Create an implicit (regular-grid) coordinate

Usage

ImplicitCoord(
  dimension = character(0),
  n = integer(0),
  offset = numeric(0),
  step = numeric(0)
)

Arguments

dimension: Dimension name (character, length 1)
n: Number of elements (integer, length 1)
offset: Start value (numeric, length 1)
step: Step size (numeric, length 1)

Examples

lat <- ImplicitCoord(dimension = "lat", n = 180L, offset = -89.5, step = 1.0)
coord_values(lat)  # -89.5, -88.5, ..., 89.5
#>   [1] -89.5 -88.5 -87.5 -86.5 -85.5 -84.5 -83.5 -82.5 -81.5 -80.5 -79.5 -78.5
#>  [13] -77.5 -76.5 -75.5 -74.5 -73.5 -72.5 -71.5 -70.5 -69.5 -68.5 -67.5 -66.5
#>  [25] -65.5 -64.5 -63.5 -62.5 -61.5 -60.5 -59.5 -58.5 -57.5 -56.5 -55.5 -54.5
#>  [37] -53.5 -52.5 -51.5 -50.5 -49.5 -48.5 -47.5 -46.5 -45.5 -44.5 -43.5 -42.5
#>  [49] -41.5 -40.5 -39.5 -38.5 -37.5 -36.5 -35.5 -34.5 -33.5 -32.5 -31.5 -30.5
#>  [61] -29.5 -28.5 -27.5 -26.5 -25.5 -24.5 -23.5 -22.5 -21.5 -20.5 -19.5 -18.5
#>  [73] -17.5 -16.5 -15.5 -14.5 -13.5 -12.5 -11.5 -10.5  -9.5  -8.5  -7.5  -6.5
#>  [85]  -5.5  -4.5  -3.5  -2.5  -1.5  -0.5   0.5   1.5   2.5   3.5   4.5   5.5
#>  [97]   6.5   7.5   8.5   9.5  10.5  11.5  12.5  13.5  14.5  15.5  16.5  17.5
#> [109]  18.5  19.5  20.5  21.5  22.5  23.5  24.5  25.5  26.5  27.5  28.5  29.5
#> [121]  30.5  31.5  32.5  33.5  34.5  35.5  36.5  37.5  38.5  39.5  40.5  41.5
#> [133]  42.5  43.5  44.5  45.5  46.5  47.5  48.5  49.5  50.5  51.5  52.5  53.5
#> [145]  54.5  55.5  56.5  57.5  58.5  59.5  60.5  61.5  62.5  63.5  64.5  65.5
#> [157]  66.5  67.5  68.5  69.5  70.5  71.5  72.5  73.5  74.5  75.5  76.5  77.5
#> [169]  78.5  79.5  80.5  81.5  82.5  83.5  84.5  85.5  86.5  87.5  88.5  89.5
coord_lookup(lat, 0)  # integer index of latitude 0
#> [1] 91