BS 7567-1:1992

Committees responsible
Foreword
Specification
Section 1. General
1.1 Scope
1.2 Normative references
1.3 Definitions
1.4 Editorial conventions particular to this standard
1.5 Convention in record and field formats
Section 2. NTF levels and the vector data models
2.1 The family of models
2.2 NTF levels
2.3 Rules of Association
2.4 Semantic Relationships
2.5 Elements of the NTF Models
Section 3. Transfer file structure
3.1 General transfer structure
3.2 Volume header records
3.3 Database description records
3.4 Section records
Section 4. Record syntax
4.1 General
4.2 Syntax of common records
4.3 Syntax of records for levels 1 and 2
4.4 Syntax of records for level 3
4.5 Syntax of records for level 4
4.6 Records for level 5
Annexes
A (informative) Objectives of Working Group on
     national standards
B (informative) External feature files
C (informative) Codelist record (examples)
D (informative) Interpreting associated records and
     fields
Figures
1 Simple spaghetti model (level 1)
2 Simple spaghetti data model (level 2)
3 Complex spaghetti data model (level 3)
4 Generic topological model
5 Link and node data model (level 3)
6 Partial topological data model (level 3)
7 Full topological data model (level 4)
8 The logical structure
9 Physical file structure
10 Record structure for levels 1 and 2
11 Structure of level 3 feature records
12 Structure of level 3 feature records (continued)
13 Structure of level 3 geometry and topology records
14 Structure of level 4 records
15 Structure of levels 3 and 4 text records
16 Character position record
17 Digitized position indicators
18 Digitized position indicators
19 Relationship between image and grid coordinates
List of references

Describes a neutral transfer format, NTF, which includes media-independent file and data record descriptions for information exchange; description of data elements, vectors and arrays containing character strings and numeric forms, and relationships between data elements; volume and header information which allows data interchange with minimal specific external description and five levels of interchange, related to complexity of data. NTF facilitates transfer of spatial and related aspatial information between computer systems such as digital topographic maps, digital terrain models and geographic database contents. Provides the means for describing contents of data records, but does not define contents.