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The <Distribution> field describes media options, size, data format, and fees involved in distributing the data set.

  • <Distribution_Media>The media options for the user receiving the data.
  • <Distribution_Size>An approximate size (in KB, MB or GB) for the entire data set. Specify if data are compressed and the method of compression.
  • <Distribution_Format>The data format used to distribute the data.
  • <Fees>Cost of <Distribution_Media> or distribution costs if any. Specify if there are no costs.
    <Distribution_Media>Text up to 80 characters</Distribution_Media>
    <Distribution_Size>Text up to 80 characters</Distribution_Size>
    <Distribution_Format>Text up to 80 characters
    <Fees>Text up to 80 characters</Fees>
  • Characters may be selected from the UTF-8 character set.
  • The <Distribution> field is highly recommended and may be repeated.
  • <Distribution> subfields may only appear once within <Distribution>.
  • Keywords for <Distribution_Media> may be selected from the Suggested Distribution Media Keywords List.
  • Keywords for <Distribution_Format> may be selected from the Suggested Distribution Format Keywords List.
    <Distribution_Size>25 MB</Distribution_Size>
    <Distribution_Format>ESRI shapefile</Distribution_Format>


This document should be cited as:
Directory Interchange Format (DIF) Writer's Guide, 2018.
Global Change Master Directory.
National Aeronautics and Space Administration.

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