Defining hare population as a function of time

1. Select Hares at start. Click on the key icon to open the Attribute panel. Click on the Description field, type ‘The hare population at the start of each time period.’ Press alt+enter to save entry

2. Select Definition from the Attribute popup menu. Click on the expr popup menu, select ‘other’. Object finder window should appear.

3. Select ‘Special’ from the Library popup menu.

4. Select Dynamic to open parameter box for Dynamic function(). Click on the Dynamic field. Type ‘100, Hares_at_end[Time-1]*(1+Hare_birth_rate)’. Click ‘ok’ button.

5. Press alt+enter to accept the definition.

6. You should have this result.

7. Select ‘Hares at end’. Select ‘Description’ from the Attribute popup menu. Type ‘The hare population at the end of each time period.’

8. Select ‘Definition’ from the Attribute popup menu. Click on the definition field. Inputs popup menu should appear. Select ‘Hares at start’.

10. Click on the ‘Result’ button. A result graph window should appear.