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. ------- arpa: uw-nsr!uw-warp!dennis@beaver.cs.washington.edu usenet: {ihnp4|decvax|...}uw-beaver!uw-nsr!uw-warp!dennis