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)
"ppp"
, or data
in any format acceptable to as.ppp()
.units="degrees"
, the default) or radians
(if units="radians"
) anti-clockwise from the positive $x$-axisbegin
and end
are expressed."none"
, "border"
, "bord.modif"
,
"isotropic"
, "Ripley"
, "translate"
,
"translation"
, domain
.TRUE
, the numerator and denominator of
each edge-corrected estimate will also be saved,
for use in analysing replicated point patterns."fv"
containing the estimated
function.Kest
) in which, instead of counting all
pairs of points within a specified distance $r$, we
count only the pairs $(x_i, x_j)$
for which the vector $x_j - x_i$
falls in a particular range of angles. 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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