The rJava package gives access to low-level R functions to the Java interface, but it is not provided with
TERR. These instructions help you prepare your computer to use rJava.
Prerequisites
The rJava package requires the following.
- A bit-matching 32-bit or 64-bit version of the Java Runtime Environment (JRE), version 6 or later is installed.
- The system variable
JAVA_HOME is set. Follow the instructions for
Setting JAVA_HOME
if you are unsure.
Attention: These instructions are for installing the rJava package for use with
TERR 4.2 or later. If you are using an earlier version, and you cannot update your version of
TERR, see the release notes for more information for the verison of
TERR you are running.
- For
TERR version 3.1 and earlier, the rJava package does not work. To use rJava, update your version of
TERR.
- For
TERR version 3.2, you must use a build of rJava from
TRAN. See that version's release notes for more information.
Perform this task in the
TERR console or in
TERR running under RStudio.
-
At the command prompt, type
install.packages("rJava").
Note that rJava is installed from CRAN to the
site-library directory.
-
At the command prompt, type
library(rJava).
For example:
> library(rJava)
The following object(s) are masked _from_ 'package:utils':
head, str, tail
The following object(s) are masked _from_ 'package:methods':
new, show
The following object(s) are masked _from_ 'base':
anyDuplicated, duplicated, rev, sort, unique
The rJava package is now in your search path.
-
At the command prompt, type
searchpaths().
For example:
> searchpaths()
[1] ".GlobalEnv"
[2] "C:/Program Files/TIBCO/terr43/site-library/rJava"
[3] "C:/Program Files/TIBCO/terr43/library/stats"
[4] "C:/Program Files/TIBCO/terr43/library/graphics"
[5] "C:/Program Files/TIBCO/terr43/library/grDevices"
[6] "C:/Program Files/TIBCO/terr43/library/utils"
[7] "C:/Program Files/TIBCO/terr43/library/methods"
[8] "C:/Program Files/TIBCO/terr43/library/base"
The absolute file path is returned for each package in the current environment. Note that by default, the newly-loaded rJava is listed second in the search path.
