R: Coordinates and Positions for Chronological Objects

scale {chron} | R Documentation

## Coordinates and Positions for Chronological Objects

### Description

`chron_trans` is a ggplot2 transformer for `chron`. `scale_x_chron` and `scale_y_chron` are ggplot2 scales.

### Usage

      chron_trans(format = "%Y-%m-%d", n = 5)
      scale_x_chron(..., format = "%Y-%m-%d", n = 5)
      scale_y_chron(..., format = "%Y-%m-%d", n = 5)

### Arguments

`format` | format string as described in `strptime`.
`n` | Approximate number of axis ticks.
`...` | Passed to `scale_x_continuous`.

### Examples

    if(require("ggplot2")) {
        dd <- data.frame(tt = chron(1:10), value = 101:110)
        p <- ggplot(dd, aes(tt, value)) +
                 geom_point() + scale_x_chron(format = "%m-%d")
        print(p)
    }

[Package chron version 2.3-53 Index]