Individual Calculation for Multi-Point Routing

This performs an individual route calculation from each FROM point to every TO point.

Select Applications > Routes > Multi-Point Routing > Individual Calculations. Click Next.
Use the drop-down menus to choose the From and To overlays. This can be the same or different overlays. In this example the same overlay Public Houses is used.
Select the measurement option. This entry depends on the data being used (ITN, Meridian 2 or your Own expression as set in the Settings dialog).

Note: None - draw straight lines between end-points is the shortest distance as the crow flies between the two points.

In this example you see the Shortest Distance is the red line and the None - draw straight lines between end-points is the green line.
Click Next to open the Select unique names and location options.
The FROM overlay and TO overlay will show the selections specified in the previous dialog.

Option	Description
Unique Names	Select the required name from the drop-down list. The drop-down shows all string$ schema items.
Location: Geometric origin / centroid of item	Use this option if the location is the Geometric origin or centroid of the item.
Choose X & Y properties	Enter properties containing valid X and Y data.

Click Next to open the Select Route Points dialog.
Select the FROM and TO locations and click Next.

Note: You may see these error messages. (1) when an individual item is too far from the network and (2) if All have been selected.

To bypass these messages, ensure the roads network is visible in the map window.

More commonly these are seen if the Snap radius setting in the Select bulk calculation measurement options dialog is too small.

You can still continue with the current selection(s) and ignore those that are excluded by distance or go back and adjust the Snap radius.

If you click Yes to continue, you will see a list of locations too far from the network. In this case resetting the Snap radius will reduce this list (probably to zero).
When all TO and FROM locations have been selected and any error messages resolved click Next.
The Perform route calculations dialog will be displayed:

Option	Description
Ignore routes where km between end-points > x	It is important to understand that this limit is applied on the basis of the straight line between the selected FROM and TO points, i.e. ‘as the crow flies’, and not the actual cost of the route as calculated by the routing measurement.
Process just the geographically closest	This option will cause, for each selected FROM point, only routes to the closest N selected TO points to be calculated. But again note that this is based on the straight line between the From and To points and not the route cost as calculated by the routing measurement.
Create overlay of calculated routes	Check this tickbox to create an overlay, called Routes, of the calculated routes.
Output CSV File(s): All results in one file	Creates the route data as a single CSV file. Click Browse to locate the target file.
One file per From point	Creates the route data as a number of CSV files, one per FROM point. Click Browse to locate the target folder.

Click Finish.

The routing calculation will now be carried out, The progress bar will be shown on the Perform route calculations dialog:

The calculations can be cancelled but remember the cancel button will only interrupt the processing after the current route has been calculated.

The following map window display is the possible result of a Shortest Distance setting (Select overlays for multi-point routing dialog) using the FROM and TO locations in the Select Route Points dialog above.