Ordered List Item

1. Download the file soil_dose.eco and open it in Ecolego by clicking the button, or by selecting File | Open from the Menu bar.
2. The agricultural sub-system has a transfer named “Deposition”. The deposition rate is defined as a parameter, making it impossible to run a simulation with a time-varying deposition rate – for instance contamination during a limited time. You will create a General Variable that allows different ways of entering values for deposition.
3. Open the sub-system Agricultural Land.
4. Rename the parameter depRate to depRate_constant.Create a lookup table, call it depRate_lookup. Assign a default value of 0.
5. Create a General Variable.
6. Edit the General Variable.
7. Name it “depRate”.
8. Make the General Variable a vector (dimension 1-dependency)
9. In the list Available objects, move the Parameter depRate_constant and the Lookup Table depRate_timeseries to the selected list using the > button.
10. Select the depRate_constant in the -Default- Selected field above. Click Ok.

Edit the Transfer Deposition. Choose the Values tab. Replace the Parameter depRate_constant with the General Variable depRate in the Expression field.

Next

• Packaging the Sub-systems (3/5)

Previous

• Re-useable components (1/5)

References

• Back to Tutorials
• Home