DOCUMENTATION

SYNOPSIS

PERL PROGRAM NAME:  UNISAM - UNIformly SAMple a function y(x) specified as x,y pairs	
AUTHOR: Juan Lorenzo (Perl module only)
DATE:   
DESCRIPTION:
Version: 

USE

NOTES

Examples

SEISMIC UNIX NOTES

 UNISAM - UNIformly SAMple a function y(x) specified as x,y pairs	

   unisam xin= yin= nout= [optional parameters] >binaryfile		
    ... or ...								
   unisam xfile= yfile= npairs= nout= [optional parameters] >binaryfile
    ... or ...								
   unisam xyfile= npairs= nout= [optional parameters] >binaryfile	

 Required Parameters:							
 xin=,,,	array of x values (number of xin = number of yin)	
 yin=,,,	array of y values (number of yin = number of xin)	
  ... or								
 xfile=	binary file of x values					
 yfile=	binary file of y values					
  ... or								
 xyfile=	binary file of x,y pairs				
 npairs=	number of pairs input (active only if xfile= and yfile=	
 		or xyfile= are set)					

 nout=		 number of y values output to binary file		

 Optional Parameters:							
 dxout=1.0	 output x sampling interval				
 fxout=0.0	 output first x						
 method=linear  =linear for linear interpolation (continuous y)	
		 =mono for monotonic cubic interpolation (continuous y')
		 =akima for Akima's cubic interpolation (continuous y') 
		 =spline for cubic spline interpolation (continuous y'')
 isint=,,,	 where these sine interpolations to apply		
 amp=,,,	 amplitude of sine interpolations			
 phase0=,,,	 starting phase (defaults: 0,0,0,...,0)			
 totalphase=,,, total phase (default pi,pi,pi,...,pi.)			
 nwidth=0       apply window smoothing if nwidth>0                     
 sloth=0	 apply interpolation in input (velocities)		
		 =1 apply interpolation to 1/input (slowness),		
 		 =2 apply interpolation to 1/input (sloth), and write	
 		 out velocities in each case.				
 smooth=0	 apply damped least squares smoothing to output		
 r=10		  ... damping coefficient, only active when smooth=1	


 Author:  Dave Hale, Colorado School of Mines, 07/07/89
          Zhaobo Meng, Colorado School of Mines, 
 	    added sine interpolation and window smoothing, 09/16/96 
          CWP: John Stockwell,  added file input options, 24 Nov 1997

 Remarks: In interpolation, suppose you need 2 pieces of 
 	    sine interpolation before index 3 to 4, and index 20 to 21
	    then set: isint=3,20. The sine interpolations use a sine
	    function with starting phase being phase0, total phase 
	    being totalphase (i.e. ending phase being phase0+totalphase
	    for each interpolation).
 	    

CHANGES and their DATES

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 amp

sub dxout

sub fxout

sub isint

sub method

sub nout

sub npairs

sub nwidth

sub phase0

sub r

sub sloth

sub smooth

sub totalphase

sub xfile

sub xin

sub xyfile

sub yfile

sub yin

sub get_max_index

max index = number of input variables -1

cpanm App::SeismicUnixGui

perl -MCPAN -e shell
install App::SeismicUnixGui