cps_plot {ggspectra}R Documentation

Plot an instrument counts spectrum.

Description

This function returns a ggplot object with an annotated plot of a cps_spct object.

Usage

cps_plot(spct, w.band, range, pc.out, label.qty, span, annotations, norm,
  text.size, na.rm, ...)

Arguments

spct

a cps_spct object

w.band

list of waveband objects

range

an R object on which range() returns a vector of length 2, with min annd max wavelengths (nm)

pc.out

logical, if TRUE use percents instead of fraction of one

label.qty

character string giving the type of summary quantity to use for labels, one of "mean", "total", "contribution", and "relative".

span

a peak is defined as an element in a sequence which is greater than all other elements within a window of width span centered at that element.

annotations

a character vector

norm

numeric normalization wavelength (nm) or character string "max" for normalization at the wavelength of highest peak.

text.size

numeric size of text in the plot decorations.

na.rm

logical.

...

other arguments

Value

a ggplot object.

Note

Note that scales are expanded so as to make space for the annotations. The object returned is a ggplot object, and can be further manipulated. When spct has more than one column with spectral data, each of these columns is normalized individually.


[Package ggspectra version 0.2.3 Index]