geom_rect

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

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Aesthetics

The following aesthetics can be used with geom_rect. Aesthetics are mapped to variables in the data with the aes function: geom_rect(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
xmin	required
xmax	required
ymin	required
ymax	required
colour	NA	brewer, gradient, gradient2, gradientn, grey, hue, identity, manual
fill	grey20	brewer, gradient, gradient2, gradientn, grey, hue, identity, manual
size	0.5	identity, manual, size
linetype	1	identity, linetype, manual
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

> df <- data.frame( 
+   x = sample(10, 20, replace = TRUE), 
+   y = sample(10, 20, replace = TRUE) 
+ ) 
> ggplot(df, aes(xmin = x, xmax = x + 1, ymin = y, ymax = y + 2)) + 
+ geom_rect() 
  

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© Hadley Wickham 2010