cobs: mk.pt.constr – R documentation

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mk.pt.constr

COBS auxiliary for constructing pointwise constraint specifications

Description

COBS (cobs) auxiliary function for constructing the pointwise constraint specification list from the pointwise 3-column matrix (as used as argument in cobs).

Usage

mk.pt.constr(pointwise)

Arguments

pointwise

numeric 3-column matrix, see pointwise in cobs.

Value

A list with components

`n.equal`	number of equality constraints
`n.greater`	number of “greater” constraints
`n.smaller`	number of “smaller” constraints
`n.gradient`	number of gradient constraints

Unless the input pointwise was NULL, the result also has corresponding components:

`equal`	3-column matrix ofequality constraints
`greater`	3-column matrix of“greater” constraints
`smaller`	3-column matrix of“smaller” constraints
`gradient`	3-column matrix ofgradient constraints

Author(s)

Martin Maechler

Examples

## from  ?cobs:
 x <- seq(-1,3,,150)
 con <- rbind(c( 1,min(x),0), # f(min(x)) >= 0
              c(-1,max(x),1), # f(max(x)) <= 1
              c(0,  0,   0.5))# f(0)      = 0.5
 r <- mk.pt.constr(con)
 str(r)

cobs

Constrained B-Splines (Sparse Matrix Based)

v1.3-4

GPL (>= 2)

Authors

Pin T. Ng <Pin.Ng@nau.edu> and Martin Maechler

Initial release

2020-01-20