Fig. 1.

Global view of the metabolomics data compendium. a A flowchart and a summary of our approach. b A correlation heatmap of 448 metabolite measurements of relative normalized abundance from both RPLC-Pos-dMRM and HILIC-Neg-dMRM methods along with unsupervised hierarchical clustering. The color key is based on Pearson correlation coefficients. c A correlation heatmap of 627 samples along with unsupervised hierarchical clustering. The color code is the same as in b. See Supplementary Table S1 for the data used for b, c. d Dendrogram trees of Cluster #1 and Cluster #2 at the height of 6. The suffix, “rp”, in the metabolite names stands for RPLC-Pos-dMRM and “hn” for HILIC-Neg-dMRM