Remove 'a' from legend when using aesthetics and geom_text

Set show.legend = FALSE in geom_text:

ggplot(data = iris,       aes(x = Sepal.Length, y = Sepal.Width, colour = Species,           shape = Species, label = Species)) +     geom_point() +    geom_text(show.legend = FALSE)

The argument show_guide changed name to show.legend in ggplot2 2.0.0 (see release news).

Pre-ggplot2 2.0.0:

With show_guide = FALSE like so...

ggplot(data = iris, aes(x = Sepal.Length, y = Sepal.Width , colour = Species,                        shape = Species, label = Species ), size = 20) + geom_point() +geom_text(show_guide  = FALSE)

I had a similar problem. Simon's solution worked for me but a slight twist was required. I did not realise that I need to add "show_guide = F" to geom_text's arguments, rather than replace with it the existing arguments - which is what Simon's solution shows. For a ggplot2 noob like me this was not that obvious. A proper example would have used the OP's code and just added the missing argument like this:

..geom_text(aes(label=Species), show_guide = F) +..

We can use guide_legend(override.aes = aes(...)) to hide the 'a' in the legend.

Below is a short example of how you might use guide_legend()

library(ggrepel)#> Loading required package: ggplot2d <- mtcars[c(1:8),]p <- ggplot(d, aes(wt, mpg)) +  geom_point() +  theme_classic(base_size = 18) +  geom_label_repel(    aes(label = rownames(d), fill = factor(cyl)),    size = 5, color = "white"  )# Let's see what the default legend looks like.p

# Now let's override some of the aesthetics:p + guides(  fill = guide_legend(    title = "Legend Title",    override.aes = aes(label = "")  ))

^{Created on 2019-04-29 by the reprex package (v0.2.1)}