Quadrangle Mesh
Barycentric triangle index for interpolation
Angular coordinates to X, Y, Z.
Plot as a mesh
Quadmesh to raster
Quadrilateralized Spherical Cube (QSC)
quadmesh: Quadrangle Mesh
Create a quad-type mesh for use in rgl.
Coordinate reprojection
Create a triangle-type mesh for use in rgl.
Triangles from quads
In-use coordinate system
Create surface forms from matrix or 'raster' data for flexible plotting and conversion to other mesh types. The functions 'quadmesh' or 'triangmesh' produce a continuous surface as a 'mesh3d' object as used by the 'rgl' package. This is used for plotting raster data in 3D (optionally with texture), and allows the application of a map projection without data loss and many processing applications that are restricted by inflexible regular grid rasters. There are discrete forms of these continuous surfaces available with 'dquadmesh' and 'dtriangmesh' functions.