# SeismicUnixGui
SeismicUnixGui is a graphical user interface (GUI) to select parameters for Seismic Un*x (SU) modules. 
Seismic Un*x (Stockwell, 1999) is a widely distributed free software package for processing seismic reflection
and signal processing.  Perl/Tk is a mature, well-documented and free object-oriented graphical user interface for Perl.  
In a classroom environment, shell scripting of SU modules engages students and helps focus on the theoretical limitations
and strengths of signal processing.  However, complex interactive processing stages, e.g., selection of optimal 
stacking velocities, killing bad data traces, or spectral analysis requires advanced flows beyond the scope of 
introductory classes.  In a research setting, special functionality from other free seismic processing software 
such as SioSeis (UCSD-NSF) can be incorporated readily via an object-oriented style to programming.
An object oriented approach is a first step toward efficient extensible programming of multi-step processes, 
and a simple GUI simplifies parameter selection and decision making.  Currently, in SeismicUnixGui, Perl 5 packages 
wrap nearly 300 SU modules that are used in teaching undergraduate and first-year graduate student 
classes (e.g., filtering, display, velocity analysis and stacking).  Perl packages (classes) can advantageously
add new functionality around each module and clarify parameter names for easier usage.  For example, through 
the use of methods, packages can isolate the user from repetitive control structures, as well as replace the 
names of abbreviated parameters with self-describing names.  Moose, an extension of the Perl 5 object system, 
greatly facilitates an object-oriented style.  Perl wrappers are self-documenting via Perl programming document 
markup language.

=head1 COPYRIGHT

    Copyright 2023 Juan M. Lorenzo. You can distribute and/or modify any of 
    the documents found in the current directory or any subdirectories within,with the
    exception of documents written in the FOrtran language,
    under the same terms as the current Perl license.
    
    See: http://dev.perl.org/licenses/
    
    Copyright 2023 by Emilio E. Vera for documents written in the Fortran language,
    contained; can distribute and/or modify these
    documents under the same terms as the current Perl license.
    
    See: http://dev.perl.org/licenses/