Examining the New Model

  1. Attach a Table node to the new Time Series model nugget on the canvas.
  2. Open the Table node and click Run.

    The new model still forecasts three months ahead because you're reusing the stored settings. However, this time it forecasts April through June (on lines 64 to 66) because the estimation period now ends in March instead of January.

    Figure 1. Table showing new forecast
    Table showing new forecast
  3. Attach a Time Plot graph node to the Time Series model nugget.

    This time we'll use the time plot display designed especially for time series models.

  4. On the Plot tab, set the X axis label to Custom, and select Date_.
  5. For the Plot, choose the Selected Time Series models option.
  6. From the Series list, click the field selector button, select the $TS-Market_4 field, and click OK to add it to the list.
    Figure 2. Specifying fields to plot
    Specifying fields to plot
  7. Click Run.

Now you have a graph that shows the actual sales for Market_4 up to March 2004, together with the forecast (Predicted) sales and the confidence interval (indicated by the blue shaded area) up to June 2004.

As in the first example, the forecast values follow the actual data closely throughout the time period, indicating once again that you have a good model.

Figure 3. Forecast extended to June
Forecast extended to June

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