Cluster Lines by Genotype
This R program will cluster the currently selected lines according to their alleles for all markers, using "pam" (Partitioning Around Medoids). Analysis code VisualCluster.R.
The results will be displayed as a two-dimensional PCA plot with the clusters color-coded. If you enter some line names below, the legend will indicate which cluster they fall into.
When you have examined the results you can select the clusters you want to work with.