R: Plot aovPCAscores Loadings of a Spectra Object

aovPCAloadings {ChemoSpec} | R Documentation

## Plot aovPCAscores Loadings of a Spectra Object

### Description

Uses the results from `aovPCAscores` to plot the corresponding loadings.

### Usage

    aovPCAloadings(spectra, LM, pca, plot = 1, loads = 1, ref = 1, ...)

### Arguments

`spectra` | An object of S3 class `Spectra`.
`LM` | List of matrices created by `aovPCAscores`.
`pca` | PCA output from `aovPCAscores`.
`plot` | An integer specifying the desired plot. `names(LM)` will show which matrix has which data in it.
`loads` | An integer vector giving the loadings to plot. More than 3 loadings creates a useless plot using the default graphics window.
`ref` | An integer specifying the reference spectrum to plot, which appears at the bottom of the plot.
`...` | Additional parameters to be passed to plotting functions.

### Value

None. Side effect is a plot.

### Author(s)

Matthew J. Keinsley and Bryan A. Hanson, DePauw University.

### References

Pinto, Bosc, Nocairi, Barros, and Rutledge. "Using ANOVA-PCA for Discriminant Analysis: ..." Analytica Chimica Acta 629.1-2 (2008): 47-55.

Harrington, Vieira, Espinoza, Nien, Romero, and Yergey. "Analysis of Variance–Principal Component Analysis: ..." Analytica Chimica Acta 544.1-2 (2005): 118-27.

https://github.com/bryanhanson/ChemoSpec

### See Also

An example using this function can be seen in `aov_pcaSpectra`. See also `plotLoadings`.

[Package ChemoSpec version 4.4.97 Index]