map.spectra.gradient: Colors and plots each spectra based on the associated...

In windows.pls: Segmentation Approaches in Chemometrics

Colors and plots each spectra based on the associated concentration of the outcome variable

Description

Colors and plots each spectra based on the associated concentration of the outcome variable

Usage

map.spectra.gradient(
  xblock = NULL,
  yblock = NULL,
  legend.title = "Gradient",
  plot.title = "Spectra with gradient based on Y variable",
  xlab = "Wavelength",
  ylab = "Absorbance",
  grad = 10,
  l.width = 0.75,
  col.legend = NULL
)

Arguments

xblock	A matrix containing one spectra for each observation.
yblock	A vector containing the concentration associated to each spectra in the xblock matrix.
legend.title	Title of the legend which displays the gradient.
plot.title	Title of the plot.
xlab	Title of the x axis.
ylab	Title of the y axis.
grad	Number of colors for the gradient's palette.
l.width	Width of each spectra.
col.legend	Deletes presence of the legend.

Value

Plot with spectra of all observations, mapped with the intensity of the associated concentration.

Examples

data(beer)
X=beer[,2:ncol(beer)]
names(X)=convert.names.wl(1100,2250,2)
Y=unlist(beer[,1])
map.spectra.gradient(X,Y)

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