Figure 3
From: Circadian signatures in rat liver: from gene expression to pathways
The five significant clusters identified by a consensus clustering analysis [19]using δ = 0.65. The pathway activity level (PAL) of pathways represents the presented curves and the exact reverse curves; PAL = (-) PAL. The signs of PAL are chosen so that PAL has the similar patterns for a better representation and clustering purposes. The centroids of each cluster is shown with the red error bars, the fitted sinusoidal model to the centroids of each cluster is depicted in white.