cmdscale_landmarks {lmds}

Perform MDS on landmarks and project other samples to the same space

Description

Perform MDS on landmarks and project other samples to the same space

Usage

cmdscale_landmarks(dist_2lm, ndim = 3, rescale = TRUE, ...)

Arguments

dist_2lm

Distance matrix between the landmarks and all the samples in original dataset

ndim

The number of dimensions

rescale

Whether or not to rescale the final dimensionality reduction (recommended)

...

Extra params to pass to irlba::irlba()

Value

The dimensionality reduction in the form of a ncol(dist_2lm) by ndim matrix.

Examples

library(Matrix)
x <- as.matrix(iris[,1:4])
dist_2lm <- select_landmarks(x)
cmdscale_landmarks(dist_2lm)