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

Usage

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