R is a language and environment for statistical computing and graphics. It is available as Free Software under the terms of the Free Software Foundation's GNU General Public License.

More info:

The R Project for Statistical Computing

iL04 is an R package that offers functions to import and export several file formats between R and the RuG/L04 software, as well as a few tools for visualisation. To make full use of this package you need the MASS package as well.

MASS is installed by default with recent versions of R.

I would appreciate if anyone who downloads this software would drop me a message, and tell me briefly what he or she is using the software for, and how useful the software is. Please write to: p.c.j.kleiweg@rug.nl

You can find the package in the directory RuG-L04/R of the RuG/L04 software. See the download page

To install, run the shell command:

    R CMD INSTALL iL04_1.15.tar.gz

After installing iL04, restart R, and run the R commands below.

First, check if you have MASS installed:

    library(MASS)

If you don't have MASS, you get an error message, like:

    Error in library(MASS) : There is no package called `MASS'

You can install MASS, which is part of the VR bundle using the following command (you need a working internet connection):

    install.packages('VR')

Finally, run the command:

    help.start()

This will start your browser with the R introduction page. Under Reference, click on Packages, and look for iL04.

This requires at least R version 1.3.1

You can find the package in the directory RuG-L04/R of the RuG/L04 software. See the download page

To install, start R Gui, click on Packages in the menu, and select Install package from local zip file.

Check if you have MASS installed by running the following R command:

    library(MASS)

If you don't have MASS, you get an error message, like:

    Error in library(MASS) : There is no package called `MASS'

MASS is part of the VR bundle. To install VR, click on Packages in the menu, and select Install package from CRAN (you need a working internet connection). You'll get a list box with packages and bundles to choose from.

After installing, click on Help, and select R language (html). This will start your browser with the R introduction page. Under Reference, click on Packages, and look for iL04.