SPLIDA Splus Life Data Analysis

SPLIDA (Splus Life Data Analysis) is an add-on to S-PLUS. SPLIDA can be downloaded from this page for free. SPLIDA consists of SPLUS functions (which in many cases call underlying Fortran code) and a GUI to do most of the computations needed to do the examples and produce the figures in the 1998 Meeker and Escobar text Statistical Methods for Reliability Data , published by John Wiley and Sons, Inc. Example commands and data sets are provided for almost all of the examples in the book.

SPLIDA has a graphical user interface (GUI) for much of the SPLIDA functionality in Meeker and Escobar (1998). Additional functionality is available at the command level. In future releases, the GUI will be extended to the other parts of SPLIDA to provide additional advanced methods and graphics for reliability data analysis. Draft documentation for the GUI (which containes many examples) is available, as described below.

You must have a Windows version of S-PLUS to actually run SPLIDA. S-PLUS is a very powerful graphics/analysis/computing environment. S-PLUS is a commercial package that can be purchased from the Insightful corporation (www.insightful.com/splus) .

SPLIDA GUI Documentation

The SPLIDA GUI menu structure was designed so that SPLIDA can be used without reference to documentation. The use of the menu structure should be, for the most part, straightforward and intuitive. Documentation for the GUI is given in a pdf document that can downloaded by clicking here. This document contains a description of the capabilities of the functions as well as an extensive collection of examples and screen shots for SPLIDA functionality that has been incorporated into the GUI.

SPLIDA Release Notes

Click here to see or print a listing of new features for the current release and that have appeared in previous official releases of SPLIDA.


Click here to see or print some early notes that describe the SPLIDA works when using commands. This is the only documentation of the commands-line operation that is likely to exist for a while, other than the detailed examples that are contained in the echapters folder of the distribution. These files contain commands for almost every example in Meeker and Escobar (1998) . Of course most of the examples can now also be done through the GUI.

Installation Instructions for SPLIDA

The current version of SPLIDA is compatable with S-PLUS versions 6.0, 6.1, 6.2 and 7.0 running under Windows 98, Windows NT, Windows ME, Windows 2000, or Windows XP. Click here to see or print instructions for installing SPLIDA.

The SPLIDA GUI Documentation mentioned above contains more detailed installation instructions including installation on multiuser machines with the possibility of multiple project directories for a single user.

Click here to download the May 28, 2008 version (Version 6.8.6) of SPLIDA for S-PLUS 6.x. and 7.0

Note that to install a new version of SPLIDA, if you are already using it, all you need to do is to delete the c:\Splida folder and unzip the new version. Because of the way that S-PLUS works, it is generaly unsafe to just over-write the old version.

A version of SPLIDA is still available for S-PLUS 2000. This version of SPLIDA is no longer supported, but can be downloaded from here.

Because SPLIDA is free, it comes with no guarantee. SPLIDA has, however, been extensively checked for correctness and I try to respond to and repair bugs when they are reported.

Click here to go to W.Q. Meeker's homepage.