setbreaks {unfoldr} | R Documentation |
Construct class limits vectors
setbreaks(nclass, maxSize, base = NULL, kap = 1, sizeType = c("linear", "exp"))
nclass |
number of classes |
maxSize |
maximum of |
base |
constant for size class construction |
kap |
constant for shape class construction |
sizeType |
either |
The function constructs the class limits for the size, shape and orientation parameters.
One can either define linear
class limits of 'size' as
a_i=iδ, δ=maxSize/M or using exponentially increasing limits: base^i, i=1,…,M.
The orientation classes are defined as θ_j=jω, ω=π/(2N), j=1,…,N in the range
[0,π/2], where M,N are the number of size classes and the number of orientation classes, respectively.
Argument base
must not be NULL
if sizeType
equals "exp".
list of class limits vectors