Convert array index into xy location in matrix. Helper function for locate_ndl_in_hay().

Convert array index into xy location in matrix. Helper function for locate_ndl_in_hay().

Usage

index2xy(index, nrow)

Arguments

index, nrow

A numeric.

Value

       A numeric pair of xy location.

Examples

nrow <- 4
matrix(1:12, nrow = nrow)
#>      [,1] [,2] [,3]
#> [1,]    1    5    9
#> [2,]    2    6   10
#> [3,]    3    7   11
#> [4,]    4    8   12
purrr::map(1:12, index2xy, nrow = nrow)
#> [[1]]
#> [1] 1 1
#> 
#> [[2]]
#> [1] 2 1
#> 
#> [[3]]
#> [1] 3 1
#> 
#> [[4]]
#> [1] 4 2
#> 
#> [[5]]
#> [1] 1 2
#> 
#> [[6]]
#> [1] 2 2
#> 
#> [[7]]
#> [1] 3 2
#> 
#> [[8]]
#> [1] 4 3
#> 
#> [[9]]
#> [1] 1 3
#> 
#> [[10]]
#> [1] 2 3
#> 
#> [[11]]
#> [1] 3 3
#> 
#> [[12]]
#> [1] 4 4
#>