Read a subset of columns from the data matrix

Read a subset of columns from the data matrix

rcpp_mmutil_read_columns_sparse(
  mtx_file,
  memory_location,
  r_column_index,
  verbose = FALSE,
  NUM_THREADS = 1L,
  MIN_SIZE = 10L
)

Arguments

mtx_file

data file

memory_location

column -> memory location

r_column_index

column indexes to retrieve (1-based)

Value

lists of rows, columns, values