Hi Sia,
As per my understanding, you are implementing hierarchical clustering in MATLAB and have following concerns:
- How to use original data points as nodes.
- How to display all nodes in a dendrogram.
Addressing your first concern, hierarchical clustering can be performed directly on your data points using the linkage function. This treats each data point as an initial cluster and merges them hierarchically. Here's a sample MATLAB script to achieve this:
% Sample data
data = rand(2000, 12);
% Compute distance matrix
distMatrix = pdist(data);
% Perform hierarchical clustering
Z = linkage(distMatrix, 'average');
For your second query, by default, the dendrogram function displays up to 30 leaf nodes. To display the entire tree, you can use:
dendrogram(Z, 0);
Here, "Z" is the matrix generated by the linkage function. Setting the second argument to "0" allows the dendrogram to display all nodes.
For more information, refer to following documentation links:
- pdist: https://mathworks.com/help/releases/R2021b/stats/pdist.html
- linkage: https://mathworks.com/help/releases/R2021b/stats/linkage.html
- dendrogram: https://mathworks.com/help/releases/R2021b/stats/dendrogram.html
Hope this helps
