Im trying to create a three way interaction plot but my x axis labels not according to my independent variable of P treatment which is "0,3,6,12,36".
I have tried to put in the code, levels = c("0","3","6","12","36") but it throws out this....
ggplot(tg2, aes(
x = factor(interaction(cultivar, P),levels = c("0","3","6","12","36")),
y = shoot, fill = waterlogg)) +
geom_bar(stat="identity", position = "dodge",colour="black",
size=.1)+
geom_errorbar(aes(ymin=shoot-se, ymax=shoot+se),
size=0.3,
width=.2,
position=position_dodge(.9))+
scale_x_discrete(drop = FALSE)+
facet_wrap(~cultivar, ncol=2)