***** File INDXINFO.TXT
Index File Information
This file contains a description of the index files created for the L-SP
Discipline CD-ROMs. There are twenty five files in the INDEX directory
(besides this file), all relating to this particular disc. Most are intended
for creating a database to guide the user in selecting files of interest.
The CALIB.* files contain the names of files containing calibration data,
and the names of the data files which they calibrate. The CDSTRUCT.* files
contain a full list of all header and data files on this disc, along with file
sizes, allocations and physical block numbers. This database may be of use
for those writing direct access routines. The EPHEM.* files contain the comet
ephemeris spanning the dates on this disc. It is a delimited form of the file
EPHEM.TAB in the EPHEM subdirectory. The NETLARGE.* files contain the full
set of FITS keywords specific to the Large-Scale Phenomena Discipline. The
values are taken from the original FITS headers for the files included on this
disc. The PATHTABL.* files give the full directory path to the data files on
the disc. Unlike the CDSTRUCT database (which contains entries for all files),
only the names of the data files are in the PATHTABL database. This database
will assist the user in determining which subdirectory contains the data of
interest, as well as assisting in constructing a fully-qualified file name for
the data files.
There are four types of files associated with each index, distinguished
by the extensions on the file names. The four types of files are:
*.DBF - These are dBASE III+ compatible database files. They do not
contain any data records, only the structure of the
corresponding database. The data records may be appended from
the data tables (in the .IDX files). Many database management
systems can import databases from .DBF files.
*.IDX - These files contain the actual data records from each table.
They are delimited tables. Numeric fields are delimited by
commas (,) and ASCII text fields are contained in quotes (")
and also delimited with commas. Each line ends with the
characters <CR><LF> (ASCII 13 and 10 respectively). All
fields in the tables are fixed width and the total width
for each table follows: CALIB, 70 bytes; CDSTRUCT, 74 bytes;
EPHEM, 108 bytes; LSPNOBS, 258 bytes; NETLARGE, 787 bytes;
and PATHTABL, 80 bytes. These files may be appended to the
end of an empty database structure to create the full index
database.
*.STR - These are "structure" files. They contain information, in
delimited format, on the number, names and widths of the
fields in each database. They have been provided as ASCII
files of fixed length (80 bytes) to document the structure
of each table.
*.HDR - These are FITS header files, containing both the standard and
extension headers. The files are not text files, although
they contain only ASCII characters. There are no delimiters,
and both the standard and extension headers are padded to
lengths which are multiples of 2880 bytes. In order to create
a fully compatible FITS byte stream, simply concatenate the
header file with the corresponding .IDX file and pad to fill
out the byte stream in multiples of 2880.
In order to create a database from dBASE III with these files, issue the
following commands at the "." (dot) prompt:
. use <filename>
. append from <filename>.idx delimited
where <filename> is one of CALIB, CDSTRUCT, EPHEM, LSPNOBS, NETLARGE or
PATHTABL. Most database programs can import dBASE III compatible files. In
order to use another database program to manage the index tables, you will
need to import the (empty) index from the appropriate .DBF file, then append
the data from the corresponding .IDX file.
There is one additional file (STRUCT.DBF) in this subdirectory. This is
the database used to create all the other databases. It consists of 4 fields,
FIELD_NAME, FIELD_TYPE, FIELD_LEN and FIELD_DEC, which document the structure
of the index tables. When the appropriate .STR file is appended to this
structure database, dBASE III+ can create the corresponding index database.
Name Last modified Size Description
![[DIR]](/icons/back.gif)
Parent Directory -
![[ ]](/icons/unknown.gif)
calib.dbf 28-Mar-1990 04:45 512
![[ ]](/icons/fits.gif)
calib.hdr 28-Mar-1990 04:45 8.4K [FITS header]
calib.idx 28-Mar-1990 04:45 15K
calib.str 28-Mar-1990 04:45 640
cdstruct.dbf 28-Mar-1990 04:45 512
cdstruct.hdr 20-Jun-1990 05:45 8.4K [FITS header]
cdstruct.idx 29-Jun-1990 06:42 41K
cdstruct.str 28-Mar-1990 04:45 560
ephem.dbf 20-Apr-1990 05:45 642
ephem.hdr 20-Jun-1990 05:45 11K [FITS header]
ephem.idx 20-Jun-1990 05:45 1.3K
ephem.str 20-Apr-1990 05:45 1.5K
![[TXT]](/icons/text.gif)
indxinfo.txt 28-Mar-1990 04:45 6.4K
lspnobs.dbf 28-Mar-1990 04:45 418
lspnobs.hdr 28-Mar-1990 04:45 8.4K [FITS header]
lspnobs.idx 28-Mar-1990 04:45 26K
lspnobs.str 28-Mar-1990 04:45 960
netlarge.dbf 20-Apr-1990 05:45 2.5K
netlarge.hdr 20-Jun-1990 05:45 28K [FITS header]
netlarge.idx 22-Jun-1990 09:04 180K
netlarge.str 20-Apr-1990 05:45 5.7K
pathtabl.dbf 20-Apr-1990 05:45 512
pathtabl.hdr 20-Jun-1990 05:45 8.4K [FITS header]
pathtabl.idx 20-Jun-1990 05:45 37K
pathtabl.str 20-Apr-1990 05:45 720
struct.dbf 20-Apr-1990 05:45 512
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