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- OzTerr
- ======
-
- Usually territories are to be developed from base zones according to some
- criterion; e.g. Sales territories should all have similar sales potential;
- e.g. School districts should have similar numbers of children.
-
- The operations are as follows.
-
- A base map is displayed: Usually this will be a standard geographic
- file (e.g. Melbourne postcodes). Basic OzGIS facilities are used
- to subset files if non-standard regions are required.
-
- Specification of territories: Each territory has a unique 10
- character name. Zones are assigned off the screen with the cursor.
- Zones can be moved between territories and deleted. Territories can
- be defined or deleted at any time.
-
- Specification of a base-map attribute file: Territory attributes are
- continually calculated by adding the values for the base zones in each
- territory. The derived values are quantised (usually sequential
- colour 121 class method), the territories coloured, and a legend and
- histogram of sorted values displayed.
-
- Zones can be shuffled according to the displayed territories attribute
- values to meet the assignment criteria while watching the legend
- and histogram.
-
- When territory assignment is complete, the definition is output as a
- combine file.
-
- OzData provides a facility for amalgamating attribute data for a combine
- file.
-
- The combine file can be used to amalgamate the base map geographic
- file zones to produce a new geographic file, where the new zones are
- the territories.
-
- The new geographic file and attribute data can be mapped
- by OzGIS in the standard way.
-
- Territory assignment can be iterated by displaying the base map as
- before, but using the combine file to set the initial territory
- definition. Similarly, if a basic territory assignment is know, it
- can be input as a combine data file and used to start the process.
-