scale_x_frequency_continuous {ggspectra} | R Documentation |
Frequency x-scale
Description
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),
breaks = scales::pretty_breaks(n = 7),
labels = SI_pl_format(exponent = unit.exponent),
label.text = axis_labels()[["freq"]],
...
)
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. |
... |
other named arguments passed to |
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)