I am preparing a PCoA analysis graph and having a hard time setting the scales for the PC1 and PC2. The numbers on the axis are shown to the 6 digits and in a continuous level which is unnecessary. Here is the code that I am using.. First by selecting a certain column and then visualizing for PC1 and PC2
data_pcoa_membrane <- filter(data_pcoa_scores, stream == "Membrane")
ggplot(data_pcoa_membrane, aes(PC1, PC2, colour = year, shape = year)) +
@paleolimbot, what do you think ?