Frequency x-scale — scale_x_frequency

Scale x continuous with defaults suitable for wavelengths expressed as frequencies [Hz].

Usage

scale_x_frequency_continuous(
  unit.exponent = 12,
  name = w_frequency_label(unit.exponent = unit.exponent, label.text = label.text,
    axis.symbols = axis.symbols),
  breaks = scales::pretty_breaks(n = 7),
  labels = SI_pl_format(exponent = unit.exponent),
  label.text = axis_labels()[["freq"]],
  axis.symbols = getOption("ggspectra.axis.symbols", default = TRUE),
  ...
)

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.
label.text: character Textual portion of the labels.
axis.symbols: logical If TRUE symbols of the quantities are added to the name. Supported only by format = "R.expression".
...: other named arguments passed to scale_y_continuous

Details

This scale automates the generation of axis labels when the variable mapped to the x aesthetic contains numeric values for wavelengths expressed as frequency. This is not how spectral data are stored in the packages of the R for Photobiology suite and can be only used in plots built with ggplot2() with explicit mapping using a conversion function. If desired, a secondary axis can be added manually as described in sec_axis.

Note

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

Examples


ggplot(sun.spct, aes(x = wl2frequency(w.length), y = s.e.irrad)) +
  geom_line() +
  scale_x_frequency_continuous()


ggplot(sun.spct, aes(x = wl2frequency(w.length), y = s.e.irrad)) +
  geom_line() +
  scale_x_frequency_continuous(14)