Create and export headings

hdg_norm(hdg)

uv(u, v)

uv_norm(uv)

uv_from_hdg(hdg)

hdg_from_uv(uv)

rad_from_hdg(hdg)

hdg_from_rad(rad)

Arguments

hdg	A heading in degrees, where 0 is north, 90 is east, 180 is south, and 270 is west. Values outside the range [0-360) are coerced to this range using `hdg_norm()`.
uv, u, v	A data.frame with columns `u` (magnitude east) and `v` (magnitude north).
rad	An angle in radians such that a `hdg` of 90 is zero radians and a `hdg` of 0 is `pi / 2` radians.

Examples

hdg_norm(-10:10)
#>  [1] 350 351 352 353 354 355 356 357 358 359   0   1   2   3   4   5   6   7   8
#> [20]   9  10
hdg_from_uv(uv(1, 0))
#> [1] 90
uv_from_hdg(5:10)
#>            u         v
#> 1 0.08715574 0.9961947
#> 2 0.10452846 0.9945219
#> 3 0.12186934 0.9925462
#> 4 0.13917310 0.9902681
#> 5 0.15643447 0.9876883
#> 6 0.17364818 0.9848078
uv_norm(uv(2, 0))
#>   u v
#> 1 1 0