Description Usage Arguments Details Author(s) Examples
Create, test for, an coerce to, mvp
objects
1 2 3 4 5 6 7 8 9 10 11 12 13 14 
vars 
List of variables comprising each term of an 
powers 
List of powers corresponding to the variables of the

coeffs 
Numeric vector corresponding to the coefficients to each
element of the 
x 
Object to be coerced to or tested for being class 
Function mvp()
is the formal creation mechanism for mvp
objects. However, it is not very userfriendly; it is better to use
as.mvp()
in daytoday use.
Function is_ok_mvp()
checks for consistency of its arguments.
Robin K. S. Hankin
1 2 3 4 5 6 7 8 9 10 11 12 13  mvp(list("x" , c("x","y"), "a",c("y","x")),list(1,1:2,3,c(1,4)),1:4)
## Note how the terms appear in an arbitrary order, as do
## the symbols within a term.
kahle < mvp(
vars = split(cbind(letters,letters[c(26,1:25)]),rep(seq_len(26),each=2)),
powers = rep(list(1:2),26),
coeffs = 1:26
)
## again note arbitrary order of terms and symbols within a term

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