I haven't used pkg:kohonen, so this is just guessing:
1. are you using an old version of the package? 2. don't call the output of function som() 'som'. As people around here might say: would you call your iguana 'iguana'? 3. have you used str() on your object to check what it really contains? I would guess that it should be of class som and have a component 'distances'. If none of that helps then it's beyond me. -Peter Ehlers Brock Tibert wrote:
Hi All, I am still learning R, but making, IMO, great strides. I learned about Kohonen/Self-Organizing Maps in class and I would like to try to replicate some of the things we have seen in class. Below is my code. I am trying to create a u-matrix. In the documentation on page 9 it appears the type of plot, dist.neighbours should do the trick, however, I am getting an error: (Error in match.arg(type) : 'arg' should be one of "codes", "changes", "counts", "mapping", "property", "quality") Since I am new to R, I figure I am missing something obvious. Any help you can provide will be greatly appreciated! Thanks in advance, Brock library(kohonen) data("wines") wines.sc <- scale(wines) som <- som(wines.sc, grid=somgrid(5, 5, "hexagonal")) plot(som) plot(som, type="dist.neighbours" ) ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.