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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: J Neuroimaging. 2017 Dec 5;28(1):86–94. doi: 10.1111/jon.12486

Figure 4.

Figure 4

PCA and LDA of tract-wise median DTI scalars and T2 in the TBSS-positive ROI. Panel a shows PCA, reduced to 2 dimensions, with the original variables labelled as projections. The projections are labelled (and in solid color) if their projection normal to the LDA hyperplane is > 0.15, which implies that more than 15% of the variance in that variable is accounted for by group. Text labels are colored by myelogenesis group. Panel b shows the PCA with data points labelled by group, as well as the LDA hyperplane as a solid line. Abbreviations used: PCA = principal component analysis; LDA = linear discriminant analysis; VP = very preterm; LP = late preterm. See Table 2 for WM tract abbreviations.