SYNOPSIS

PERL PROGRAM NAME:

AUTHOR: Juan Lorenzo (Perl module only)

DATE:

DESCRIPTION:

Version:

USE

NOTES

Examples

SYNOPSIS

SEISMIC UNIX NOTES SUNULL - create null (all zeroes) traces

 sunull nt=   [optional parameters] >outdata			



 Required parameter						

 	nt=		number of samples per trace		



 Optional parameters						

 	ntr=5		number of null traces to create		

 	dt=0.004	time sampling interval			



 Rationale: It is sometimes useful to insert null traces	

	 between "panels" in a shell loop.			



 See also: sukill, sumute, suzero				





 Credits:

	CWP: Jack K. Cohen



 Trace header fields set: ns, dt, tracl

User's notes (Juan Lorenzo) untested

CHANGES and their DATES

Import packages

instantiation of packages

Encapsulated hash of private variables

sub Step

collects switches and assembles bash instructions by adding the program name

sub note

collects switches and assembles bash instructions by adding the program name

sub clear

sub dt

sub nt

sub ntr

sub get_max_index

max index = number of input variables -1