vec2mat.RdThe number of elements of vec are the number of non-zero elements in the adjacency matrix. It performs the opposite operation of `mat2vec.ix`.
vec2mat(vec, directed, selfloops, n)vector to be put in matrix form
a boolean argument specifying whether object is directed or not.
a boolean argument specifying whether the model should incorporate selfloops.
vector. if length(n)==1, n is the number of vertices. If length(n)==3 first element is number of vertices, second and third elements are number of vertices for row and column of bipartite matrix.
matrix nxn generated from vector.
data('adj_karate')
ix <- mat2vec.ix(adj_karate, FALSE, FALSE)
vec <- adj_karate[ix]
vec2mat(vec, FALSE, FALSE, nrow(adj_karate))
#> [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13]
#> [1,] 0 4 5 3 3 3 3 2 2 0 2 3 1
#> [2,] 4 0 6 3 0 0 0 4 0 0 0 0 0
#> [3,] 5 6 0 3 0 0 0 4 5 1 0 0 0
#> [4,] 3 3 3 0 0 0 0 3 0 0 0 0 3
#> [5,] 3 0 0 0 0 0 2 0 0 0 3 0 0
#> [6,] 3 0 0 0 0 0 5 0 0 0 3 0 0
#> [7,] 3 0 0 0 2 5 0 0 0 0 0 0 0
#> [8,] 2 4 4 3 0 0 0 0 0 0 0 0 0
#> [9,] 2 0 5 0 0 0 0 0 0 0 0 0 0
#> [10,] 0 0 1 0 0 0 0 0 0 0 0 0 0
#> [11,] 2 0 0 0 3 3 0 0 0 0 0 0 0
#> [12,] 3 0 0 0 0 0 0 0 0 0 0 0 0
#> [13,] 1 0 0 3 0 0 0 0 0 0 0 0 0
#> [14,] 3 5 3 3 0 0 0 0 0 0 0 0 0
#> [15,] 0 0 0 0 0 0 0 0 0 0 0 0 0
#> [16,] 0 0 0 0 0 0 0 0 0 0 0 0 0
#> [17,] 0 0 0 0 0 3 3 0 0 0 0 0 0
#> [18,] 2 1 0 0 0 0 0 0 0 0 0 0 0
#> [19,] 0 0 0 0 0 0 0 0 0 0 0 0 0
#> [20,] 2 2 0 0 0 0 0 0 0 0 0 0 0
#> [21,] 0 0 0 0 0 0 0 0 0 0 0 0 0
#> [22,] 2 2 0 0 0 0 0 0 0 0 0 0 0
#> [23,] 0 0 0 0 0 0 0 0 0 0 0 0 0
#> [24,] 0 0 0 0 0 0 0 0 0 0 0 0 0
#> [25,] 0 0 0 0 0 0 0 0 0 0 0 0 0
#> [26,] 0 0 0 0 0 0 0 0 0 0 0 0 0
#> [27,] 0 0 0 0 0 0 0 0 0 0 0 0 0
#> [28,] 0 0 2 0 0 0 0 0 0 0 0 0 0
#> [29,] 0 0 2 0 0 0 0 0 0 0 0 0 0
#> [30,] 0 0 0 0 0 0 0 0 0 0 0 0 0
#> [31,] 0 2 0 0 0 0 0 0 3 0 0 0 0
#> [32,] 2 0 0 0 0 0 0 0 0 0 0 0 0
#> [33,] 0 0 2 0 0 0 0 0 3 0 0 0 0
#> [34,] 0 0 0 0 0 0 0 0 4 2 0 0 0
#> [,14] [,15] [,16] [,17] [,18] [,19] [,20] [,21] [,22] [,23] [,24] [,25]
#> [1,] 3 0 0 0 2 0 2 0 2 0 0 0
#> [2,] 5 0 0 0 1 0 2 0 2 0 0 0
#> [3,] 3 0 0 0 0 0 0 0 0 0 0 0
#> [4,] 3 0 0 0 0 0 0 0 0 0 0 0
#> [5,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [6,] 0 0 0 3 0 0 0 0 0 0 0 0
#> [7,] 0 0 0 3 0 0 0 0 0 0 0 0
#> [8,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [9,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [10,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [11,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [12,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [13,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [14,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [15,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [16,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [17,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [18,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [19,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [20,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [21,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [22,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [23,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [24,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [25,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [26,] 0 0 0 0 0 0 0 0 0 0 5 2
#> [27,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [28,] 0 0 0 0 0 0 0 0 0 0 4 3
#> [29,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [30,] 0 0 0 0 0 0 0 0 0 0 3 0
#> [31,] 0 0 0 0 0 0 0 0 0 0 0 0
#> [32,] 0 0 0 0 0 0 0 0 0 0 0 2
#> [33,] 0 3 3 0 0 1 0 3 0 2 5 0
#> [34,] 3 2 4 0 0 2 1 1 0 3 4 0
#> [,26] [,27] [,28] [,29] [,30] [,31] [,32] [,33] [,34]
#> [1,] 0 0 0 0 0 0 2 0 0
#> [2,] 0 0 0 0 0 2 0 0 0
#> [3,] 0 0 2 2 0 0 0 2 0
#> [4,] 0 0 0 0 0 0 0 0 0
#> [5,] 0 0 0 0 0 0 0 0 0
#> [6,] 0 0 0 0 0 0 0 0 0
#> [7,] 0 0 0 0 0 0 0 0 0
#> [8,] 0 0 0 0 0 0 0 0 0
#> [9,] 0 0 0 0 0 3 0 3 4
#> [10,] 0 0 0 0 0 0 0 0 2
#> [11,] 0 0 0 0 0 0 0 0 0
#> [12,] 0 0 0 0 0 0 0 0 0
#> [13,] 0 0 0 0 0 0 0 0 0
#> [14,] 0 0 0 0 0 0 0 0 3
#> [15,] 0 0 0 0 0 0 0 3 2
#> [16,] 0 0 0 0 0 0 0 3 4
#> [17,] 0 0 0 0 0 0 0 0 0
#> [18,] 0 0 0 0 0 0 0 0 0
#> [19,] 0 0 0 0 0 0 0 1 2
#> [20,] 0 0 0 0 0 0 0 0 1
#> [21,] 0 0 0 0 0 0 0 3 1
#> [22,] 0 0 0 0 0 0 0 0 0
#> [23,] 0 0 0 0 0 0 0 2 3
#> [24,] 5 0 4 0 3 0 0 5 4
#> [25,] 2 0 3 0 0 0 2 0 0
#> [26,] 0 0 0 0 0 0 7 0 0
#> [27,] 0 0 0 0 4 0 0 0 2
#> [28,] 0 0 0 0 0 0 0 0 4
#> [29,] 0 0 0 0 0 0 2 0 2
#> [30,] 0 4 0 0 0 0 0 4 2
#> [31,] 0 0 0 0 0 0 0 3 3
#> [32,] 7 0 0 2 0 0 0 4 4
#> [33,] 0 0 0 0 4 3 4 0 5
#> [34,] 0 2 4 2 2 3 4 5 0