The procedure Nested demand gap calculation calculates the relative deviation of the current demand weighted by the costs from the demand of the last iteration of a Nested demand procedure (Fundamentals: Nested demand gap calculation). Prerequisite for the calculation of the gap is that the values of the utilities in the Nested demand procedure are smaller than or equal to zero.
1. On the toolbar, click the 
button Open 'Procedure sequence' window.
The Procedure sequence window opens.
2. To the procedure sequence, at the position of your choice, add the Nested demand gap calculation procedure of the Demand model category (Setting up and starting the procedure sequence).
3. In the row of the added procedure, click on the button in the Reference object(s) column.
The Select Nested demand procedures window opens.
4. Select the procedure to which the Nested demand gap calculation procedure shall refer to.
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Note: Make sure that the option Save old result demand matrices for gap calculation has been selected in the settings of the selected procedure (Calculating demand with the Nested demand model). |
5. Confirm with OK.
The procedure selected is adopted into the Reference object(s) column.
6. Make sure the added procedure is highlighted. Then, in the Operations section, click the Edit button.
The Parameters: Nested demand gap calculation window opens.
7. Make the desired changes.
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Element |
Description |
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Save gap to network attribute |
Click the Note If the Nested demand procedure step selected in the Reference object(s) column was calculated using the model form "incremental", the demand matrices, containing the demand from the last iteration, must be assigned the values of the base case before the first gap calculation. |
button to select the attribute in which you want to save the gap. If no suitable attribute exists yet, 8. Confirm with OK.
9. Execute the procedure (Executing procedures in the procedure sequence).
The gap calculation is carried out.
