Compare two stock-and-flow models

Compares the structure, equations, and simulation settings of two stockflow models.

Usage

compare_models(sfm1, sfm2)

Arguments

sfm1

A stock-and-flow model of class stockflow.

sfm2

A stock-and-flow model of class stockflow.

Value

An object of class compare_stockflow (a list) containing:

labels

Names of the two model objects (captured expressions).

added

Variables present in sfm2 but not sfm1.

removed

Variables present in sfm1 but not sfm2.

type_changed

Variables with different types.

eqn_changed

Variables with different equations.

sim_settings_diff

Simulation settings that differ.

properties

Per-model counts of variables by type.

See also

simulate(), summary()

Examples

sfm1 <- stockflow("sir")
sfm2 <- stock(sfm1, "susceptible", eqn = 0.5)
compare_models(sfm1, sfm2)
#> 
#> ── Stock-and-Flow Comparison: sfm1 vs sfm2 ─────────────────────────────────────
#> 
#> ── Structural Differences ──
#> ! Equation changed: `susceptible`: `99999` → `0.5`
#> 
#> ── Simulation Settings ──
#> ✔ Identical
#> 
#> ── Model Properties ──
#> Stocks 3 3
#> Flows 2 2
#> Auxiliaries 0 0
#> Constants 4 4
#> Lookups 0 0