linearpcfcross(X, i, j, r=NULL, ..., correction="Ang")
"lpp"
which
must be a multitype point pattern (a marked point pattern
whose X
from which distances are measured.
Defaults to the first level of marks(X)
.X
to which distances are measured.
Defaults to the second level of marks(X)
."none"
or "Ang"
. See Details.density.default
to control the kernel smoothing."fv"
(see fv.object
).i
is interpreted as a
level of the factor marks(X)
. Beware of the usual
trap with factors: numerical values are not
interpreted in the same way as character values.pcfcross
for a point pattern on a linear network (object of class "lpp"
). The argument i
will be interpreted as
levels of the factor marks(X)
.
If i
is missing, it defaults to the first
level of the marks factor.
The argument r
is the vector of values for the
distance $r$ at which $g_{ij}(r)$
should be evaluated.
The values of $r$ must be increasing nonnegative numbers
and the maximum $r$ value must not exceed the radius of the
largest disc contained in the window.
linearpcfdot
,
linearpcf
,
pcfcross
.data(chicago)
g <- linearpcfcross(chicago, "assault")
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