ahn_gen {AnimalHabitatNetwork}  R Documentation 
Generate undirected networks (weighted or unweighted, connected or disconnected) characterising the physical attributes and spatial organizations (or distributions) of habitat components (i.e. habitat configurations).
ahn_gen(N, L, mu, lamda, Connected = TRUE, Weighted = TRUE, eta = 1, A = 25, X = NULL, Y = NULL, U = NULL, V = NULL)
N 
The number of nodes 
L 
A side length of the rectangle landscape within which nodes are anchored 
mu 
the critical 
lamda 
the steepness of the link removing probability curve 
Connected 

Weighted 

eta 
mediates the weight, i.e. 
A 
The area of the rectangle landscape within which the network is defined 
X 
A vector of 
Y 
A vector of 
U 
A vector with 
V 
A vector with 
Return an animal habitat network (an igraph
object)
# generate a connected and weighted network ahn_gen(N = 10, L = 5, mu = 1, lamda = 5) N < 10 x < runif(N, 0, 5) ql < sample(LETTERS, N, replace = TRUE) qn < sample(1:20, N, replace = TRUE) # specify the X coordinates, node attributes U and V for a connected and unweighted network ahn_gen(N, L = 5, mu = 1, lamda = 5, Weighted = FALSE, X = x, U = ql, V = qn) # specify the Y coordinates, node attributes U and V for a weighted network, no matter if the # network will be connected or not ahn_gen(N, L = 5, mu = 1, lamda = 5, Weighted = TRUE, Connected = FALSE, Y = x, U = ql, V = qn)