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- OzEnter DATA ENTRY
- ==================
-
-
- Introduction
- ------------
-
- Most data are entered into OzGIS as external data files. Examples are Census
- data and Census digitised boundaries. These files come from Census Bureaux,
- Mapping agencies, data supply companies or your own data-base systems.
- Some data can be prepared or modified with word processors or spreadsheets.
-
- The files are entered into the system via the OzEnter program which checks the
- data and writes them to internal files.
-
- All data files must have names that finish with the extension DAT.
- e.g. LONDON.DAT, A:SALES.DAT
-
- Often data files will need further processing by the OzData program before used
- for mapping e.g. attribute data may need manipulating by arithmetic expressions
- geographic line segments may need thinning and forming into polygons.
-
- The system comes with many of the system files already entered e.g. device
- files. The data files are also provided.
-
- Example
- -------
-
- You will often have a file of attribute data (such as population Census
- data) and a file of digitised boundary data for mapping:
-
- We will look at data for Far East Asia. There are two data files:
-
- FEA-G.DAT are the digitised boundary data, and
- FEA-A.DAT are the attribute data
-
- To to enter the data so it is checked and written into internal files:
-
- type
-
- cd \ozdemo
- ozenter
-
- 1. select the option to enter standard format geographic files
- give the input data file as fea-g
- give the output geographic file as fea (or the default if you like)
-
- 2. select the option to enter an attribute file
- give the input data file as fea-a
- give the output attribute file as fea (or the default if you like)
-
- 3. type F10 to exit
-
-