Viewing Simulations

The major results of simulation runs are presented in two graphs: "Population Size vs. Time" (Figure 10) and "Current Age Distribution" (Figure 11). These graphs are updated every time interval. If you watch the graph of population size as the simulation runs, you will notice that it automatically re-scales whenever necessary. It may take you several runs to get used to the unexpected sudden changes in the shape of this graph that occur during re-scaling.

If you are using a sex-differentiated model, you will see two population curves, and the current age distribution could be asymmetric.

Figure 10. The "Population Size vs. Time" graph displays either a graph or table of population size as it changes through time. The data can also be viewed in tabular form. The graph above is plotting population size for two trials.

Figure 11. The "Current Age Distribution" graph displays the numbers of individuals or the proportions of the population in each age class. In the example above, the "age pyramid" is divided into 20 age classes, each spanning 5 years. The bars at the bottom of the graph represent the youngest age classes. Those at the top represent the oldest age classes. By dragging the cursor over the graph at any time, you can change the shape of the current age pyramid. The data can also be viewed in tabular form.

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