sphere.grid | R Documentation |
generate grids on sphere
sphere.grid(N = 2, lower = TRUE, ico = TRUE)
N |
number of refinenemts |
lower |
return also the lower hemishpere? |
ico |
use triangulation based on icosahedron (req. rgl)? N is then takes as refinement steps, should be <5! #' Two ways: A) a decreasing radius ring of N points from equator to pole with alternating 2pi/N shift. Concentrates on the poles, useful for statitical estimation if the pole area is where things happen. B) Triangulation by refining an icosahedron. Returns latitude-longitude matrix. use ll2xyz or ll2ai for transformation. |
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