segment.windows: Displays how spectra are divided in windows

In windows.pls: Segmentation Approaches in Chemometrics

Displays how spectra are divided in windows

Description

Displays how spectra are divided in windows

Usage

segment.windows(
  xblock = NULL,
  yblock = NULL,
  windows = 3,
  fade = 0.3,
  xlab = "Wavelength",
  ylab = "Absorbance",
  title = paste("Spectra divided in", windows, "segments", sep = " "),
  legend = NULL,
  grad = 10
)

Arguments

xblock	A matrix containing one spectra for each observation.
yblock	A vector containing the concentration associated to each spectra in the xblock matrix.
windows	Number of windows the spectra has to be divided in.
fade	Opacity of the window.
xlab	Title of the x axis.
ylab	Title of the y axis.
title	Title of the plot.
legend	Name of the substance which drives the gradient of spectra’s mapping.
grad	Number of colors that are used to build the gradient.

Value

Plot of spectra in which segments have a different background color.

Examples

data(beer)
conc=unlist(beer[,1])
sp=beer[,2:ncol(beer)]
names(sp)=convert.names.wl(1100,2250,2)
segment.windows(sp,conc,windows=7,fade=0.25)

windows.pls documentation built on Aug. 10, 2023, 1:07 a.m.