[R] ggplot2: less than equal sign

[soon yi]

Hi

I am trying to add a less than equal sign to a plot. I have previously done
this using unicode but is not working in this instance. Any suggestions
would be great

thanks

example code:

library(ggplot2)
df<-data.frame(vis=c(0,0,1,1) , count=c(10,15,20,10) , grp=c(0,1,0,1))
df$grp <-factor(df$grp ,levels=c(0,1) , labels =c("x \u2265 10" , "x > 10"))
ggplot(df, aes(x = factor(vis), y=count , fill=grp))  + geom_bar(stat =
"identity")




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