Fig. 4
Correlation heatmap of the 282 lipids in each ethnic group. The correlation heatmap between 282 lipids in the a Chinese; b Malays; and c Indians. The correlation was calculated by using concentration of the lipids via Pearson’s correlation, r 2. The lipids are first categorized into lipid category and followed by lipid classes. In each of the lipid class, the lipid species are ordered according to their carbon chain length and degree of unsaturation (number of double bonds). The intensity of the color reflects the magnitude of the correlation, in which the white color means r 2 = 0 and red color means r 2 = 1
