K-means + heatmap
Clustering in R
SOM (Self-organizing map)
DTW (Dynamic Time Warping)
However, still feel not confident to some/many concepts in clustering. Following the study of Manduca Sexta, I will read more, including the following two references:
Different distance functions:
The C Clustering Library provided by Michiel de Hoon et al. (the authors of Cluster)
The expect output will be a more detailed post in clustering, esp. how to select the right distance functions and clustering methods according to different data type and questions.
To be continued...