matsbyname (version 0.6.11)

create_matrix_byname: Create a "byname" matrix from a vector

Description

This function creates a "byname" matrix, or list of matrices, from .dat, depending on the input arguments. This function is similar to matrix(), but with "byname" characteristics.

Usage

create_matrix_byname(
  .dat,
  nrow,
  ncol,
  byrow = FALSE,
  dimnames,
  matrix_class = c("matrix", "Matrix")
)

Value

A matrix, list of matrices, or column in a data frame, depending on the input arguments.

Arguments

.dat

The data to be used to create the matrix, in a list format, or as a data frame column containing a list of the data to be used for each observation.

nrow

The number of rows to be used to create the matrix, in a list format, or as a data frame column containing a list of the number of rows to be used for each observation.

ncol

The number of columns to be used to create the matrix, in a list format, or as a data frame column containing a list of the number of columns to be used for each observation.

byrow

The argument stating whether the matrix should be filled by rows or by columns (FALSE by column, TRUE by row), in a list format, or as a data frame column containing a list of the byrow argument for each observation. Default is FALSE.

dimnames

The dimension names to be used for creating the matrices, in a list format, or as a data frame column containing a list of the dimension names to be used for each observation.

matrix_class

One of "matrix" or "Matrix". "matrix" creates a base::matrix object with the matrix() function. "Matrix" creates a Matrix::Matrix object using the matsbyname::Matrix() function. This could be a sparse matrix. Default is "matrix".

Details

Row and column names are taken from the dimnames argument.

Any row or column type information on .dat is preserved on output.

The created object(s) can be of type base::matrix or Matrix::Matrix, the latter enables sparse objects to save both memory and disk.

Examples

create_matrix_byname(c(1, 2), nrow = 2, ncol = 1,
                     dimnames = list(c("r1", "r2"), "c1"))
create_matrix_byname(list(1, 2), nrow = list(1, 1), ncol = list(1,1), 
                     dimnames = list(list("r1", "c1"), list("R1", "C1")))