SYNOPSIS
PERL PROGRAM NAME:
AUTHOR: Juan Lorenzo (Perl module only)
DATE:
DESCRIPTION:
Version:
USE
NOTES
Examples
SYNOPSIS
SEISMIC UNIX NOTES ELARAY - ray tracing for elastic anisotropic models
elaray <modelfile >rayends [optional parameters]
Optional Parameters:
xs=(max-min)/2 x coordinate of source (default is halfway across model)
zs=min z coordinate of source (default is at top of model)
nangle=101 number of takeoff angles
fangle=-45 first takeoff angle (in degrees)
langle=45 last takeoff angle (in degrees)
nxz=101 number of (x,z) in optional rayfile (see notes below)
mode=0 shoot P-rays
=1 shoot SV-rays
=2 shoot SH-rays
prim =1 only reflected rays are plotted ",
=0 only direct hits are displayed
refseq=1,0,0 index of reflector followed by sequence of:
transmission(0)
reflection (1)
transmission with mode conversion (2) ",
reflection with mode conversion (3) ",
ray stops(-1).
krecord if specified, only rays incident at interface with index
krecord are displayed and stored
f0=1 force impact strenght
fdip=0 force dip with respect to vertical
fazi=0 force azimuth with respect to positive x-axis
reftrans=0 =1 include reflec/transm coeff(currently only for P)
rayfile file of ray x,z coordinates of ray-edge intersections
wavefile file of ray x,z coordinates uniformly sampled in time
nt= number of (x,z) in optional wavefile (see notes below)
tw= traveltime associated with wavefront (alternative to nt)",
infofile ASCII-file to store useful information
outparfile contains parameters for the plotting software.
default is <outpar>
NOTES:
The rayends file contains ray parameters for the locations at which
the rays terminate.
The rayfile is useful for making plots of ray paths.
nxz should be larger than twice the number of triangles intersected
by the rays.
The wavefile is useful for making plots of wavefronts.
The time sampling interval in the wavefile is tmax/(nt-1),
where tmax is the maximum time for all rays. Alternatively,
one wavefront at time tw is plotted.
The infofile is useful for collecting information along the
individual rays.
The outparfile stores information used for the plotting software
AUTHORS: Andreas Rueger, Colorado School of Mines, 01/02/95
The program is based on :
gbray.c, Author: Andreas Rueger, 08/12/93
sdray.c, AUTHOR Dave Hale, CSM, 02/26/91User'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 f0
sub fangle
sub fazi
sub fdip
sub langle
sub mode
sub nangle
sub nt
sub nxz
sub prim
sub refseq
sub reftrans
sub tw
sub xs
sub zs
sub get_max_index
max index = number of input variables -1