NAME
      Splus - Interactive Environment for Data Analysis and Graphics

 SYNOPSIS
      Splus [-e]

 DESCRIPTION
      S-PLUS is a language for data analysis, graphics etc.  Users type
      expressions to S-PLUS; S-PLUS evaluates the expressions.  Results may
      be assigned to a permanent database or printed on the terminal.  All
      expressions operate on self-describing data structures.

      Expressions may use standard arithmetic, logical and boolean
      operators, subsetting ([]) with arithmetic or logical expressions,
      component selection($), and various special operators.  There are a
      large variety of functions for statistical, numerical, and graphical
      techniques, including

      +    Two- and three-dimensional plotting

      +    Interactive graphics and data visualization

      +    Basic statistics

      +    Regression and ANOVA

      +    Multivariate statistics and graphics

      +    Time series analysis

      +    Survival analysis

      Graphics may be done on any of a number of interactive terminals,
      including the X11 and SunView window systems, or on a printing
      terminal.  X11 support includes graphics devices for OPEN LOOK and
      Motif graphical user interfaces. Graphics can be printed on PostScript
      or LaserJet printers, or HP-GL plotters.

      The language can be extended easily with user-written functions, and
      dynamically or statically loaded subroutines in C and Fortran.

      On-line documentation is available through the help function.  An
      X11-based help system is available through the help.start function.

 OPTIONS
      -e   Use the S-PLUS command line editor, which allows you to recall
           and edit previously issued commands.

 EXAMPLES
      help.start()         # starts X11 help window showing all S-PLUS functions
      x <- rnorm(100)      # generate 100 pseudorandom numbers from
                           # normal distribution, and save under the name x
      lsfit(x,y)           # regression of y vector on x matrix
      help("brush")        # print out detailed documentation for brush function

 FILES
      .Data
           Directory for working database

 SEE ALSO
      S-PLUS User's Manual.  (Two volumes.) Available from StatSci, 1700
      Westlake Ave. N., Suite 500, Seattle, WA  98109.

      S-PLUS Reference Manual. Also available from StatSci.

      Richard A. Becker, John M. Chambers, and Allan R. Wilks, The New S
      Language: A Programming Environment for Data Analysis and Graphics.
      Wadsworth, 1988.

      John M. Chambers and Trevor Hastie, eds.  Statistical Models in S.
      Wadsworth, 1992.