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- 14. OzEnter DATA ENTRY
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- 14. 1 Introduction
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- 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.
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- This chapter describes the formats of external data files required by
- OzGIS and shows how to enter the example file provided with the system.
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- The files are entered into the system via the OzEnter program which checks the
- data and writes them to internal files.
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- All data files must have names that finish with the extension DAT.
- e.g. LONDON.DAT, SALES.DAT
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- 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.
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- Future versions of the OzGIS system may have incompatible internal file formats
- so always keep important data files.
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- The system comes with many of the system files already entered e.g. device
- files. The data files are also provided.
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