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Directory Interchange Format (DIF)
Writer's Guide, Version 8
Current as of: September 2001
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Table of Contents
About DIFs
What is a DIF?
Some Tips on Writing DIFs
Sample DIFs
Annotated DIF Template
A Sample DIF
A Sample Skinny DIF
DIF Fields
Directory Entry Identifier (required)
Directory Entry Title (required)
Data Set Citation
Personnel
Discipline
Parameters (required)
Keyword
Sensor Name
Source Name
Temporal Coverage
Paleo Temporal Coverage
Data Set Progress
Spatial Coverage
Location
Data Resolution
Project
Quality
Access Constraints
Use Constraints
Data Set Language
Originating Center
Data Center (Name, Dataset ID, Contact Personnel) (required)
Distribution
Multimedia Sample
Reference
Summary (required)
Related URL
Parent DIF
IDN Node
DIF Creation Date
Last DIF Revision Date
DIF Revision History
Future DIF Review Date
Appendix B: Suggested Keyword Lists
Data Presentation Form Keywords
Data Set Progress Keywords
Data Set Language Keywords
Distribution Media Keywords
Distribution Format Keywords
Multimedia Sample Format Keywords
Appendix C: Procedures Related to this Document
Procedure for Reporting Errors
Procedure for Suggesting Changes
For information please contact:
The User Support Office, Global Change Master Directory
gcmduso@gcmd.gsfc.nasa.gov
This document should be cited as:
Directory Interchange Format (DIF) Writer's Guide, Version 8. 2001.
Global Change Master Directory. National Aeronautics and Space
Administration. [http://gcmd.nasa.gov/User/difguide].
Responsible NASA Official: Lola Olsen, olsen@gcmd.nasa.gov
Contact GCMD User Support for assistance.
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