dennis@uw-warp.UUCP (Dennis Gentry) (10/27/88)
Announcing S-PLUS.
==================
S-PLUS is a state-of-the-art language and system for data analysis and
statistical and mathematical computing. By taking advantage of modern
workstations with interactive graphics, S-PLUS provides a superb
platform for exploratory data analysis. S-PLUS uses the latest robust
statistical methods. In addition, S-PLUS is fully and seamlessly
user-extensible through the addition of custom C, Fortran, or S-PLUS
functions or subroutines.
S-PLUS is available on the following Unix machines: Apple Macintosh II;
AT&T 3B2; IBM RT; Vaxstation; Apollo; HP 9000; Sun 3; Sun 386i; and
the Sun 4.
S-PLUS functionality includes:
Graphics And EDA
================
- Interactive/Dynamic Graphics
- Presentation Graphics
- Exploratory Data Analysis
Statistical Methods
===================
- Modern Regression Methods
- Multivariate Statistics
- Robust Methods
- Simulation
- Survival Analysis
- Time Series Analysis
- Univariate and Bivariate Statistics
Mathematical Computing and Numerical Analysis
=============================================
- Standard Vector and Matrix operations
- Standard "Scientific Calculator" functions
- Matrix Decomposition and Eigen analysis
- 1-D and 2-D Fast Fourier Transform
More Plusses
============
- User Extensibility
- On-line help
- On-line example datasets
- Software Support
S-PLUS is produced and supported by Statistical Sciences, Inc.
For more information, phone Statistical Sciences at:
(206) 322-8707
or write to:
uunet!statsci!info
or:
Attn: David Hartwell
Statistical Sciences, Inc.
Box 85625
Seattle, WA 98145-1625
Here is some more detailed information on S-PLUS:
Graphics And EDA
================
Interactive Graphics
--------------------
Operation under Suntools, X-Windows, or Apollo DM; reshapeable,
saveable plot windows; pairwise scatter plots with marginal histograms
and 3-D point cloud rotation, with "brushing" and linked highlighting;
mouse-guided identification of points;
Presentation Graphics
---------------------
Multiple data set and multiple plot composition tools; quick, easy,
and high-quality view-graph production of legends, tables, and text;
bar graphs; pie charts; histograms; time series plots; gray scale
images and topographic maps; high-resolution camera-ready laser
printer output with a single command, even from low-resolution or
non-graphic terminals; "click" to print postscript output.
Exploratory Data Analysis
-------------------------
Use of Graphics described above, for example: Boxplots, QQ-plots for a
wide range of distributions; multivariate displays including "faces"
and "trees."
Statistical Methods
===================
Modern Regression Methods
-------------------------
Spline and supersmoother scatterplot smoothers; alternating
conditional expectations regression; additive and variance stabilizing
regression; projection pursuit regression; regression diagnostics.
Multivariate Statistics
-----------------------
Least squares regression; principal components; factor analysis;
canonical correlations; multidimensional scaling; log-linear
contingency tables; hierarchical clustering; k-means clustering.
Robust Methods
--------------
Median polish for two-way tables; modern high breakdown point robust
extimates for location, scale, regression, covariance matrix; time
series AR models; robust filters and smoothers for time series; robust
ARIMA model fitting.
Simulation Tools
----------------
Random number generations for all common distributions: beta, Cauchy,
chi-square, F, gamma, lognormal, logistic, normal, stable, students-t,
uniform; ARIMA model simulation.
Survival Analysis
-----------------
Cox proportional hazards regression; Poisson regression; Anderson-Gill
version of Cox model; Kaplan-Meier and Flemington-Harrington survival
estimates; multiple survival curve plots.
Time Series Analysis
--------------------
Univariate AT and ARIMA modeling; AIC order selection; multivariate AR
modeling; correlation, partial correlation; univariate and
multivariate spectral analysis; complex demodulations, filtering,
diagnostic and robust methods.
Mathematical Computing and Numerical Analysis
=============================================
Standard Vector and Matrix operations
-------------------------------------
Invert, solve, transpose, permute matrices; apply functions to
ragged arrays.
Standard "Scientific Calculator" functions
------------------------------------------
Functions work on vectors and matrices as well as individual numbers:
+, -, *, /, **, ^, modulo, trig functions, transcendentals, sorting,
and logic functions, 1-D and 2-D FFT.
Matrix Decomposition and Eigen Analysis
---------------------------------------
Singular Value (SVD), Gram-Schmidt, and Cholesky decomposition
of matrices; Eigen analysis of symmetric matrices.
More Plusses
===========
User Extensibility
------------------
S-PLUS is completely extensible via the addition of arbitrary C and
Fortran functions or subroutines. In addition, functions can be
easily written in the (very high level) S language itself. All of
these functions can be called from S in the same manner as previously
built-in functions.
On-line Help, Example Datasets
------------------------------
Every S-PLUS function has complete on-line help describing the
parameters and return values. The help for many functions includes
examples using one of the 36 included example datasets.
Software Support
----------------
If you buy S-PLUS, you can count on regular software updates and
expert assistance, provided by Statistical Science's expert staff of
statisticians and computer scientists.
Some Quotes from Users:
-----------------------
"S-PLUS lets us take full advantage of the capabilities of our
graphics workstations. S-PLUS increased our payback from statistical
graphics because it gives us the ability to generate more powerful
graphical displays."
- Perry D. Haaland, Ph.D.
Senior Scientist, Statistics
Becton-Dickinson and Co.
"By combining the power and graphical capabilities of a workstation
and the flexibility of the Unix operating system, S-PLUS puts in the
hands of the researcher and data analyst the most advanced statistical
tools in a highly interactive and user-friendly environment. S-PLUS
is not just a package, it is a new philosophy of data analysis and
research in statistics. A real plus to the statistical profession."
- Elvezio Ronchetti
Professor of Statistics
University of Geneva
S-PLUS is based on the S system developed at AT&T Bell Labs.
Not all features listed above are available on all machines (e.g.,
the Suntools driver is not available on Apollo machines).
Unix is a registered trademark of AT&T. (Of course).
PostScript is a registered trademark of Adobe, Inc.
Macintosh is a registered trademark of Apple Computer, Inc.
IBM is a registered trademark of International Business Machines, Inc.
Vaxstation is a registered trademark of Digital Equipment Corporation
--
Dennis.
-------
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