NA's are being plotted in boxplot ggplot2
I'm trying to plot a v. simple boxplot in ggplot2. I have species richness vs. landuse class. However, I have 2 NA's in my data. For some strange reason, they're being plotted, even when they're being understood as NA's by R. Any suggestion to remove them? The code I'm using is: ggplot(data, aes(x=luse, y=rich))+ geom_boxplot(mapping = NULL, data = NULL, stat = "boxplot", position = "dodge", outlier.colour = "red", outlier.shape = 16, outlier.size = 2, notch = F, notchwidth = 0.5)+ scale_x_discrete("luse", drop=T)+ geom_smooth(method="loess",aes(group=1)) However, the graph includes 2 NA's for