This note is to announce the availability of Version 2.1 of XLISP-STAT, an extensible system for statistical computing and dynamic graphics. XLISP-STAT is based on a dialect of Lisp called XLISP. It is available for the Apple Macintosh, for workstations running the X11 window system under BSD UNIX (and perhaps System V with BSD enhancements), and for Sun workstations running SunView. A version for the Commodore Amiga is available as well. The system is based on David Betz' XLISP 2.1, which is written in C. To facilitate statistical computations I have modified standard Lisp functions for addition, logarithms, etc., to operate on lists and arrays of numbers, and have also added a number of basic statistical functions. About two thirds of the additions are written in C; the rest are written in Lisp. Several basic forms of plots, including histograms, scatterplots, 3-dimensional rotatable plots and scatterplot matrices are provided. These plots support various forms of interactive highlighting operations and can be linked so points highlighted in one plot will be highlighted in all linked plots. Interactions with the plots are controlled by the mouse, menus and dialog boxes. An object-oriented programming system is used to make it possible to customize menus, dialogs, and the way plots respond to mouse actions. The UNIX version, which can be compiled without graphics, for X11 graphics, or for SunView graphics, is available by anonymous ftp from umnstat.stat.umn.edu (128.101.51.1) It is in the file xlispstat2.1R1.tar.Z in the directory pub/xlispstat. (The version and release numbers will be updated as changes are made/bugs are fixed). This system has been compiled on a VAX, DEC 3100 (pmax), Sun 3, Encore Multimax and Apollo 4500. The Macintosh version is also available by anonymous ftp from the address given above. The Macintosh distribution consists of two parts, contained in the files XLISP-STAT2.1R1.Disk1.sit.Hqx XLISP-STAT2.1R1.Disk2.sit.Hqx in the directory puxlispstat. These files contain archives created with StuffIt 1.5.1 that have been binhexed with BinHex 4.0. The Macintosh distribution includes two versions of the system, one foe macs with a math coprocessor and one for generic macs. For reasonable operation the Mac version requires 2MB of memory. It may be possible to use it on very small problems with only 1MB. The program is fairly slow on a Mac Plus or SE. A tutorial introduction to the system is available. It is written primarily for the Macintosh version, but the differences to the UNIX version are minor. The tutorial is available as a set of LaTeX files in xlispstat.doc.tar.Z in the pub directory at the ftp address above. More complete documentation will be published as a book that should be available from WIley in October. The title of the book is "Lisp-Stat: An object-oriented environment for statistical computing and dynamic graphics." For further information contact Luke Tierney School of Statistics University of Minnesota Minneapolis, Mn. 55455 luke@umnstat.stat.umn.edu COPYRIGHT ****************************************************************************** * XLISP-STAT 2.1 Copyright (c) 1990, by Luke Tierney * XLISP version 2.1, Copyright (c) 1989, by David Betz. * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that * copyright notice and this permission notice appear in supporting * documentation, and that the name of Luke Tierney and David Betz not be * used in advertising or publicity pertaining to distribution of the software * without specific, written prior permission. Luke Tierney and David Betz * make no representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. * * LUKE TIERNEY AND DAVID BETZ DISCLAIM ALL WARRANTIES WITH REGARD TO THIS * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, * IN NO EVENT SHALL LUKE TIERNEY NOR DAVID BETZ BE LIABLE FOR ANY SPECIAL, * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. * * XLISP-STAT AUTHOR: * Luke Tierney * School of Statistics * University of Minnesota * Minneapolis, MN 55455 * (612) 625-7843 * * Email Address: * internet: luke@umnstat.stat.umn.edu * * XLISP AUTHOR: * David Betz * P.O. Box 144 * Peterborough, NH 03458 * (603) 924-4145 ******************************************************************************