# Least Squares Sparse Principal Components Analysis

## Documentation for package ‘spca’ version 1.1.1

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Package NEWS.

## Help Pages

spca-package | Least Squares Sparse Principal Components Analysis
aggregate_by_group | Aggregate loadings or contributions by group
change_loadings_sign_spca | Change the sign of selected loadings in an spca object
compare_spca | Compare two or more spca solutions
holzinger | Holzinger-Swineford Student Ability data
holzinger_scales | Holzinger-Swineford Student Ability scales
is.spca | Test for spca objects
new_spca | Construct an spca object from a set of loadings
pca | Compute principal components
plot.spca | Plot an spca object
print.spca | Print an spca object
show_contributions_spca | Show nonzero contributions by component
spca | Compute LS-SPCA components
spca_object | Sparse principal component analysis object
spca_screeplot | Plot eigenvalues in a scree plot
summary.spca | Summarize an spca object
wachter_qqplot | Wachter QQ plot for eigenvalues