Plot one or more spectra from a data frame

Usage

plotspectra(
  df,
  x = 1,
  y = 2,
  cols = y,
  xlim = range(df[, x], na.rm = T),
  ylim = range(df[, y], na.rm = T),
  main = "",
  xlab = "",
  ylab = "",
  ...
)

Arguments

df: data.frame. Table containing the spectra to plot, with wavelengths in one column and reflectance/radiance values in one or more other columns.
x: integer or character. Column index or name in df to use as the x-axis (typically wavelength). Default 1.
y: integer or character vector. Column index(es) or name(s) in df to plot as spectra on the y-axis. Default 2.
cols: vector. Line colors, one per element of y. Defaults to y itself.
xlim: numeric vector of length 2. X-axis plot limits. Defaults to the data range of column x.
ylim: numeric vector of length 2. Y-axis plot limits. Defaults to the data range of columns y.
main: character. Plot title.
xlab: character. X-axis label.
ylab: character. Y-axis label.
...: additional graphical parameters passed to the underlying plot() call.

Value

plot