CarToPol                Conversion of 3d Cartesian coordinates to polar
                        coordinates
PolToCar                Conversion of spherical coordinates to 3d
                        Cartesian coordinates
SpLines                 SpatialLines class object from an icosahedral
                        grid
SpPolygons              Spatial polygons from an icosahedral grid
[<-,gridlayer,ANY,ANY-method
                        Replacement of elements in a gridlayer object.
arcdist                 Calculation of distances along arcs
arcdistmat              Calculation of distance matrices along arcs
arcpoints               Calculation of points along an arc
centers                 The face centers of an icosahedral grid object
chullsphere             Spherical convex hull
edgelength              Lengths of grid edges
edgelength,trigrid-method
                        Lengths of grid edges
edges                   The edges of a 3d object
facelayer               Container for data storage using the faces on
                        icosahedral grid
faces                   The faces of a 3d object
faces3d                 Methods of 3d face plotting.
gridgraph               Create or instantiate an 'igraph' class graph
                        from the faces of an icosahedral grid
gridlabs                Labels of grid vertices, faces and edges
gridlabs3d              Display the names of the grid elements in 3d
                        plots.
guides3d                Guides for 3d spherical plotting.
heatMapLegend           Legend for a heatmap with predefined colors.
hexagrid                A penta-hexagonal icosahedral grid
icosa                   Global Triangular and Hexa-Pentagonal Grids
                        Based on Tessellated Icosahedra
length,trigrid-method   The length of a trigrid or, hexagrid class
                        object.
lines,trigrid-method    Lines method for the trigrid and hexagrid
                        classes
lines3d,Line-method     3d plotting method of a Line class object
lines3d,trigrid-method
                        Methods of 3d line plotting.
locate                  Basic lookup function of coordinates on an
                        icosahedral grid
names,gridlayer-method
                        The face names in a gridlayer class object
newgraph                Add an igraph object to a predefined slot in a
                        trigrid or hexagrid object
newsp                   Add SpatialPolygons object to a predefined slot
                        in a trigrid or hexagrid object
occupied                Faces occupied by the specified object
orientation             Extracting the grid orientation
plot,facelayer,ANY-method
                        2d plotting of a facelayer class object This
                        function will invoke the 2d plotting methods of
                        a grid so data stored in a facelayer object can
                        be displayed.
plot3d,facelayer-method
                        3d plotting of a facelayer of an icosahedral
                        grid or its subset
plot3d,trigrid-method   3d plotting of an icosahedral grid or its
                        subset
pos                     Position of face centers and vertices on a grid
resample,Raster,trigrid-method
                        Resampling of data to a trigrid or a hexagrid
                        object.
rotate,trigrid-method   Rotation method of trigrid and hexagrid objects
rpsphere                Random point generation on the surface of a
                        sphere
subset,trigrid-method   Subsetting an icosahedral grid
surfacearea             Areas of grid cell surfaces
surfacecentroid         Surface centroid point of a spherical point
                        cloud
translate               Translating the grid object in 3d Cartesian
                        space
trigrid                 A triangular icosahedral grid
trishape                Shape distortions of the triangular faces and
                        subfaces
values,gridlayer-method
                        Extract values from a gridlayer
vertices                The vertices of an icosahedral grid object
vicinity                The neighbouring faces of faces in an
                        icosahedral grid
