Skip to contents

Assemble engine results in the downstream contract

Source: R/sim_results.R
sim_results.Rd

Equivalent of the Python engine's RInterface. State is held time-major (one environment per tick, each holding every channel); results are patch-major ([npatches, nticks]). The three trimming rules are not interchangeable and are reproduced exactly from model.py:82-165:

Usage

sim_results(state, par)

SIM_CHANNELS_TRIM_FIRST

SIM_CHANNELS_TRIM_LAST

SIM_CHANNELS_TRANSPOSE_ONLY

SIM_CHANNELS_PRECOMPUTED

SIM_CHANNELS_PASSTHROUGH

SIM_CHANNELS

SIM_CHANNELS_INTEGER

SIM_CHANNELS_DOUBLE

Arguments

state

State environment from the run loop.

par

Parameters from sim_params().

Value

Named list of [npatches, nticks] matrices.

Details

  • compartments, incidence, hazards, N, W drop the t = 0 seed row ([1:, :].T);

  • event counts (births, deaths, reported) drop the last row ([:-1, :].T), because they are written at tick rather than tick + 1;

  • doses and the precomputed beta/delta matrices are already nticks-shaped and are only transposed.

Storage mode is per field: counts are integer, rates and hazards are double. No dimnames – the Python return has none and no consumer reads any.