PDS_VERSION_ID = PDS3
RECORD_TYPE = STREAM
OBJECT = TEXT
PUBLICATION_DATE = 2016-10-24
NOTE = "Description of the INDEX
directory contents."
END_OBJECT = TEXT
END
INDEX Directory Contents
The INDEX directory contains tabular index files describing the
content of the data set. Each tabular index is accompanied by
a detached PDS label. The index files present depend upon the
files in the data set.
Required files present in all data sets:
---------------------------------------
INDXINFO.TXT - The file you are reading.
INDEX.TAB - Main INDEX table listing all label files
INDEX.LBL - PDS Label for the main INDEX table
N.B. The INDEX.TAB file contains columns for the
RELEASE_ID and REVISION_ID. This is a system
used by the PSA to incrementally build up a data
set and to provide a mechanism by which files can
be updated without reconstructing the entire data
set. The system is not used by all missions. For
those missions not using the concept, a default
value of RELEASE_ID=0001 REVISION_ID=0000
is used in the INDEX label and table.
Optional files, depending on the content of the data set:
--------------------------------------------------------
BROWSE_INDEX.TAB - INDEX table listing all label files in the BROWSE
directory
BROWSE_INDEX.LBL - PDS Label for the BROWSE_INDEX table
GEO_XXXX.TAB - Geometry and position index file, where
XXXX = the reference target used to compute the
geometric parameters.
GEO_XXXX.LBL - PDS Label for the GEO_XXXX.TAB index file
Other index files can be defined by the data set developer to list
products in their data set and to provide valuable information and
relate various parameters to their data products. These are
individual to each data set.
Notes on Using the Index Tables
-------------------------------
Each index table contains one row (record) for each data product
on the volume. The table is formatted so that it can be read directly
into many data management systems. All fields are separated by commas
and character fields are enclosed in double quotation marks (").
Character fields are left justified and numeric fields are right
justified. Each record ends with ASCII carriage return and line feed
characters. This allows the table to be treated as a fixed length
record file on computers that support this file type and as a normal
text file on other computers.
The PDS label file for each table describes the content and
structure of the fields in the index table. This description includes
the name of each field, its format, and a brief definition. The
values for start byte and number of bytes listed in the label file do
not include commas between fields or quotation marks surrounding
character fields.
Name Last modified Size Description
Parent Directory -
browse_index.lbl 24-Oct-2016 04:28 5.4K [PDS label]
browse_index.tab 24-Oct-2016 04:28 1.0K [Table file]
checksum.lbl 11-Jan-2017 11:03 3.4K [PDS label]
checksum.tab 11-Jan-2017 11:03 46K [Table file]
index.lbl 24-Oct-2016 04:28 4.5K [PDS label]
index.tab 24-Oct-2016 04:28 15K [Table file]
indxinfo.txt 24-Oct-2016 04:28 5.6K
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