som_initR {SOMEnv}

Calculate initialization matrix for SOM training

Description

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

Usage

som_initR(dataset, Row, Col, munits)

Arguments

dataset

Experimental data

Row

Number of SOM map rows

Col

Number of SOM map columns

munits

Number of SOM map units (Row*Col)

Value

This function returns an initialization matrix for SOM training

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

Examples

SOMdim<-som_dimR(iris[,1:4], type="small")
SOMinit<-som_initR(iris[,1:4],SOMdim$Row,SOMdim$Col,SOMdim$munits)