scale_linetype

scale_linetype(name=NULL, expand=c(0.05, 0.55), limits=NULL, breaks=NULL, labels=NULL, formatter=identity, drop=FALSE, ...)

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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
• expand: numeric vector of length 2, giving multiplicative and additive expansion factors
• 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
• drop: NULL

Returns

This function returns a scale object.

Examples

> ec_scaled <- data.frame( 
+   date = economics$date, 
+   rescaler(economics[, -(1:2)], "range") 
+ ) 
> ecm <- melt(ec_scaled, id = "date") 
>  
> qplot(date, value, data=ecm, geom="line", group=variable) 
  
> qplot(date, value, data=ecm, geom="line", linetype=variable) 
  
> qplot(date, value, data=ecm, geom="line", colour=variable) 
  
>  
> # See scale_manual for more flexibilit 

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© Hadley Wickham 2012