Usage
polyCub.SV(polyregion, f, ..., nGQ = 20, alpha = NULL, rotation = FALSE,
engine = "C", plot = FALSE)
Arguments
polyregion
a polygonal integration domain. The
following classes are supported:
"owin",
"gpc.poly",
"SpatialPolygon f
two-dimensional function. As its first argument
it must take a coordinate matrix, i.e. a numeric matrix
with two columns.
...
further arguments for f.
nGQ
degree of the one-dimensional Gauss-Legendre
quadrature rule (default: 20). See
gauss.quad in package
statmod. The nodes and weights up to degree 60 are
cached in polyCub plot
logical indicating if an illustrative plot of
the numerical integration should be produced.
alpha
base-line of the (rotated) polygon at $x
= \alpha$ (see Sommariva and Vianello (2007) for an
explication). If NULL (default), the midpoint of
the x-range of the polygon is chosen if no
rotation is performed, and otherwise
rotation
logical (default: FALSE) or a list
of points "P" and "Q" describing the
preferred direction. If TRUE, the polygon is
rotated according to the vertices "P" and
"Q", which
engine
character string specifying the
implementation to use. Up to polyCub version 0.4-3, the
two-dimensional nodes and weights were computed by R
functions and these are still available by setting
engine = "R". The new C-implementation is