statis: STATIS, dual STATIS and SIR-STATIS for cubic data.

In tuxette/SirStatis: STATIS, dual STATIS and SIR-STATIS for cubic data

Description

statis performs the STATIS-like analyses of cubic data with the two standard steps: inter-structure analysis (with the function interStructure) and intra-structure analysis.

Usage

statis(data, method = c("sir", "classic", "dual"), y = NULL, H = NULL,
  scale = TRUE)

Arguments

data	List; The list of tables to study.
method	The method to apply ("sir", "classic" or "dual"). Default is "sir".
y	A numerical variable of interest (mandatory for "sir").
H	Integer; The number of slices to cut y (mandatory for "sir").
scale	Logical; Should the interstructure be computed with the cosine (TRUE) or with the dot product (FALSE). Default is TRUE.

Details

STATIS, dual STATIS and SIR-STATIS for cubic data

perform STATIS-like analyses of cubic data

The package is well suited to explore time-course datasets, eventually in relation with a target numeric variable (SIR approach).

Value

S3 object of class statisRes: a list consisting of

• parameters

  • method method used ("sir", "classic" or "dual")

  • H number of slices

  • scale logical indicating if the interstructure is analyzed with the cosine (TRUE) or the dot product (FALSE)

• svd

  • values eigenvalues of the generalized svd (square of singular values)

  • P left-singular vectors of the generalized svd

  • Q right-singular vectors of the generalized svd

• observations

  • coord if method is "sir" or "dual", matrix with the compromise coordinates of slices ("sir") or of observations (center of gravity of the table-specific coordinates). If method is "classic", matrix with the coordinates of the observations (factors).

  • tcoord if method is "sir" or "dual", list of matrices with the table-specific coordinates of slices ("sir") or of observations. If method is "classic", list of the coordinates of the partial (table-specific) factors

• variables

  • cos2 if method is "sir" or "dual", matrix with the coordinates of the variables on the circle of correlation (also called squared cosinus). If method is "classic", matrix with the compromise coordinates of the variables on the circle of correlation (center of gravity of the table-specific coordinates)

  • tcos2 if method is "sir" or "dual", list of matrices with the coordinates of the partial (table-specific) squared-cosinus. If method is "classic", list of the table-specific coordinates

@export

tuxette/SirStatis documentation built on May 14, 2019, 8:03 a.m.