Hi there, How can I change the "xlab" and "ylab" in clusplot instead of "Component 1" and "Component 2"? It always gives me the following error message. Error in plot.default(x1[, 1], x1[, 2], xlim = xlim, ylim = ylim, xlab = "Component 1", : formal argument "ylab" matched by multiple actual arguments Thanks in advance. Haiyong