S-Plus(ID:5916/spl020)

Commercialised version of S

Country: us
- languages for us
- us/1995
Began: 1995

Later incorporated into Axum

S-Plus

Commercialisation of

References:

Spector, Phil "Introduction to S and S-Plus" Wandsworth 1995 view details Abstract: Accessing the power of S. . .designed to make the language of choice for high-end research statisticians more accessible, this book demonstrates how to get the most out of the unique power of S to display, manipulate, analyze, and graph data. An Introduction to S and S-PLUS presents ideas and methods in a straightforward manner to extend computerized research possibilities for anyone involved in data management, manipulation and presentation of statistical computing, statistical modeling, or graphics. To encourage effective self-study and hands-on experimentation, the author accompanies his presentation of every concept with an example, either using data sets that are distributed with S or easily created from them. It should not be necessary to enter any data to recreate the examples in the book. Throughout, the focus is on the unique features of S (and its commercial version, S-PLUS) that do not have exact parallels in other languages. Among the topics examined are functional programming concepts, production of custom graphics, and the writing of functions.

Larsen SO, Christiansen M, Norgaard-Pedersen B. "Calculation of roc curves in multidimensional likelihood ratio based screening with Down's syndrome as a special case" J Med Screen. 1998;5(2):57-62. view details Abstract: The development of algorithms and computer programs for the analysis of screening performance in situations with multiple normally (Gaussian) distributed selection markers and a priori risks depending on a stratification of the population. METHODS: The S-PLUS programming language was used to construct programs producing distributions of log likelihood ratios based on the Monte Carlo simulation. These distributions were used to construct programs for the calculation of roc curves, including a possible stratification of the population. RESULTS: S-PLUS programs for the analysis of screening performance are listed and described. The programs can be used without any special knowledge of S-PLUS. An example of the use of the programs is given.