search for: 25000x50

Hi all, I've got clusters and would like to match individual records to each cluster based on a sum of squares deviation. For each cluster and individual, I've got 50 variables to use (measured in the same way). Matrix 1 is individuals and is 25000x50. Matrix 2 is the cluster centroids and is 100x50. The same variables are found in each matrix in the same order. I'd like to calculate the 'distance' of matrix 1 to matrix 2 and get a ranking of matrix 2's distances (and row IDs 1 to 100) sorted by distance. I tried using the R...