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Hi all, I have run a pca and want to plot the samples multivariate space using the sample numbers. In addition, I would like to color code the sample numbers by group, but can't find a way to color-code the sample numbers by group. So, I have to do it in two separate steps: plot(bulbil.pca, col=as.numeric(group.bulbil[,3]), pch=as.numeric(group.bulbil[,3])) # group.bulbil[,3] is grouping plot(x_w,y_w,type="n") text(x_w,y_w,labels=group.bulbil[,1]) ##group.bulbil[,1] contains sample numbers Is there a way to plot the sample numbers and color-code them on one graph? T...