LofL

Numeric. A vector of the desired levels.

lvls

Integer. The number of spectra to be plotted, which is also the number of times to replicate the levels.

When overlaying multiple 2D NMR spectra, one needs to supply a vector of contour levels for each spectrum, as a list.
This is a convenience function which takes a set of levels and copies it into a list, ready for
use with <code><a rd-options="" href="/link/plotSpectra2D?package=ChemoSpec2D&version=0.5.0" data-mini-rdoc="ChemoSpec2D::plotSpectra2D">plotSpectra2D</a></code>.

A collection of functions for exploratory chemometrics of 2D spectroscopic data sets such as COSY (correlated spectroscopy) and HSQC (heteronuclear single quantum coherence) 2D NMR (nuclear magnetic resonance) spectra. 'ChemoSpec2D' deploys methods aimed primarily at classification of samples and the identification of spectral features which are important in distinguishing samples from each other. Each 2D spectrum (a matrix) is treated as the unit of observation, and thus the physical sample in the spectrometer corresponds to the  sample from a statistical perspective.  In addition to chemometric tools, a few tools are provided for plotting 2D spectra, but these are not intended to replace the functionality typically available on the spectrometer. 'ChemoSpec2D' takes many of its cues from 'ChemoSpec' and tries to create consistent graphical output and to be very user friendly.

Bryan Hanson

ChemoSpec2D

Exploratory Chemometrics for 2D Spectroscopy

Bryan A. Hanson

LofL function

When overlaying multiple 2D NMR spectra, one needs to supply a vector of contour levels for each spectrum, as a list.
This is a convenience function which takes a set of levels and copies it into a list, ready for
use with <code><a rd-options='' href='plotSpectra2D'>plotSpectra2D</a></code>.

LofL: Create a List of Contour Levels

Description

Usage

Arguments

Value

See Also