# S-Plus Version 3.4 Installed on Atom

S-Plus is a powerful interactive package for
statistical and graphical analysis. It is a combination of an
object-oriented programming language with powerful graphics capabilities,
and a large number of pre-programmed statistical routines. The
programmability of S-PLUS gives it extreme flexibility, which is why it is
very popular with statistical researchers. However, this flexibility can
be intimidating to the first time user.
**Using S-PLUS on Atom**

To start S-PLUS interactively on Atom, type Splus at the Atom prompt.

(the "atom %" is the shell prompt, thus it is not typed)

To get a graphical display in S-PLUS a "device" must
be initialized. In the X-Window environment, the easiest device to use is
the Motif device. To start this device, simply type the command
after S-PLUS has started. This command runs the function motif,
which opens graphics window and instructs S-PLUS to do all its graphing in
this window.

S-PLUS provides extensive help on all of the
built-in functions and datasets. In X-window, a window-based help utility is
started by issuing the command
**Web Resources on S-PLUS**
Because of its heavy use in the academic statistics
community, there are many web-based resources on S-PLUS. A small segment is
given here, highlighting the sites that are deemed most useful.

MathSoft is the developer and distributor of S-PLUS, thus this is the
"homepage" for S-PLUS.
**Notes on S-PLUS**, by B. Venables and D. Smith:

http://www.maths.lancs.ac.uk/~smithdm1/SplusNotes2.2.ps

In order to run S-Plus, it is necessary to have an X
window computer or an X window simulator program.
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