NAME
x_update - Archiving of Cross-Over Information
SYNOPSIS
x_update cross-overfile [ -Xxbase ] [ -Llegbase ] [ -V ] [ -Wmax ]
DESCRIPTION
x_update reads the ASCII file produced by x_over and writes the infor-
mation to the database files xx_base.b and xx_legs.b (unless other
filenames are specified on the command line) using a compact, binary
format. The options recognized are:
-X Indicate alternate xx_base.b file.
-L Indicate alternate xx_legs.b file.
-V Verbose. Reports the pair currently being processed.
-W Prints a warning if the number of COEs generated by any pair of
legs exceed max.
For security reasons the xx_legs.b are first renamed to xx_legs.b_old, to pre-
vent loss of
information if a black-out or system crash should occur during writing
of the new xx_legs.b file. It is recommended that the old file is left
on the disk in case of other disasters. Note that x_update does not
check if a pair of legs already exist in the xx_base.b file. It is the
user’s’ responsibility to ensure that duplication of information does
not occur. Should some pairs already in the database need to be re-
examined, then run x_remove which will wipe out all traces of the spec-
ified cruises from the x_system data base files. Now we can pass the
pairs that need to be redone through x_over/x_update again.
SEE ALSO
gmt(GMTMANSECTION), x_system(GMTMANSECTION)
REFERENCES
Wessel, P. XOVER: A Cross-over Error Detector for Track Data, Computers
& Geosciences, 15, 333-346.
1 Jan 2004 x_update(l)
Man(1) output converted with
man2html