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Set the default icosahedron orientation

Source: R/hexify_projection.R
hexify_build_icosa.Rd

Sets the orientation read by the functions that take no grid: the projection functions in this family and the low-level conversions that take a resolution and an aperture. The standard ISEA orientation (vertex 0 at 11.25E, 58.28N, azimuth 0) is the default until this is called. A grid carries its own orientation (see the orientation argument of hex_grid), which this does not change.

Usage

hexify_build_icosa(
  vert0_lon = ISEA_VERT0_LON_DEG,
  vert0_lat = ISEA_VERT0_LAT_DEG,
  azimuth = ISEA_AZIMUTH_DEG
)

Arguments

vert0_lon

Vertex 0 longitude in degrees (default ISEA_VERT0_LON_DEG)

vert0_lat

Vertex 0 latitude in degrees (default ISEA_VERT0_LAT_DEG)

azimuth

Azimuth rotation in degrees (default ISEA_AZIMUTH_DEG)

Value

Invisible NULL. Called for side effect.

See also

Other projection: hexify_face_centers(), hexify_forward(), hexify_forward_to_face(), hexify_inverse(), hexify_which_face()

Examples

# Use standard ISEA3H orientation
hexify_build_icosa()

# Custom orientation
hexify_build_icosa(vert0_lon = 0, vert0_lat = 90, azimuth = 0)