Step 9. Adding Charts
You can also observe how the values of variables change during the simulation using charts. Namely, we want to examine the adopter and potential adopters populations dynamics. We will also add a chart to show how the adoption rate changes in our
model.
Draw a time plot displaying adopter and potential adopter population pools
- Drag the
Time Plot
element from the
Analysis
palette onto the graphical editor.
- Resize it as shown on the figure.
- Go to the
Properties
view.
- Open the
Data
section of the
Properties
and specify two data items to be displayed on the time plot.
- To add data item, click the
Add data item
button and define settings for this data item in the property section above. Type
PotentialAdopters
in the
Value
field. Specify the item's title in the
Title
edit box:
Potential adopters. It will be displayed in the legend displayed for this data item.
- Add another data item with
Value
Adopters
in the same way.
- Set up the chart’s time diapason. Open the
Scale
section of the properties and type 8 in the
Time window
edit box (so the chart will display all the simulation run).
- Define how the plot will be updated with new data set values. Open the
Data update
section of the properties, choose
Update automatically
option and specify the update rate in the
Recurrence time
edit box to the right:
0.1.
Now you can run the model and examine the trend of potential adopter and adopter populations over time. You will see classic S-shaped diffusion curves.

Now we will create a chart to show how the adoption rate changes in our model.
Draw a time plot displaying adoption rate
- Create one more time plot in the same way:

- Configure this plot to display
AdoptionRate:

Run the model. You will see classic bell-shaped curve.

Step 8. Running the model
Step 10. Modeling replacement purchases