Read a named sparse matrix in MatrixMarket text format

Usage

read_named_MM(
  file,
  skip = 0,
  n_max = Inf,
  class = c("dgCMatrix", "tibble"),
  guess_max = 20
)

Arguments

file: the file to read
skip: the number of records to skip (default: 0)
n_max: the maximum number of records to read (default: Inf)
class: the class of object to return. By default a "dgCMatrix". If "tibble" is chosen, the sparse matrix is returned as a tibble with 3 columns: i (row index), j (column index) and x (values) and an "header" attribute containing the matrix rownames and colnames.
guess_max: the number of lines to read to find the header. (see read_named_MM_header())

Value

By default a dgCMatrix. If the "tibble" class is chosen, the sparse matrix is returned as a tibble with 3 columns: i (row index), j (column index) and x (values) and an "header" attribute containing the matrix rownames and colnames.