Sim is the model. It stores inputs and processes them into outputs. Inputs are spatial election model geometries and election options. Processing is casting votes and applying a social choice function. Outputs are the election results.

See SimOld for the old documentation for sim.

• Parent page: Architecture
• Child pages: Commander, Entities, SimMode

Sim

Sim is composed of components.

• Changes keeps a list of changes to the Sim.
• Commander keeps track of commands sent to the Sim and stores them as a configuration. Undo and redo use these commands. Commander is like a middleman.
• Entities are geometric objects representing voters and candidates.
• SimOptions are outside of the election and include: mode and dimension.
• ElectionOptionsMan manages optionsBag. The optionsBag contains many options, including for sampling, geography, sequences, polling, and elections.
• DistrictGeometry creates geometries for voter districts. It does so by providing a modification of voter positions over a geographical space in tracts.
• SimMode is where the election happens and handles the processing of inputs geometries, options, and changes to output data structures.
• Pub allows the ViewMode to attach to the SimMode.