Fig. 2: Heart shape component summary.
From: Genetic basis of right and left ventricular heart shape

Visualizations of the heart shape components captured by principal component analysis. From left to right on each row, the following are indicated: −2 and +2 standard deviations from the mean shape of the PC (bottom row), the PC number and estimated biological feature captured, heat-mapped visualizations of the regional shape changes observed in the PC from anterior, posterior, and basal view angles. In this, a warm color indicates topological variation in the positive direction of the PC, and a cool color indicates variation in the negative direction. In this figure we display PCs 1-11. PC, principal component; RV, right ventricular; LV, left ventricular. The figure was created using Matlab R2022a.