Statistical Analysis of Non-detect Data (SAND)
The R package Statistical Analysis of Non-detect Data (sand)
Version 1.3 (REVISED 11 November 2007) contains most of the functions
described in ORNL/TM-2005/52. The functions in the sand package replace
the "informal" R functions at the AOED
website described in ORNL/TM-2005/52. The most important changes are the addition of on-line
help files that document each function and the
functions readss (revised) and icfit (new function for interval censored
data---see the examples in Step 3 below)
Statistical
Methods and Software for the Analysis of
Occupational Exposure Data With Non-Detectable Values
Edward L. Frome and Paul F. Wambach
ORNL Technical Report "Statistical Methods and
Software for the
Analysis of Occupational Exposure Data With Non-Detectable Values",
ORNL/TM-2005/52 is available
here in PDF format
Abridged Version (Abstract,Introduction,Applications and Appendix) is available
here in HTML
format
The following
instructions explain how to obtain the Windows (95 or later) version of R,
download and install the sand package, and analyze data using these functions in
sand. The folder "...\My Documents" will be used to illustrate how to
download and install the R package sand Version 1.3 . To REPLACE Version 1.0 through 1.2 REPEAT Steps
2-f through 2-j.
NOTE: Version 1.3 resolves compatibility issues with R version 2.6.
Select the appropriate step from the left hand menu
1. Install R and place R-icon (shortcut) on your desktop.
NOTE: this step
requires Administrator permission.
2. Download and install R package sand.
If you are NOT using Window OS see Step 1-f.
3. Examples of how to use the most important functions in sand.
4. Reference Manual [sand.pdf]
For Version 1.2
R is a language
and environment for statistical computing and graphics. It compiles and runs on
a wide variety of UNIX platforms and similar systems (including FreeBSD and
Linux), Windows, and MacOS. R is available as Free Software under the terms of
the Free Software Foundation's GNU General Public License in source code form
and as binaries.
For additional information visit the R Homepage and read
What is R? (see Menu on left)
and the FAQs under Documentation. For on line documentation go to the R Homepage
and Select [Manuals] on left
hand menu and then see Item 1 An Introduction to R and click on [browse
HTML].
For additional information on the use of this package in a Windows environment
CLICK HERE
To obtain information on changes to the sand package send an e-mail message
to FromeEL@ornl.gov with
Subject: R Package sand.
This page was last updated on February 27, 2008
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