Computes pairwise vectors of a 2d or 3d point pattern. Returns
circular- or spherical coordinates, depending on the dimension.
Usage
pairwise_vectors(x, from, to, asMatrix = FALSE, as.xyz = FALSE)
Arguments
- x
matrix of coordinates.
- from
Indices from which to compute
- to
Indices to which to compute
- asMatrix
return n x n matrices
- as.xyz
return as xyz-coordinates instead of polar/spherical
Details
Default is to return the upper triangle (without diagonal) of
pairwise distance and angle matrices.
Result will have 2 or 3 columns, where first is the distance
and 2(:3) are angle(s).