Plot hexagonal Kohonen maps

Description

The package provides a function som.plot() for generating high-quality plots of hexagonal self-organising maps (SOMs), which have been created with Teuvo Kohonen's SOM_PAK software.

Details

Two files are necessary for plotting the result of a SOM_PAK run:

• The output file of visual provides the mapping of input patterns to the codebook vectors.

• The input file holds all patterns of the dataset with class information in the last column.

A visualisation with default parameters can be created by calling the function som.plot( visfile, datfile). The plot can be customised, by providing additional arguments for colouring, scaling, orientation or legend.

Author(s)

Benjamin Schulz, Andreas Dominik Maintainer: <andreas.dominik@mni.fh-giessen.de>

References

Schulz, B., Mauthe, T., Dominik, A., 2010. Visualisation of Kohonen Maps using R. THM University of Applied Sciences, Giessen, Germany Website, [Online]. Available at: http://www.life-science-it.org/pages/research/projectSomplot.html [Accessed 19 May 2011]. and http://www.bioconductor.org/packages/2.5/bioc/html/hexbin.html

Results