[S] Recent additions to S-PLUS Hmisc and Design Libraries

Frank E Harrell Jr (fharrell@virginia.edu)
Fri, 13 Nov 1998 11:49:12 -0500

Here are some new features and functions in the Hmisc library
for S-PLUS, available from StatLib.

1. The cleanup.import function cleans up more problems in
data frames that are caused by importing from Excel, for
example. It translates infinite values (caused by having
certain non-numeric characters in mainly character fields)
to NAs and translates factor variables whose levels are
all numeric (or blank) back to numeric variables.

cleanup.import also merges in label attributes for variables
that come from an imported SAS dataset created by

2. There is now a trellis version of the ecdf function for empirical
distribution function plots with optional quantile reference lines.
Example: ecdf(~ rainfall | country, groups=region) will show
the ECDF stratified by region within country, with multiple
panels used to depict countries. Typing Key() after the plot
is created will put a key for region on the graph page. (Key()
also works with the xYplot function).

3. Some new options have been added to transcan related to
multiple imputation, and a bug related to missing data has
been fixed in xYplot.

4. The Design library's validate and calibrate functions now
check for empty cells on Y during bootstrap resampling of
proportional odds ordinal logistic models.

5. Design's val.prob function has been greatly enhanced.

There are separate versions of the Hmisc and Design libraries for Windows and UNIX (or Linux).

The document "An Introduction to S-PLUS and to the Hmisc and Design Libraries" by Alzola & Harrell underwent major revisions in
August. This 300-page book is available from the web page listed below.

Frank E Harrell Jr
Professor of Biostatistics and Statistics
Division of Biostatistics and Epidemiology
Department of Health Evaluation Sciences
University of Virginia School of Medicine

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