Making demand adjustments

1. Open the appropriate network.

   The network must be checked out if adjustments are to be made. Otherwise, a read-only view of the demand summary will be displayed.

2. If required, associate an alternative demand with the network.

   If alternative demand data is included, it will be possible to view and edit the alternative demand in the view.

3. If required, associate a set of control data with the network.

   If checked out control data is included, it will be possible to adjust the Flow Factor fields for transfer nodes.

4. If needed, open a demand diagram.

   If there is no current demand diagram, values in the profile average column are set to an assumed value of 1 and global changes in terms of assignment cannot be made on the demand categories. A Demand Diagram can be opened later if needed.

5. Optionally, make a network selection, (that is, select some or all of the nodes which have demand on the GeoPlan window or on the Node and Reservoir grids.)

   If nodes are not selected, the option of including all nodes is given.

   Nodes that have demand are shown with the symbol on the GeoPlan. Other nodes have the symbol.

   To select nodes with demand on the Node and Reservoir grids, sort the grids on the Total Demand column, then select nodes and reservoirs with total demand greater than zero.

   A geographical area selection can be made using the polygon select tool. All nodes with demand inside the polygon will be included.

6. Select Window | Grid windows | New demand adjustment window, or click the icon from the Grid windows dropdown on the Windows toolbar.

   This displays the Demand Adjustment view.

The right half of the Demand Adjustment view allows adjustments to be made to demand at the selected nodes.

1. Enter a new value for specific consumption in the Override column.

   When the change is applied, the specific consumption for all nodes using this demand category will be changed to the value that has been entered.

   To prevent the values being changed, set the value back to 0.0

2. Scale the values by using the Scale or Adjusted columns.

   Entering a value in Scale will update the Adjusted column and vice versa.

   When the change is applied, the specific consumption for all nodes using this demand category will be adjusted using the scaling factor.

   The Adjusted Total and the Category Total values are updated accordingly (land use demand, if present, is unaffected by the scaling).

The right half of the Demand Adjustment view allows adjustments to be made to demand at the selected nodes.

• Scale the values by using the Scale or Adjusted columns.

  Entering a value in Scale will update the Adjusted column and vice versa.

  When the change is applied, the direct demand for all nodes using this demand category will be adjusted using the scaling factor.

  The Adjusted Total and the Category Total values are updated accordingly (land use demand, if present, is unaffected by the scaling).

The specific demand and direct demand for all categories can be scaled using fields in the bottom right corner.

• Scale the values by using the Total Demand Scaling or Adjusted Total Demand columns.

  Entering a value in Total Demand Scaling will update the Adjusted Total Demand column and vice versa.

  The scaling factor is used to adjust all specific consumption and direct demand for the selected nodes when changes are applied.

Demand categories can be set up to represent leakage.

• On the Demand Diagram editor, check the Leakage checkbox.

Leakage categories are shown separately on the view, with separate totals.

If both demand categories and leakage categories are displayed on the view, two additional rows are added that separate the two types of demand. These additional rows show the total number of rows for that type, and you can click these rows to show or hide the rows below.

If there is control data associated with your network, and the control data is checked out, the Flow Factor can be adjusted for any transfer nodes in the network.

The Flow Factor is a scaling factor used in conjunction with the Time Varying Flows table to produce actual flow values.

This data is set on the Transfer Node Flow Control page of the Transfer Node property sheet.

If a demand diagram is included, the view will allow changes to be made to demand categories.

To include a demand diagram:

• If a demand diagram is open when the Demand Adjustment view is opened, InfoWorks WS Pro assumes that the demand diagram is to be included. If there is more than one demand diagram open, InfoWorks WS Pro uses the current demand diagram.
• If the Demand Adjustment view is already open, add a demand diagram by opening it and then clicking the Refresh Demand Diagram button.
• You can change the demand diagram by closing the existing one, opening another, and then clicking the Refresh Demand Diagram button. A warning that the demand diagram has changed will appear. You must close the existing demand diagram or InfoWorks WS Pro will assume that you want to incorporate changes from the existing diagram.

Notes:

• If there is no current demand diagram, the values in the profile average column will be set to an assumed value of 1.
• The New Category column allows changes to be made to the demand category for all nodes that use an existing category. Choose the new category from the dropdown list. When changes are applied, all nodes using the existing category will have the table entry changed to the new category.
• The Profile Average column displays read-only information about the profile for the currently selected demand category.

  The value is the average for the profile. Ideally the profile will be normalised (average = 1.0) but this is not essential.

  The colours give additional information:

• Green means the profile is normalised
• Yellow means the value is fixed
• Pink means the profile is not normalised
• Red means that the demand category does not exist in the currently used demand diagram
• If changes are made to the currently used demand diagram, click the Refresh Demand Diagram button to update the view with these changes.

To apply changes:

• Click the Apply button.

If the view is closed without applying changes, they will be lost.

If more than one scaling method is used, they will all be applied in the following order:

1. Override (for specific consumption)
2. Scaling for individual demand categories
3. Global scaling factor (Total Demand Scaling)

To select transfer nodes on the GeoPlan window from the Demand Adjustment view:

• Click a row in the Transfer Node grid of the Demand Adjustment View, then click the Select and find Transfer Node button.

Alternatively:

• Right-click a row in the Transfer Node grid of the Demand Adjustment view and choose Select and find transfer node from the context menu.

The GeoPlan window will zoom to the selected transfer node.

You can select nodes on the GeoPlan window that have demand assigned to them associated with a demand category chosen from the Demand Adjustment view.

To select the nodes:

• Click a category (in the Category column) in the Demand Adjustment view, then click the Select all Nodes with Demand in Category button.

Alternatively:

• Right-click the category and choose Select all nodes with demand in category from the context menu.

All nodes in the current Demand Adjustment selection with the chosen demand category assigned to them will be highlighted in the GeoPlan window.

To graph profiles of demand categories from the Demand Adjustment view:

1. Select the demand categories to be graphed by highlighting the rows in the Demand Adjustment grid.
2. Click the Graph Profiles of Selected Categories button, or right-click the grid and select Graph selected categories from the context menu.

A graph of the selected demand category profiles will be displayed.

The entire contents of the Demand Adjustment view can be copied onto the clipboard by:

• choosing Copy from the Edit menu, or
• using Ctrl-C on the keyboard, or
• clicking the toolbar button

The view contents are copied with all the column formatting.

Data can be pasted directly into Microsoft Excel and many other packages, such as Microsoft Word or Notepad.