run which has the status Done, open the Output collapsible, click on the orange button and select Export as .gpkg. A GeoPackage file will be created with a single layer:
| Layer | Type | Description | Attributes |
|---|---|---|---|
| performance_run_output | LINESTRING | Performance output of each operation | name, operation, type, time, count, fleet id |
Noise Run Outputs
After running a noise run which has cumulative metrics defined, the outputs can be visualised in a tabular form for each cumulative metric defined. In the Scenarios panel, select a noise run which has the status Done, open the Output Cumulative Metric collapsible, click the orange button and select Export as .gpkg. A GeoPackage file will be created with the following layers:
| Layer | Type | Description | Attributes |
|---|---|---|---|
| noise_run_receptors | POINT | Receptors for which noise was calculated | |
| noise_run_cumulative_noise | POINT | Cumulative metric output | cumulative_metric, count, count_weighted, maximum_absolute_db, maximum_average_db, exposure_db |
| noise_run_cumulative_number_above | POINT | Cumulative metric number above output | cumulative_metric, threshold, number |
The geographical representation of all three layers is identical (the receptors at which noise is calculated). Only the attributes change.