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Cutting a scenario

In order to cut a scenario, it is possible to call the respective script from Eclipse/IntelliJ, or from the command line. In the latter case, please follow the instructions from the section above to package a jar file.

The relevant run script is then org.eqasim.scenario.cutter.RunScenarioCutter. Note that either the switzerland or ile_de_france jar can be used. Since the script is located in the core package, there is no scenario-specific functionality in the cutter. We simply don't create an additional jar for the core package since all the functionality is automatically included in the scenario-specific jars.

The script expects a number of arguments:

java -Xmx100G -cp /path/to/switzerland-1.0.0.jar org.eqasim.core.scenario.cutter.RunScenarioCutter
--config-path /path/to/ile_de_france_config.xml
--output-path /path/to/output/paris_10pct
--extent-path /path/to/paris_shapefile.shp
--config:plans.inputPlansFile /path/to/output_plans.xml.gz
--prefix paris_
--threads 24

First, the path to the reference scenario must be given by providing its config file. Second, an output path needs to be specified. Third, the path to a shape file must be provided. This shape file determines the extent of the cut region. Make sure that it is a compact shape without holes. The shape file should only contain a single polygon feature. Finally, a prefix can be specified that defines according to which pattern files will be written to the output folder. In this case, we would have a paris_population.xml.gz, paris_facilities.xml.gz, etc.

The generated scenario can then be run. For that, you can use the same scripts as for the reference sceanrio. If you cut a Zurich scenario from Switzerland, the switzerland module can still be used to run the scenario. The same goes for the Paris / Ile-de-France case.

To get started, the gis/ folder in this repository contains a number of common shape files:

  • zurich_city.shp The 12 districts of Zurich city
  • zurich.shp Zurich city and several high density areas in the surroundings
  • zurich_20km.shp Zurich city and surroundings, plus a 20km buffer
  • paris.shp City area of Paris (20 arrondissements)
  • paris_20km.shp City area of Paris, plus a 20km buffer

Note that the shape files must be given in the correct projection. For Switzerland this is EPSG:2056 and for France it is EPSG:2154.

Scenario Shapes