Create a Set of Tetrahetra Centered at Data Points
Creates a scene consisting of small tetrahedra centered at specified data points in three dimensions.
pointsTetrahedra(x, y, z, size = 0.01, color = "black", ...)
x, y, z |
numeric vectors representing point coordinates. |
size |
numeric; multiple of data range to use for the size of the tetrahedron in each dimension; recycled to length 3. |
color |
color to use for the tetrahedra. |
... |
additional arguments to be passed on to
|
This function is useful, for example, for incorporating raw data along
with a density estimate surface in a scene rendered using standard or
grid graphics. For rgl rendering points3d is
an alternative.
Returns a triangle mesh scene representing the tetrahedra.
with(quakes, {
d <- kde3d(long, lat, -depth, n = 40)
v <- contour3d(d$d, exp(-12),d$x/22, d$y/28, d$z/640,
color="green", color2="gray", draw=FALSE)
p <- pointsTetrahedra(long/22, lat/28, -depth/640,
size = 0.005)
drawScene(list(v, p))
})Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.