demoCluster
PURPOSE 
Clustering demo.
SYNOPSIS 
This is a script file.
DESCRIPTION 
CROSS-REFERENCE INFORMATION 
This function calls:
- demoGenData Generate data drawn form a mixture of Gaussians.
- distMatrixShow Useful visualization of a distance matrix of clustered points.
- kmeans2 Fast version of kmeans clustering.
- meanShift meanShift clustering algorithm.
- pdist2 Calculates the distance between sets of vectors.
- visualizeData Project high dim. data unto principal components (PCA) for visualization.
- im Function for displaying grayscale images.
This function is called by:
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