R: Wavelength x-scale

scale_x_wl_continuous {ggspectra} | R Documentation

## Wavelength x-scale

### Description

Scale x continuous with defaults suitable for wavelengths in nanometres.

### Usage

    scale_x_wl_continuous(unit.exponent = -9,
      name = w_length_label(unit.exponent = unit.exponent),
      breaks = scales::pretty_breaks(n = 7), labels = SI_pl_format(exponent =
      unit.exponent + 9), ...)

### Arguments

`unit.exponent` | integer
`name` | The name of the scale, used for the axis-label.
`breaks` | The positions of ticks or a function to generate them.
`labels` | The tick labels or a function to generate them from the tick positions.
`...` | other named arguments passed to `scale_y_continuous`

### Note

This function only alters two default arguments, please, see documentation for `scale_continuous`

### Examples

    library(ggplot2)
    library(photobiology)

    ggplot(sun.spct) +
      geom_line() +
      scale_x_wl_continuous()

    ggplot(sun.spct) +
      geom_line() +
      scale_x_wl_continuous(-6)

    ggplot(sun.spct) +
      geom_line() +
      scale_x_wl_continuous(sec.axis = sec_axis_w_number())

    ggplot(sun.spct) +
      geom_line() +
      scale_x_wl_continuous(unit.exponent = -6,
                            sec.axis = sec_axis_w_number())

[Package ggspectra version 0.2.3 Index]