som_dimR {SOMEnv}

Calculate map dimensions

Description

Generate SOM map dimensions according to Vesanto heuristic rules based on the first two eigenvalues of the experimental data and their related eigenvectors The function has been coded in R code starting from som_dim.m script present in somtoolbox for Matlab by Vesanto and adapted for the use in the shiny app

Usage

som_dimR(dataset, type = "regular")

Arguments

dataset

Experimental data

type

Either "regular", "small" or "big" map (default ="regular")

Value

This function returns a list containing the number of rows, columns and overall map units

Author(s)

Sabina Licen, Pierluigi Barbieri

References

J. Vesanto, J. Himberg, E. Alhoniemi, J. Parhankagas, SOM Toolbox for Matlab 5, Report A57, 2000, Available at: www.cis.hut.fi/projects/somtoolbox/package/papers/techrep.pdf

See Also

eigen, cor

Examples

library(datasets)
som_dimR(iris[,1:4], type="small")