scale_continuous {ggplot} | R Documentation

## Scale: general continuous (incl. transformations)

### Description

Transform scale with a monotone function

### Usage

    scale_continuous(variable="x", transform=trans_none, range=c(NA,NA), expand=c(0, 0), breaks=NULL, to=NULL)

### Arguments

`variable` | variable name
`transform` | vector of length two, first element the transforming function and the second its inverse
`range` | range of values to display on guides
`expand` | expansion factor for guides
`breaks` | manually specified breaks to use
`to` | if non-null, scale variable to this range after transformation

### Details

You shouldn't call this function yourself. Please use one of:

- `scsize`
- `scgradient`
- `pscontinuous`

  The continuous scale is the most complicated of the scale functions as it accepts so many options.

  Making pretty axis labels for transformed data isn't a trivial problem. Here I use a simple heuristic, and compute pretty breaks on the transformed range and then back transform to the original scale.

  There are a few common transformation vectors defined: `trans_log10`, `trans_log2`, `trans_sqrt`, `trans_inverse`

  ### Value

  modified plot object

  ### Author(s)

  Hadley Wickham <h.wickham@gmail.com>

  ### Examples

  [Package ggplot version 0.2.2 Index]