BASEDIT

BASEDIT creates a copy of a MERGE-format file, eliminating the space reserved for baselines or closure triangles that have no associated data.

Programs that create MERGE-format files (e.g., MERGE) usually reserve space for the maximum possible number of baselines and/or closure triangles; e.g., if the dataset includes N stations, they will reserve space for N(N-1)/2 baselines, even if some of these baselines have no associated data. Program BASEDIT reads through the file to find out which baselines and/or closure triangles have data, and creates a new copy of the input file, allocating space for only these baselines and/or triangles. The sole purpose of this program is to reduce the amount of disk space occupied by a Merge file.

Example

% basedit
INPUT  = 0831.MRG  
OUTPUT = 0831.MRG2
/

Parameters

Parameters INPUT and OUTPUT must be specified. The parameters names can be abbreviated to uniqueness (minimum match). Both the parameters are character strings, but they need not be enclosed in quotation marks unless they include commas or blank spaces. End the list of parameters with a slash (/).

INPUT = "filename": the name of the input merge-format file (e.g., INPUT = CITSCR:[TJP.B2]T1.MRG). This parameter must be specified; there is no default.
OUTPUT = "filename": a name for the output file created by BASEDIT. This parameter must be specified; there is no default.

Limitations

The maximum number of stations is 20; and only files with MERGE format 1 are accepted.

History

Version 1.0: 1985 Jun 20 - new program (TJP).
Version 1.1: 1987 Dec 15 - add a history record.
Version 1.2: 1988 Jun 21 - Convex changes.
Version 1.3: 1990 Nov 13 - remove variables declared but not used.

Tim Pearson, California Institute of Technology
tjp·astro.caltech.edu