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A directional counterpart of Ripley's
Ksector(X, begin = 0, end = 360, ...,
units = c("degrees", "radians"),
r = NULL, breaks = NULL,
correction = c("border", "isotropic", "Ripley", "translate"),
domain=NULL, ratio = FALSE, verbose=TRUE)
An object of class "fv"
containing the estimated
function.
The observed point pattern,
from which an estimate of "ppp"
, or data
in any format acceptable to as.ppp()
.
Numeric values giving the range of angles inside which
points will be counted. Angles are measured in degrees
(if units="degrees"
, the default) or radians
(if units="radians"
) anti-clockwise from the positive
Ignored.
Units in which the angles begin
and end
are expressed.
Optional. Vector of values for the argument
This argument is for internal use only.
Optional. A character vector containing any selection of the
options "none"
, "border"
, "bord.modif"
,
"isotropic"
, "Ripley"
, "translate"
,
"translation"
, "none"
, "good"
or "best"
.
It specifies the edge correction(s) to be applied.
Alternatively correction="all"
selects all options.
Optional window. The first point domain
.
Logical.
If TRUE
, the numerator and denominator of
each edge-corrected estimate will also be saved,
for use in analysing replicated point patterns.
Logical value indicating whether to print progress reports and warnings.
Adrian Baddeley Adrian.Baddeley@curtin.edu.au
Rolf Turner rolfturner@posteo.net
and Ege Rubak rubak@math.aau.dk
This is a directional counterpart of Ripley's Kest
) in which, instead of counting all
pairs of points within a specified distance
This can be used to evaluate evidence for anisotropy
in the point pattern X
.
Kest
K <- Ksector(swedishpines, 0, 90)
plot(K)
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