Description Usage Arguments Details See Also Examples
This function plots the α-shape in 3D using the package
rgl
.
1 2 3 4 |
x |
An object of class |
clear |
Logical, specifying whether the current rgl device should be cleared. |
col |
A vector of length three specifying the colors of the triangles, edges and vertices composing the α-shape, respectively. |
byComponents |
Logical, if TRUE the connected components of the
α-shape are represented in different colors, see
|
indexAlpha |
A single value or vector with the indexes of
|
transparency |
The coefficient of transparency, from 0 (transparent) to 1 (opaque), used to plot the α-shape. |
walpha |
Logical, if TRUE the value of α is displayed in the rgl device. |
triangles |
Logical, if TRUE triangles are plotted. |
edges |
Logical, if TRUE edges are plotted. |
vertices |
Logical, if TRUE vertices are plotted. |
... |
Material properties. See |
The function plot.ashape3d
opens a rgl device for each value of
α in x$alpha[indexAlpha]
. Device information is displayed
in the console.
If indexAlpha="all"
or indexAlpha="ALL"
then the function
represents the α-shape for all values of α in
as3d$alpha
.
1 2 3 4 5 6 7 8 9 10 11 | T1 <- rtorus(1000, 0.5, 2)
T2 <- rtorus(1000, 0.5, 2, ct = c(2, 0, 0), rotx = pi/2)
x <- rbind(T1, T2)
alpha <- c(0.15, 0.25, 1)
ashape3d.obj <- ashape3d(x, alpha = alpha)
# Plot the alpha-shape for all values of alpha
plot(ashape3d.obj, indexAlpha = "all")
# Plot the connected components of the alpha-shape for alpha=0.25
plot(ashape3d.obj, byComponents = TRUE, indexAlpha = 2)
|
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