clupoints_n_1_template: Create points from their projections on a cluster-supporting...

In clugenr: Multidimensional Cluster Generation Using Support Lines

Create points from their projections on a cluster-supporting line

Description

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Generate points from their \mjseqnn-dimensional projections on a cluster-supporting line, placing each point on a hyperplane orthogonal to that line and centered at the point's projection. The function specified in dist_fn is used to perform the actual placement.

Usage

clupoints_n_1_template(projs, lat_disp, clu_dir, dist_fn)

Arguments

projs	Point projections on the cluster-supporting line (\mjeqnp \times np x n matrix).
lat_disp	Dispersion of points from their projection.
clu_dir	Direction of the cluster-supporting line (unit vector).
dist_fn	Function to place points on a second line, orthogonal to the first.

Details

This function is used internally by clupoints_n_1 and may be useful for constructing user-defined final point placement strategies for the point_dist_fn parameter of the main clugen function.

Value

Generated points (\mjeqnp \times np x n matrix).

Note

This function is stochastic. For reproducibility set a PRNG seed with set.seed.

Examples

set.seed(123)
ctr <- c(0, 0)
dir <- c(1, 0)
pdist <- c(-0.5, -0.2, 0.1, 0.3)
proj <- points_on_line(ctr, dir, pdist)
clupoints_n_1_template(proj, 0, dir, function(p, l) stats::runif(p))

clugenr documentation built on Aug. 8, 2025, 6:05 p.m.