PDS
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'''PDS''' ('''Planetary Data System''') is a file format used by NASA to store images and associated scientific data. | '''PDS''' ('''Planetary Data System''') is a file format used by NASA to store images and associated scientific data. | ||
| − | A PDS document consists of a | + | A PDS document consists of a "label" section, and a binary data section. The sections may be combined into one file (which begins with the label), or stored in two separate files. |
== Identification == | == Identification == | ||
| − | A PDS label | + | PDS labels can be encoded in either a "FIXED_LENGTH" format or a "VARIABLE_LENGTH" format. FIXED_LENGTH format is text-only, and items usually end with a carriage-return + newline. VARIABLE_LENGTH format is mostly text, but contains binary data before each item, to indicate its length. |
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| + | A PDS version 2 label begins with an item that looks like "... = SFDU_LABEL". | ||
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| + | A PDS version 3 label begins with a "PDS_VERSION_ID = PDS3" item. | ||
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| + | Note that PDS label files can be used with file formats other than PDS, such as [[VICAR]]. | ||
== See also == | == See also == | ||
Revision as of 20:54, 3 April 2013
Contents |
Overview
PDS (Planetary Data System) is a file format used by NASA to store images and associated scientific data.
A PDS document consists of a "label" section, and a binary data section. The sections may be combined into one file (which begins with the label), or stored in two separate files.
Identification
PDS labels can be encoded in either a "FIXED_LENGTH" format or a "VARIABLE_LENGTH" format. FIXED_LENGTH format is text-only, and items usually end with a carriage-return + newline. VARIABLE_LENGTH format is mostly text, but contains binary data before each item, to indicate its length.
A PDS version 2 label begins with an item that looks like "... = SFDU_LABEL".
A PDS version 3 label begins with a "PDS_VERSION_ID = PDS3" item.
Note that PDS label files can be used with file formats other than PDS, such as VICAR.
See also
Sample files
- http://pds-imaging.jpl.nasa.gov/data/messenger/MSGRMDS_1001/DATA/
- http://atmos.nmsu.edu/PDS/review/Jupiter/AMTN/JUPITER/RAW/
