Stigmery / Docs / Plots & monitors

Plots & monitors

You need to see what is happening in a model. Metrics, plots and monitors show it.

Metrics

A metric is a named expression for the whole model, worked out each tick. Metrics live in model.metrics. Plots and monitors show them.

sheep_count:   count(agents_of_type('sheep'))
grass_total:   sum(all_patches().map(p => p.grass))

Plots

A plot draws one or more metrics over time. Each line is a pen, and you choose its colour. Plots are in the Observation panel on the Interface tab.

Monitors

A monitor shows the current value of one metric in big numbers. Use one for a single number, such as the population or the total energy.

Exporting

Open the library and click the ⬇ icon on the model's row. You get the whole model as a JSON file. Exporting a run's metrics as CSV is planned.