• Antelope Release 5.5 Mac OS X 10.8.5 2015-04-21

 

NAME

extrd - extract specified segment of the css data

SYNOPSIS


extrd
	[-c chan]
	[-n network]
	[-o outdir]
	[-s sta]
	dbname|wfd_dir|"wfd_fnames" stime etime

SUPPORT


Contributed code: NO BRTT support.
THIS PIECE OF SOFTWARE WAS CONTRIBUTED BY THE ANTELOPE USER COMMUNITY. BRTT DISCLAIMS ALL OWNERSHIP, LIABILITY, AND SUPPORT FOR THIS PIECE OF SOFTWARE.

FOR HELP WITH THIS PIECE OF SOFTWARE, PLEASE CONTACT THE CONTRIBUTING AUTHOR.

DESCRIPTION

This program reads seismic data in CSS 3.0 format, and extracts the specified subset of data. The input data set can be specified by one of the following:

dbname - database name

wfd_dir - full path name of a directory which contains a wfdisc files

wfd_fnames - full names of a wfdisc. Wild characters can be used in wfdisc name.

The program will create a data file and a wfdisc file with name of the form YYDDDHHMM.w and YYDDDHHMM.wfdisc respectively, which give the year, day, hour, and minute of the begining of the event.

COMMAND LINE ARGUMENTS

EXAMPLE 1

Extract a subset of data with a time window 1992053-14:00:00 to 1992063-14:00:00:00 from the set of data wfdisc files of which are located in directory /data/1991/wfdisc :

extrd /data/1991/wfdisc 1992053:14:00:00.0 1992063:14:00:00:00.0

EXAMPLE 2

Extract a subset of data with a descriptor file /hf/archive/anza with a time window 880257482.0 to 880260000.0. Extract vertical channels only. Store output data in /hf/archive/Z directory:

extrd -c ".*Z" /hf/archive/anza 880257482.0 880260000.0

AUTHOR

M. Glushko
Antelope User Group Contributed Software
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