pairdist.default(X, Y=NULL, ..., method="C")
X
and Y
would be
numeric vectors of equal length.
Alternatively Y
may be omitted and X
may be
a list with two components"C"
and "interpreted"
.
Usually not specified.[i,j]
entry is the distance
between the points numbered i
and j
.pairdist
. The arguments X
and Y
must determine
the coordinates of a set of points. Typically X
and
Y
would be numeric vectors of equal length. Alternatively
Y
may be omitted and X
may be a list with two components
named x
and y
, or a matrix or data frame with two columns.
The argument method
is not normally used. It is
retained only for checking the validity of the software.
If method = "interpreted"
then the distances are
computed using interpreted R code only. If method="C"
(the default) then C code is used. The C code is somewhat faster.
crossdist
,
nndist
,
Kest
x <- runif(100)
y <- runif(100)
d <- pairdist(x, y)
d <- pairdist(cbind(x,y))
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