Internal function that is short for which(is.na(x), arr.ind = TRUE). Creates array index locations of missing values in a dataframe.

where_na(x)

Arguments

x

a dataframe

Value

a matrix with columns "row" and "col", which refer to the row and column that identify the position of a missing value in a dataframe

See also

Examples

where_na(airquality)
#> row col #> [1,] 5 1 #> [2,] 10 1 #> [3,] 25 1 #> [4,] 26 1 #> [5,] 27 1 #> [6,] 32 1 #> [7,] 33 1 #> [8,] 34 1 #> [9,] 35 1 #> [10,] 36 1 #> [11,] 37 1 #> [12,] 39 1 #> [13,] 42 1 #> [14,] 43 1 #> [15,] 45 1 #> [16,] 46 1 #> [17,] 52 1 #> [18,] 53 1 #> [19,] 54 1 #> [20,] 55 1 #> [21,] 56 1 #> [22,] 57 1 #> [23,] 58 1 #> [24,] 59 1 #> [25,] 60 1 #> [26,] 61 1 #> [27,] 65 1 #> [28,] 72 1 #> [29,] 75 1 #> [30,] 83 1 #> [31,] 84 1 #> [32,] 102 1 #> [33,] 103 1 #> [34,] 107 1 #> [35,] 115 1 #> [36,] 119 1 #> [37,] 150 1 #> [38,] 5 2 #> [39,] 6 2 #> [40,] 11 2 #> [41,] 27 2 #> [42,] 96 2 #> [43,] 97 2 #> [44,] 98 2
where_na(oceanbuoys$sea_temp_c)
#> [1] 463 481 637