On Wed, 7 May 2014, Therneau, Terry M., Ph.D. wrote:

Hadley asked about the Blue book; my shelf still has the earlier brown book
Becker and Chambers, 1984, S: An interactive environment for data analysis and graphics.

The manual page for precedence is

$               component select
%x              special operator
-               unary minus
:               sequence operator
^ **            exponentiation
* /             mult/div
+ -             add/sub
< > <= >= == != logical
!               not
& |             and/or
<- ->           assignment


which did lead to some head scratching after plotting exp(-x^2) :-)

luke

Terry Therneau

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--
Luke Tierney
Chair, Statistics and Actuarial Science
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa                  Phone:             319-335-3386
Department of Statistics and        Fax:               319-335-3017
   Actuarial Science
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