constant
From spray v1.0-10
by Robin K S Hankin
Get or set the constant term of a spray object
The constant term of a spray object is the coefficient corresponding to an index of all zeros. These functions get or set the constant of a spray object.
- Keywords
- symbolmath
Usage
constant(S,drop=FALSE)
constant(S) <- value
Arguments
- S
Object of class spray
- value
Numeric value to set the constant coefficient to
- drop
Boolean, with default
FALSE
meaning to return a spray object andTRUE
meaning to return a numeric value
Value
In function constant()
, return the coefficient, or a constant
multivariate polynomial, depending on the value of drop
.
Note
The behaviour of drop
(sort of) matches that of the spray extractor method.
See Also
Examples
# NOT RUN {
S <- spray(partitions::blockparts(rep(2,4),3,TRUE))
constant(S)
constant(S) <- 33
S
# }
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