1. Create a new CoordinateReferenceSystem from a reference code

CTS includes registries that contain the definition of the main Coordinate Reference Systems used in the world. CTS can retrieve these CRS simply by their reference code (for instance : "EPSG:4326" for the Geographic Coordinate System corresponding to WGS84 datum).

This pseudo-code explains how to create a new CoordinateReferenceSystem using this method.

// Create a new CRSFactory, a necessary element to create a CRS without defining one by one all its components
CRSFactory cRSFactory = new CRSFactory();

// Add the appropriate registry to the CRSFactory's registry manager. Here the EPSG registry is used.
RegistryManager registryManager = cRSFactory.getRegistryManager();
registryManager.addRegistry(new EPSGRegistry());

// CTS will read the EPSG registry seeking the 4326 code, when it finds it,
// it will create a CoordinateReferenceSystem using the parameters found in the registry.
CoordinateReferenceSystem crs = cRSFactory.getCRS("EPSG:4326");

The registries used by CTS can be found [here] (https://github.com/orbisgis/CTS/tree/master/src/main/resources/org/cts/registry).