Closed:Distance Matrix in R

Question

[vschultz]

Hi!

I'm trying to write codes for these steps in R.

1. Find two clusters C_i and C_j such that d_ij is minimum value.
2. Let C_k => C_i & C_j.
3. Add a vertex connecting C_i, C_j and place it at height d_ij/2.
4. Delete C_i and C_j; Update the distance matrix by computing the average distance between each pair of clusters.
5. Terminate when there's a single cluster remains.

I have a distance matrix;

and I have to merge the col-row corresponding to the minimum value in each step and calculate the average distance for all and repeat it again and again until a single cluster (0) remains.

I don't know what to do or how to do. Could you help me?

Thanks