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mixOmics (version 4.1-4)

Omics Data Integration Project

Description

The package provide statistical integrative techniques and variants to analyse highly dimensional data sets: regularized CCA and sparse PLS to unravel relationships between two heterogeneous data sets of size (nxp) and (nxq) where the p and q variables are measured on the same samples or individuals n. These data may come from high throughput technologies, such as omics data (e.g. transcriptomics, metabolomics or proteomics data) that require an integrative or joint analysis. However, mixOmics can also be applied to any other large data sets where p + q >> n. rCCA is a regularized version of CCA to deal with the large number of variables. sPLS allows variable selection in a one step procedure and two frameworks are proposed: regression and canonical analysis. Numerous graphical outputs are provided to help interpreting the results. Recent methodological developments include: sparse PLS-Discriminant Analysis, Independent Principal Component Analysis and multilevel analysis using variance decomposition of the data.

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Version

Install

install.packages('mixOmics')

Monthly Downloads

290

Version

4.1-4

License

GPL (>= 2)

Maintainer

Last Published

March 6th, 2013

Functions in mixOmics (4.1-4)

ipca

Independent Principal Component Analysis
imgCor

Image Maps of Correlation Matrices between two Data Sets
s.match

Plot of Paired Coordinates
cim

Clustered Image Maps (CIMs) ("heat maps")
spls

Sparse Partial Least Squares (sPLS)
jet.colors

Jet Colors Palette
estim.regul

Estimate the parameters of regularization for Regularized CCA
liver.toxicity

Liver Toxicity Data
spca

Sparse Principal Components Analysis
predict

Predict Method for PLS, sPLS, PLS-DA or sPLS-DA
data.simu

Simulation study for multilevel analysis
breast.tumors

Human Breast Tumors Data
nearZeroVar

Identification of zero- or near-zero variance predictors
print

Print Methods for CCA, (s)PLS and Summary objects
summary

Summary Methods for CCA and PLS objects
plot.rcc

Canonical Correlations Plot
plot3dIndiv

Plot of Individuals (Experimental Units) in three dimensions
image

Plot the cross-validation score.
vip

Variable Importance in the Projection (VIP)
pls

Partial Least Squares (PLS) Regression
plot.valid

Validation Plot
internal-functions

Internal Functions
yeast

Yeast metabolomic study
pheatmap.multilevel

Clustered heatmap
linnerud

Linnerud Dataset
plsda

Partial Least Squares Discriminate Analysis (PLS-DA).
nipals

Non-linear Iterative Partial Least Squares (NIPALS) algorithm
rcc

Regularized Canonical Correlation Analysis
pcatune

Tune the number of principal components in PCA
multidrug

Multidrug Resistence Data
splsda

Sparse Partial Least Squares Discriminate Analysis (sPLS-DA)
multilevel

Multilevel analysis for repeated measurements (cross-over design)
srbct

Small version of the small round blue cell tumors of childhood data
plot3dVar

Plot of Variables in three dimensions
valid

Compute validation criterion for PLS, sPLS, PLS-DA and sPLS-DA
scatterutil

Graphical utility functions from ade4
mat.rank

Matrix Rank
select.var

Output of selected variables
plotIndiv

Plot of Individuals (Experimental Units)
nutrimouse

Nutrimouse Dataset
prostate

Human Prostate Tumors Data
network

Relevance Network for (r)CCA and (s)PLS regression
plotVar

Plot of Variables
pca

Principal Components Analysis
sipca

Independent Principal Component Analysis
vac18

Vaccine study Data
tune.multilevel

Tuning functions for multilevel analyses