rplotsom
R package Kohonen - how to plot hexagons instead of circles as in Matlab SOM toolbox?
Is it possible to plot the SOM map (package Kohonen) with hexagons as elementary forms instead of circles? Now the different plottings (count, changes etc.) are plotted as circles with white surroundings.
The aim is to create SOM visuals similar to Matlab SOM Toolbox.
This discussion suggests hexagon plotting would not have been possible 2010.
Solution
I don't have sufficient reputation to comment on @NBremer's answer. I have extended the above code to allow visualization of large component planes and u-matrices for output from the R "kohonen" library. Code and worked examples available here:
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