dat2ddc {svs}

Transform a Data Frame into a Double-Coded Matrix

Description

A helper function for transforming all columns of a data frame into a double-coded matrix.

Usage

dat2ddc(dat, limits = NULL)

dat2dc(dat, limits = NULL)

Arguments

dat

A data frame containing only numeric vectors or ordered factors as columns.

limits

A vector, matrix or list specifying the lower and upper limits for the columns in dat. A single vector of length two applies the same limits to all columns. The matrix or list must either have the same number of columns/components as the number of the number of columns in dat or they must have names. The names can be a subset of the column names of dat. In any case, the limits for each column must be a vector of length two, i.e. the matrix must have two rows or each list component should be a vector of length two. If left unspecified (the default), then the minimum and maximum of each column in dat will be taken as (separate) limits.

Value

A matrix with doubly-coded columns.

See Also

vec2ddc.