By William Venables, B.D. Ripley

S is a high-level language for manipulating, analysing and exhibiting info. It types the root of 2 hugely acclaimed and standard facts research software program platforms, the industrial S-PLUS(R) and the Open resource R. This publication offers an in-depth consultant to writing software program within the S language lower than both or either one of these structures. it's meant for readers who've a few acquaintance with S language and wish to understand tips on how to use it extra successfully, for instance to construct re-usable instruments for streamlining regimen information research or to enforce new statistical equipment. One ofhe most eminent strengths of the S language is the convenience with which it may be prolonged via clients. S is a practical language, and services written by way of clients are top notch items handled within the similar method as features supplied via the approach. S code is eminently readable and so with a purpose to record accurately what algorithms have been used, and as a lot of the implementations are themselves written in S, they are often studied as types and to appreciate their subtleties. the present implementations additionally supply effortless methods for S services to name compiled code written in C, Fortran and related languages; this is often documented the following extensive. more and more S is getting used for statistical or graphical research inside of greater software program platforms or for entire vertical-market functions. The interface amenities are such a lot constructed on Windows(R) and those are coated with labored examples. The authors have written the commonly followed 'Modern utilized information with S-PLUS', now in its 3rd version, and several other software program libraries that improve S-PLUS and R; those and the examples utilized in either books can be found on the web. Dr. W.N. Venables is a senior Statistician with the CSIRO/CMIS Environmentrics undertaking in Autralia, having been on the division of information, collage of Adelaide for a few years formerly. Professor B.D. Ripley holds the Chair of utilized records on the collage of Oxford, and is the writer of 4 different books on spatial records, simulation, trend attractiveness and neural networks. either authors are identified and revered thorughout the overseas S and R groups, for his or her books, workshops, brief classes, freely on hand software program and during their vast contributions to the S-news and R mailing lists.

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S is a high-level language for manipulating, analysing and exhibiting facts. It varieties the foundation of 2 hugely acclaimed and widespread information research software program platforms, the economic S-PLUS(R) and the Open resource R. This publication offers an in-depth advisor to writing software program within the S language lower than both or either one of these structures.

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**Example text**

Some town names contain spaces which would make list input complicated. The univariate procedure can be used to examine the distributions of numeric variables. 00000 NOTE: The mode displayed is the smallest of 3 modes with a count of 2. 2008 11:21pm Compositor Name: VBalamugundan A Handbook of Statistical Analyses Using SAS Quantiles (Definition 5) Quantile Estimate 100% Max 138 99% 138 95% 122 90% 101 75% Q3 75 50% Median 39 25% Q1 14 10% 8 5% 6 1% 5 0% Min 5 Extreme Observations Lowest Highest Value Obs 5 Value Obs 39 107 38 5 3 122 19 6 41 122 59 6 37 133 35 8 46 138 26 The normal option on the proc statement results in a test for the normality of the variables (see below).

5 Proc Import For tab- and comma-delimited data, particularly where the first line contains the variable names, proc import is a useful alternative to reading in the data with a data step. For example, to read a tab-delimited file with the variable names in the first line, use Proc import datafile ¼ 'filename' out ¼ sasdataset dbms ¼ tab replace; getnames ¼ yes; run; For comma-separated value files, substitute dbms ¼ csv. Proc import does a good job of determining whether variables are numeric or character and their format, but the results need to be checked.

Each output destination has a default style optimized for that destination. Somewhat confusingly, the default style for html is called default, whereas that for rtf is called rtf. rtf' style ¼ theme; The names of other built-in styles can be listed by submitting: proc template; list styles; run; Where the final output is to be in black and white, with greyscale fills or shading, the journal style is a good choice. The rtf output may also appear in a results viewer window, and this may need to be closed before more rtf output is generated.