ordr (version 0.1.1)

methods-correspondence: Functionality for correspondence analysis ('correspondence') objects

Description

These methods extract data from, and attribute new data to, objects of class "correspondence" from the MASS package.

Usage

# S3 method for correspondence
as_tbl_ord(x)
# S3 method for correspondence
recover_rows(x)
# S3 method for correspondence
recover_cols(x)
# S3 method for correspondence
recover_inertia(x)
# S3 method for correspondence
recover_conference(x)
# S3 method for correspondence
recover_coord(x)
# S3 method for correspondence
recover_aug_rows(x)
# S3 method for correspondence
recover_aug_cols(x)
# S3 method for correspondence
recover_aug_coord(x)

Value

The recovery generics recover_*() return core model components, distribution of inertia, supplementary elements, and intrinsic metadata; but they require methods for each model class to tell them what these components are.

The generic as_tbl_ord() returns its input wrapped in the 'tbl_ord' class. Its methods determine what model classes it is allowed to wrap. It then provides 'tbl_ord' methods with access to the recoverers and hence to the model components.

Arguments

x

An ordination object.

See Also

Other methods for singular value decomposition-based techniques: methods-cancor, methods-lda, methods-lra, methods-mca, methods-prcomp, methods-princomp, methods-svd

Other models from the MASS package: methods-lda, methods-mca

Examples

# table of hair and eye color data collapsed by sex
data(quine, package = "MASS")
class(quine)
head(quine)

# use correspondence analysis to construct row and column profiles
(quine_ca <- MASS::corresp(~ Age + Eth, data = quine))
(quine_ca <- as_tbl_ord(quine_ca))

# recover row and column profiles
get_rows(quine_ca)
get_cols(quine_ca)

# augment profiles with names, masses, distances, and inertias
(quine_ca <- augment_ord(quine_ca))