List of Supported Formats

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• Canadian Council on Geomatics Interchange Format (CCOGIF) Reader
  • Quick Facts
  • Reader Parameters
  • Feature Representation
    • Metadata Features
      • Volume Descriptor Record
      • User Fixed-Length Record
      • Data Set Header Record
      • Entity Metadata Record
      • Data Group Header Record
      • Data Theme Header Record
      • Attribute Descriptor Record
    • Entity Features
      • Point Entity Features
      • Line Entity Features
      • Area Entity Features
  • Defining Volume Structure
    • Theme Definition
    • Specifying Metadata Records
    • Volume Descriptor Record Contents
      • User Fixed-Length Record Contents
      • Data Set Header Record Contents
      • Entity Metadata Record Contents
    • Entity Record Contents

Defining Volume Structure

The contents of a CCOGIF volume follow a firm structure, provided through the use of metadata records. The sequence and contents of these metadata records is crucial to the correctness of a CCOGIF volume. The CCOGIF writer provides a mechanism for the mapping file to explicitly define the required records and their contents.

There are six areas where the CCOGIF writer provides direct control of the generated CCOGIF records:

• Definition and order of data themes within a data group
• Specification of metadata records, such as:
  • the contents of Volume Descriptor Record (VDR)
  • the contents of User Fixed-Length Record (UFLR)
  • the contents of Data Set Header Record (DSHR)
  • the contents of Entity Metadata Record (EMDR)
• Specification of the contents of entity records
• The following sections cover each of these in more detail.