Spatial Reference Systems (SRS) are a way to link coordinates to a reference, so that objects whose coordinates are expressed in different systems can be displayed in the same manager.

JViews Maps features, or generally speaking graphic objects on maps, are representation of real objects. These map features have to be linked to real-life objects, and this is performed by attaching the attributes to the map features. These attributes can be a location, a time, or any descriptive quality or quantity. For example, you can describe the position of a restaurant either using its coordinates (The restaurant coordinates are 2D28'30''E, 48D59'05''N), or a description (The restaurant is at the crossing of X and Y streets, on the same walkway as the cafe). This link between objects and their real life counterpart is called a reference system.