Import 1D NMR data

read1d() read1d_proc()

Import 1D NMR spectra

read1d_raw()

Read-in 1D NMR FIDs and process to spectra

Visualising spectra

matspec()

Plot overlayed NMR spectra

spec()

Plot single NMR spectrum

specOverlay()

Higher level plotting function to overlay NMR spectra (ggplot2 based)

Pre-processing and quality control

alignSegment()

Align an NMR spectra to a reference spectrum (cross-correlation)

binning()

Spectral data binning

bline() bcor()

Baseline correction for 1D NMR spectra

calibrate()

Chemical shift calibration

excise1d()

Excise standard chemical shift regions

get.idx() get_idx()

Select indices of the chemical shift array taht corresponding to a chemical shift region

lw()

Full width at half-maximum (fwhm)

noise.est()

Estimation of noise level of 1D spectrum

normErectic()

Normalise by the ERETIC signal

pqn()

Probabilistic quotient normalisation

Scalings, effect size

es_cdelta()

Cliff's delta (effect size)

minmax()

Min-max scaling

scRange()

Range scaling

PCA and O-PLS modelling and model interpretation

cvanova()

Cross-validated ANOVA for O-PLS models

dmodx()

Calculating distance to the model in X space

eruption()

Eruption plot for OPLS-DA model visualisation

opls()

Orthogonal-Partial Least Squares (O-PLS)

opls_perm()

OPLS model Y-permutations

pca()

Principal Component Analysis

ppick()

Find local extrema in NMR spectra (peak picking)

plotload()

Visualising PCA or OPLS loadings for NMR data

plotload_cat()

Plot PCA or O-PLS loadings

plotscores()

Plotting PCA or OPLS model scores

predict_opls()

OPLS model predictions

specload()

Overlay PCA or OPLS loadings with spectra

Metabolite ID-ing

stocsy()

Statistical Total Correlation Spectroscopy (STOCSY)

storm()

Subset Optimisation by Reference Matching (STORM)

plotStocsy()

Plot Statistical Total Correlation Spectroscopy (STOCSY)

Class definitions

OPLS_metabom8-class

An S4 class to represent an OPLS model constructed with metabom8

PCA_metabom8-class

An S4 class to represent an PCA model constructed with metabom8

stocsy1d_metabom8-class

An S4 class to represent STOCSY model constructed with metabom8