pca

It’s hard to say without knowing exactly what your data look like, but perhaps something like this would work: cols <- rainbow(17)[as.factor(gtex_pm$tissue)] plot(pc_gtex$x[,1], pc_gtex$x[,2], col=cols, main = “PCA”, xlab = “PC1”, ylab = “PC2”) 4 solved how to color points in 17 colors based on principal component? [closed]