rspray

From spray v1.0-7 by Robin K S Hankin

Creates random spray objects as quick-and-dirty examples of multivariate polynomials

rspray(n, vals = 1, arity = 3, powers = 0:2)

n: Number of distinct rows (maximum); repeated rows are merged (argument addrepeats is TRUE)
vals: Values to use for coefficients
arity: Arity of the spray; the number of columns in the index matrix
powers: Set from which to sample the entries of the index matrix

Returns a spray object

If the index matrix contains repeated rows, the returned spray object will contain fewer than n entries

# NOT RUN {
rspray(10)

rspray(4)*rspray(3,rnorm(3))

rspray(3,arity=7,powers=-2:2)^3

rspray(1000,vals=rnorm(1000))

# }

Documentation reproduced from package spray, version 1.0-7, License: GPL (>= 2)

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