reduce.cex {directlabels}

reduce cex

Description

If edges of the text are going out of the plotting region, then decrease cex until it fits. We call calc.boxes inside, so you should set cex before using this.

Usage

reduce.cex(sides)

Arguments

sides

string: lr (left and right) or tb (top and bottom).

Author(s)

Toby Dylan Hocking

Examples

if(require(lars) && require(ggplot2)){
  data(diabetes,package="lars",envir=environment())
  X <- diabetes$x
  colnames(X) <- paste(colnames(X), colnames(X))
  fit <- lars(X,diabetes$y,type="lasso")
  beta <- scale(coef(fit),FALSE,1/fit$normx)
  arclength <- rowSums(abs(beta))
  path.list <- list()
  for(variable in colnames(beta)){
    standardized.coef <- beta[, variable]
    path.list[[variable]] <-
      data.frame(step=seq_along(standardized.coef),
                 arclength,
                 variable,
                 standardized.coef)
  }
  path <- do.call(rbind, path.list)
  p <- ggplot(path,aes(arclength,standardized.coef,colour=variable))+
    geom_line(aes(group=variable))
  ## the legend isn't very helpful.
  print(p)
  ## add direct labels at the end of the lines.
  direct.label(p, "last.points")
  ## on my screen, some of the labels go off the end, so we can use
  ## this Positioning Method to reduce the text size until the labels
  ## are on the plot.
  direct.label(p, list("last.points",reduce.cex("lr")))
  ## the default direct labels for lineplots are similar.
  direct.label(p)
}