Figure 8
The heatmap is integrated with the hierarchy clustering and dendrogram. Red line is used to indicate the current level of clustering for both gene and sample. (a) The gene-level clustering was almost at the top of the tree. This created two clusters for the gene expression, as seen by the two different colours, in the row headers. (b) The level for gene clustering was lower to 10, which is about the middle of the tree hierarchy. At this stage, there are eight distinct clusters can be found for the gene. A similar study can be done for the sample hierarchy. Heatmap and dendrogram are very popular for gene expression visualisation.
