Hi
I have written a whole bunch of methods for objects of class "octonion".
[
an octonion is a single column of an eight-row matrix. Octonions have
their own multiplication rules and are a generalization of quaternions,
which are columns of a four-row matrix.
]
So far I've done about a dozen generic functions such as seq.octonion(),
rep.octonion(), [<-.octonion(), and so on and so on.
Very nearly all of these functions are applicable to objects of
class "quaternion".
So, for example, I have a generic function Im.octonion():
R> Im.octonion
function (x)
{
Re(x) <- 0
return(x)
}
The definition of Im.quaternion() is exactly the same.
Sometimes the return value is an octonion:
Conj.octonion
function (x)
{
x <- as.matrix(x)
x[-1, ] <- -x[-1, ]
return(as.octonion(x))
}
So the last line of Conj.quaternion() would be "return(as.quaternion
(x))"
but would be otherwise identical.
A similar story holds for each of maybe twenty generic functions.
Nearly all the Rd files are similarly identical: the word "octonion"
replaces the word "octonion". I suppose "A" changes to "An" as well.
There is a small number of functions and datasets that are specific
to octonions.
What is Best Practice in this situation? I don't want to edit two
separate
packages in tandem. Is there a mechanism for doing what I want
in the context of a bundle?
--
Robin Hankin
Uncertainty Analyst
National Oceanography Centre, Southampton
European Way, Southampton SO14 3ZH, UK
tel 023-8059-7743
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