dissimilarities
Description
The package provides efficient and user-friendly functions for creating,
manipulating, and subsetting “dist” objects, which are commonly used in
clustering applications in R.
The current version includes the following features:
- Dist2Mat: Converting a “dist” object to a numeric matrix.
- subDist2Dist: Subsetting a “dist” object to a “dist” object without
explicit conversion to a numeric matrix.
- subDist2Mat: Subsetting a “dist” object to a numeric “matrix”
without explicit conversion to a numeric matrix.
- subCols: Subsetting a “dist” object to a numeric “matrix” based on
some column (equivalently, row) indices.
- fastDist: Computing a “dist” object given a numeric matrix.
- fastDistAB: Computing a numeric “matrix” storing pairwise distances
between rows in two matrices.
- get2dFrom1d: Computing 2D-indexing given 1D-indexing (as used in R’s
“dist” objects).
- get1dFrom2d: Computing 1D-indexing given 2D-indexing (a row-column
pair).
- expandDist: Expanding a “dist” object given new data.
Feature(s) under development:
- Providing additional distance functions in fastDist and fastDistAB.
The current version only supports popular metrics, namely “euclidean”,
“manhattan”, “minkowski”, “maximum”, “canberra”, and “cosine”.
### Installation
To download the package, use the following R code:
library(devtools)
install_github("edelweiss611428/dissimilarities")