Extract a manifold definition string, or a logical for matching
manifold type
Usage
fm_manifold(x, type = NULL)
fm_manifold_get(x)
# S3 method for default
fm_manifold_get(x)
# S3 method for character
fm_manifold_get(x)
# S3 method for fm_lattice_2d
fm_manifold_get(x)
# S3 method for fm_lattice_Nd
fm_manifold_get(x)
fm_manifold_type(x)
fm_manifold_dim(x)
Value
fm_manifold(): Either logical (matching manifold type yes/no),
or character (the stored manifold, when is.null(type) is TRUE)
fm_manifold_get(): character or NULL
fm_manifold_type(): character or NULL; "M" (curved manifold),
"R" (flat space), "S" (generalised spherical space), "T"
(general tensor product space), or "G" (metric graph)
fm_manifold_dim(): integer or NULL
Arguments
x
An object with manifold information, or a character string
type
character; if NULL (the default), returns the manifold
definition string by calling fm_manifold_get(x).
If character, returns TRUE if the manifold type of x matches at least
one of the character vector elements.
Functions
fm_manifold_get(): Method for obtaining a text representation of the
manifold characteristics, e.g. "R1", "R2", "M2", or "T3". The default
method assumes that the manifold is stored as a character string in a
"manifold" element of the object, so it can be extracted with
x[["manifold"]].
Object classes that do not store the information in this way need to
implement their own method.