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 and TRUE 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.

Examples

# NOT RUN {
S <- spray(partitions::blockparts(rep(2,4),3,TRUE))

constant(S)

constant(S) <- 33

S

# }

Documentation reproduced from package spray, version 1.0-10, License: GPL (>= 2)

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