What's New
- SAS/IML Workshop is a graphical user interface and extension of SAS/IML software that enables you to explore data interactively using standard statistical graphics and tables. IML Workshop provides an integrated development environment for writing, debugging, and executing IML programs. IML Workshop also implements the IMLPlus programming language, which is an enhanced version of the IML programming language. IMLPlus provides new language features such as the ability to call SAS procedures and external C/Fortran/Java functions. IML Workshop requires a PC running the Microsoft Windows operating system.
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Robust Regression
New subroutines for outlier detection and removal: Least Median of Squares, Least Trimmed Squares, and Minimum Volume Ellipsoid Estimation
SAS/IML Software
The SAS System provides a powerful and flexible programming language in a dynamic, interactive environment for programmers,
statisticians, and researchers. Use the SAS System for data manipulation and specialized statistical analysis, then employ
the matrix language for more specific analysis and exploration.
SAS/IML operates on matrices.
The fundamental data element in SAS/IML is the matrix, a two-dimensional (row-by-column) array of numeric or character values. Built-in matrix operators, functions, and call routines may be applied to perform complex tasks such as matrix inversion or eigenvector generation.
SAS/IML is a programming language.
Simple syntax makes it easy to translate mathematical formulas into program statements. You can program easily and efficiently with the many features for arithmetic and character expressions. A complete set of control statements give you the commands necessary for execution control and program modularization. Access to a wide range of built-in subroutines makes your programming fast, easy, and efficient, and you can build your own module library to extend the functionality of the software.
SAS/IML software is interactive.
You can execute a command as soon as you enter it, or you can collect commands for later execution in batch production runs. When you execute a command, you see the results immediately. You can interact with an executing module by programming IML to pause, allowing you to enter additional statements before continuing execution.
SAS/IML software is dynamic.
You do not need to declare, dimension, or allocate storage for a data matrix; SAS/IML software does this automatically. You can change the dimension or type of a matrix at any time. You can open multiple files or access many libraries. You can reset options or replace modules at any time.
SAS/IML software processes data.
You can read all observations (or conditionally selected observations) from a SAS data set into a matrix, creating multiple vectors (one for each variable in the data set) or a matrix containing a column for each data set variable. You can create a new SAS data set or append observations to an existing SAS data set in addition to editing an existing SAS data set.
SAS/IML software produces graphics.
You have access to a wide range of graphics commands, allowing you to create customized displays and visually explore relationships in data.