scale_shape

scale_shape(name=NULL, solid=TRUE, limits=NULL, breaks=NULL, labels=NULL, formatter=identity, ...)

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Parameters

Parameters control the appearance of the scale. 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.

• name: name of scale to appear in legend or on axis. Maybe be an expression: see ?plotmath
• solid: NULL
• limits: numeric vector of length 2, giving the extent of the scale
• breaks: numeric vector indicating where breaks should lie
• labels: character vector giving labels associated with breaks
• formatter: NULL

Returns

This function returns a scale object.

Examples

> dsmall <- diamonds[sample(nrow(diamonds), 100), ] 
>  
> (d <- qplot(carat, price, data=dsmall, shape=cut)) 
  
> d + scale_shape(solid = TRUE) # the default 
  
> d + scale_shape(solid = FALSE) 
  
> d + scale_shape(name="Cut of diamond") 
  
> d + scale_shape(name="Cut of\ndiamond") 
  
>  
> # To change order of levels, change order of 
> # underlying factor 
> levels(dsmall$cut) <- c("Fair", "Good", "Very Good", "Premium", "Ideal") 
>  
> # Need to recreate plot to pick up new data 
> qplot(price, carat, data=dsmall, shape=cut) 
  
>  
> # Or for short: 
> d %+% dsmall 
  

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© Hadley Wickham 2010