Avoid Overplotting of Text in Ordination Diagram
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library(vegan) library(vegan) data(dune) sol <- metaMDS(dune) # use ordipointlabel - # here is an example where I added cex according to species frequencies: plot(sol, type = "n") cex.lab = colSums(dune > 0) / nrow(dune) + 1 col.lab = rgb(0.2, 0.5, 0.4, alpha = 0.6) ordipointlabel(sol, displ = "sp", col = col.lab, cex = cex.lab) # you could also use pointLabel() from maptools package: library(maptools) x = as.vector(sol$species[,1]) y = as.vector(sol$species[,2]) w = row.names(sol$species) plot(sol, type = "n") points(sol, displ = "species", cex = 1, pch = 4, col = 3) pointLabel(x, y, w, col = col.lab, cex = cex.lab)
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