Global Triangular and Penta-Hexagonal Grids Based on Tessellated Icosahedra


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Documentation for package ‘icosa’ version 0.12.0

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A C E F G H I L N O P R S T V misc

icosa-package Global Triangular and Hexa-Pentagonal Grids Based on Tessellated Icosahedra

-- A --

arcdist Calculation of distances along arcs
arcdistmat Calculation of distance matrices along arcs
arcpoints Calculation of point coordinates along an arc
arcs Function to plot a set of great circle arcs between points
arcs-method Function to plot a set of great circle arcs between points

-- C --

CarToPol Conversion of 3d Cartesian coordinates to polar coordinates
CarToPol-method Conversion of 3d Cartesian coordinates to polar coordinates
cellocator Locate grid faces based on their positions on a map
centers The face centers of an icosahedral grid object
centers-method The face centers of an icosahedral grid object
chullsphere Spherical convex hull.

-- E --

edgelength Lengths of grid edges
edgelength-method Lengths of grid edges
edges The edges of a 3d object
edges-method The edges of a 3d object

-- F --

face2nb Make an spdep-style neighbor list for an icosahedral grid
facelayer A 'facelayer' linked to a 'trigrid' or 'hexagrid' object
facelayer-class A 'facelayer' linked to a 'trigrid' or 'hexagrid' object
faces The face names of a trigrid or hexagrid object
faces-method The face names of a trigrid or hexagrid object
faces3d Methods of 3D face plotting.
faces3d-method Methods of 3D face plotting.

-- G --

grapply Icosahedral grid-based density estimation Spatial density estimation algorithm based on rotation of icosahedral grids.
grapply-method Icosahedral grid-based density estimation Spatial density estimation algorithm based on rotation of icosahedral grids.
gridensity Icosahedral grid-based density estimation Spatial density estimation algorithm based on rotation of icosahedral grids.
gridgraph Create or instantiate an 'graph' class graph from the faces of an icosahedral grid
gridgraph-method Create or instantiate an 'graph' 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.
gridlabs3d-method Display the names of the grid elements in 3d plots.
guides3d Guides for 3d spherical plotting.

-- H --

heatMapLegend Legend for a heatmap with predefined colors.
hexagrid Construct a penta-hexagonal icosahedral grid
hexagrid-class Construct a penta-hexagonal icosahedral grid
hexguide Tessellation guide to 'hexagrid' objects
holes Holes of shapes on an icosahedral grid
holes-method Holes of shapes on an icosahedral grid

-- I --

icosa Global Triangular and Hexa-Pentagonal Grids Based on Tessellated Icosahedra

-- L --

length-method The number of faces in a 'trigrid' or 'hexagrid' class object.
lines-method Lines method for the 'trigrid' and 'hexagrid' classes
lines3d Methods of 3d line plotting
lines3d-method Methods of 3d line plotting
locate Basic lookup function of coordinates on an icosahedral grid
locate-method Basic lookup function of coordinates on an icosahedral grid

-- N --

names-method The face names in a 'facelayer' class object
newgraph Add an igraph object to a predefined slot in an icosahedral grid
newgraph-method Add an igraph object to a predefined slot in an icosahedral grid
newsf Add a 'sf' object to a predefined slot in a 'trigrid' or 'hexagrid' object
newsf-method Add a 'sf' object to a predefined slot in a 'trigrid' or 'hexagrid' object
newsp Add a 'SpatialPolygons' object to a predefined slot in a 'trigrid' or 'hexagrid' object
newsp-method Add a 'SpatialPolygons' object to a predefined slot in a 'trigrid' or 'hexagrid' object

-- O --

occupied Faces occupied by the specified object
orientation Extracting and setting the grid orientation
orientation-method Extracting and setting the grid orientation
orientation<- Extracting and setting the grid orientation
orientation<--method Extracting and setting the grid orientation

-- P --

patches Patches of shapes on an icosahedral grid
patches-method Patches of shapes on an icosahedral grid
plot Plot method for the 'trigrid', 'hexagrid' or 'facelayer' classes
plot-method Plot method for the 'trigrid', 'hexagrid' or 'facelayer' classes
plot3d 3d plotting of an icosahedral grid, its subset or a data layer
plot3d.facelayer 3d plotting of an icosahedral grid, its subset or a data layer
plot3d.hexagrid 3d plotting of an icosahedral grid, its subset or a data layer
plot3d.trigrid 3d plotting of an icosahedral grid, its subset or a data layer
PolToCar Conversion of polar coordinates to 3d Cartesian coordinates
PolToCar-method Conversion of polar coordinates to 3d Cartesian coordinates
pos Position of face centers and vertices on a grid

-- R --

resample Resampling of data involving a 'trigrid' or a 'hexagrid' object.
resample-method Resampling of data involving a 'trigrid' or a 'hexagrid' object.
rotate Rotation of 3d objects
rotate-method Rotation of 3d objects
rpsphere Random point generation on the surface of a sphere

-- S --

saveOBJ Export trigrid class object as Wavefront .obj file
saveOBJ-method Export trigrid class object as Wavefront .obj file
spacing Spacing of cell centers
spacing-method Spacing of cell centers
SpLines Create a 'SpatialLines' class object from an icosahedral grid
SpLines-method Create a 'SpatialLines' class object from an icosahedral grid
SpPolygons Spatial polygons from an icosahedral grid
SpPolygons-method Spatial polygons from an icosahedral grid
subset Subsetting an icosahedral grid or data layers organized with them
subset-method Subsetting an icosahedral grid or data layers organized with them
surfacearea Areas of grid cell surfaces
surfacearea-method Areas of grid cell surfaces
surfacecentroid Surface centroid point of a spherical point cloud
surfacecentroid-method Surface centroid point of a spherical point cloud

-- T --

translate Translating an icosahedral grid object in 3d Cartesian space
translate-method Translating an icosahedral grid object in 3d Cartesian space
trigrid A triangular icosahedral grid
trigrid-class A triangular icosahedral grid
triguide Tessellation guide to 'trigrid' objects
trishape Shape distortions of the triangular faces and subfaces
trishape-method Shape distortions of the triangular faces and subfaces

-- V --

values Extract and replace values from a gridlayer-derived object (e.g. 'link{facelayer}').
values-method Extract and replace values from a gridlayer-derived object (e.g. 'link{facelayer}').
values<- Extract and replace values from a gridlayer-derived object (e.g. 'link{facelayer}').
values<--method Extract and replace values from a gridlayer-derived object (e.g. 'link{facelayer}').
vertexradius Calculate the vertex radii of icosahedral grid faces
vertices The vertices of an icosahedral grid object
vertices-method The vertices of an icosahedral grid object
vicinity The neighbouring faces of faces in an icosahedral grid
vicinity-method The neighbouring faces of faces in an icosahedral grid

-- misc --

[-method Extraction from a gridlayer using indices
[-method Subsetting an icosahedral grid or data layers organized with them
[<--method Extraction from a gridlayer using indices