icosa

Conversion of 3d Cartesian coordinates to polar coordinates

Conversion of polar coordinates to 3d Cartesian coordinates

Create a SpatialLines class object from an icosahedral grid

Spatial polygons from an icosahedral grid

Calculation of distances along arcs

Calculation of distance matrices along arcs

Calculation of point coordinates along an arc

Locate grid faces based on their positions on a map

The face centers of an icosahedral grid object

Spherical convex hull.

Lengths of grid edges

The edges of a 3d object

Extraction from a gridlayer using indices

A facelayer linked to a trigrid or hexagrid object

The faces of a 3d object

Methods of 3D face plotting.

Create or instantiate an graph class graph from the faces of an icosahedral grid

Labels of grid vertices, faces and edges.

Display the names of the grid elements in 3d plots.

Guides for 3d spherical plotting.

Legend for a heatmap with predefined colors.

Construct a penta-hexagonal icosahedral grid

Global Triangular and Hexa-Pentagonal Grids Based on Tessellated Icosahedra

The number of faces in a trigrid or hexagrid class object.

Lines method for the trigrid and hexagrid classes

Methods of 3d line plotting

Basic lookup function of coordinates on an icosahedral grid

The face names in a facelayer class object

Add an igraph object to a predefined slot in an icosahedral grid

Add a SpatialPolygons object to a predefined slot in a trigrid or hexagrid object

Faces occupied by the specified object

Extracting and setting the grid orientation

Plot method for the trigrid, hexagrid or facelayer classes

3d plotting of an icosahedral grid, its subset or a data layer

Position of face centers and vertices on a grid

Resampling of data involving a trigrid or a hexagrid object.

Rotation of trigrid and hexagrid objects

Random point generation on the surface of a sphere

Subsetting an icosahedral grid or data layers organized with them

Areas of grid cell surfaces

Surface centroid point of a spherical point cloud

Tessellation guide to hexagrid objects

Translating an icosahedral grid object in 3d Cartesian space

A triangular icosahedral grid

Shape distortions of the triangular faces and subfaces

Extract and replace values from a gridlayer-derived object (e.g. link{facelayer}).

The vertices of an icosahedral grid object

The neighbouring faces of faces in an icosahedral grid