Description Usage Arguments Details Value See Also Examples
This function calculates the volume of the αshape of a given sample of points in the threedimensional space.
1  volume_ashape3d(as3d, byComponents = FALSE, indexAlpha = 1)

as3d 
An object of class 
byComponents 
Logical, if FALSE (default) 
indexAlpha 
A single value or vector with the indexes of

The function volume_ashape3d
computes the volume of the
αshape for each value of α in
as3d$alpha[indexAlpha]
when indexAlpha
is numeric.
If indexAlpha="all"
or indexAlpha="ALL"
then the function
computes the volume of the αshape for all values of α
in as3d$alpha
.
If indexAlpha
is a single value then the function returns the
volume of the αshape (if the argument byComponents
is set
to FALSE) or a vector with the volumes of each connected component of the
αshape (if the argument byComponents
is set to TRUE).
Otherwise volume_ashape3d
returns a list (each object in the list as
described above).
1 2 3 4 5 6 7 8 9 10  C1 < matrix(runif(6000), nc = 3)
C2 < matrix(runif(6000), nc = 3) + 2
x < rbind(C1, C2)
ashape3d.obj < ashape3d(x, alpha = 0.75)
plot(ashape3d.obj, byComponents = TRUE)
# Compute the volume of the alphashape
volume_ashape3d(ashape3d.obj)
# Compute the volumes of the connected components of the alphashape
volume_ashape3d(ashape3d.obj, byComponents = TRUE)

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