Open and Extensible
ViSta is an OPEN software system
the code is available to the programmer. This includes
both the Lisp code for ViSta
and the C
code for XLisp-Stat.
code can be used as the basis for developing new
code that extends the system's capabilities.
ViSta is an EXTENSIBLE software system
written in Lisp, FORTRAN or C are accessible from
can be written to extend the range of desired model-objects
that perform major, "prepackaged" statistical computations.
can be written to implement new statistical graphics