thisutils (version 0.3.1)

matrix_to_table: Switch matrix to table

Description

Switch matrix to table

Usage

matrix_to_table(
  matrix,
  row_names = NULL,
  col_names = NULL,
  threshold = 0,
  keep_zero = FALSE
)

Value

A table with three columns: row, col, and value.

Arguments

matrix

A matrix.

row_names

Character vector of row names to filter by.

col_names

Character vector of column names to filter by.

threshold

The threshold for filtering values based on absolute values. Defaults to 0.

keep_zero

Whether to keep zero values in the table. Defaults to false.

Examples

test_matrix <- simulate_sparse_matrix(10, 10)
colnames(test_matrix) <- paste0("c", 1:10)
rownames(test_matrix) <- paste0("r", 1:10)
table <- matrix_to_table(test_matrix)
matrix_new <- table_to_matrix(table)
test_matrix <- test_matrix[rownames(matrix_new), colnames(matrix_new)] |>
  as_matrix()
identical(test_matrix, matrix_new)

matrix_to_table(
  test_matrix,
  threshold = 2
)

matrix_to_table(
  test_matrix,
  row_names = c("r1", "r2"),
  col_names = c("c1", "c2")
)