surface3d {rgl} | R Documentation |
Adds a surface to the current scene. The surface is defined by a matrix defining the height of each grid point and two vectors defining the grid.
surface3d(x, y, z, ...) terrain3d(x, y, z, ...)
x |
values corresponding to rows of z
|
y |
values corresponding to the columns of z
|
z |
matrix of heights |
... |
Material and texture properties. See rgl.material for details. |
Adds a surface mesh to the current scene. The surface is defined by
the matrix of height values in z
, with rows corresponding
to the values in x
and columns corresponding to the values in
y
. This is the same parametrization as used in persp
.
surface3d
always draws the surface with the `front' upwards
(i.e. towards higher z
values). This can be used to render
the top and bottom differently; see rgl.material
and
the example below.
For more flexibility in defining the surface, use rgl.surface
.
surface3d
and terrain3d
are synonyms.
rgl.material
, rgl.surface
, persp
# # volcano example taken from "persp" # data(volcano) z <- 2 * volcano # Exaggerate the relief x <- 10 * (1:nrow(z)) # 10 meter spacing (S to N) y <- 10 * (1:ncol(z)) # 10 meter spacing (E to W) zlim <- range(y) zlen <- zlim[2] - zlim[1] + 1 colorlut <- terrain.colors(zlen) # height color lookup table col <- colorlut[ z-zlim[1]+1 ] # assign colors to heights for each point open3d() surface3d(x, y, z, color=col, back="lines")