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Spherical coordinate conversion

Source: R/coordinates.R
ramsay_coords.Rd

Spherical coordinate conversion

Usage

cartesian_to_acosvec(x)

acoscartesian_to_cartesian(x)

Source

Ramsay, 1967, p. 15-16

Arguments

x

matrix. Cartesian coordinates of points

Details

acoscartesian coordinates are given as

a

deviation from x-axis E-W horizontal (angle in degrees)

b

deviation from y-axis N-S horizontal (angle in degrees)

c

deviation from z-axis vertical (angle in degrees)

Examples

if (FALSE) { # \dontrun{
# Stereographic coordinates (angle notation):
x <- rbind(
  c(58, 78, 35),
  c(47, 72, 47),
  c(57, 68, 41),
  c(56, 64, 45),
  c(52, 65, 47),
  c(61, 62, 51),
  c(55, 60, 49),
  c(61, 62, 42),
  c(68, 52, 46),
  c(42, 58, 65)
)
acoscartesian_to_cartesian(x)
acoscartesian_to_cartesian(x) |> to_spherical()
acoscartesian_to_cartesian(x) |> cartesian_to_acoscartesian()
} # }