geom_text

geom_text(mapping=NULL, data=NULL, stat="identity", position="identity", ...)

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Aesthetics

The following aesthetics can be used with geom_text. Aesthetics are mapped to variables in the data with the aes function: geom_text(aes(x = var)). Note that you do not need quotes around the variable name.

Scales control how the variable is mapped to the aesthetic and are listed after each aesthetic.

Aesthetic	Default	Related scales
x	required	continuous, date, datetime, discrete
y	required	continuous, date, datetime, discrete
label	required
colour	black	brewer, gradient, gradient2, gradientn, grey, hue, identity, manual
size	5	identity, manual, size
angle	0
hjust	0.5
vjust	0.5
alpha	1

Layers are divided into groups by the group aesthetic. By default this is set to the interaction of all categorical variables present in the plot.

Parameters

Parameters control the appearance of the geom. In addition to the parameters listed below (if any), any aesthetic can be used as a parameter, in which case it will override any aesthetic mapping.

Returns

This function returns a layer object.

Examples

> p <- ggplot(mtcars, aes(x=wt, y=mpg, label=rownames(mtcars))) 
>  
> p + geom_text() 
  
> p <- p + geom_point() 
>  
> # Set aesthetics to fixed value 
> p + geom_text() 
  
> p + geom_point() + geom_text(hjust=0, vjust=0) 
  
> p + geom_point() + geom_text(angle = 45) 
  
>  
> # Add aesthetic mappings 
> p + geom_text(aes(colour=factor(cyl))) 
  
> p + geom_text(aes(colour=factor(cyl))) + scale_colour_discrete(l=40) 
  
>  
> p + geom_text(aes(size=wt)) 
  
> p + geom_text(aes(size=wt)) + scale_size(to=c(3,6)) 
  
>  
> # Use qplot instead 
> qplot(wt, mpg, data = mtcars, label = rownames(mtcars), 
+    geom=c("point", "text")) 
  
> qplot(wt, mpg, data = mtcars, label = rownames(mtcars), size = wt) + 
+   geom_text(colour = "red") 
  

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© Hadley Wickham 2010