Dear R users,
I used to be able to use the package bipartite to calculate network metrics
using the function networklevel, but now (with the new version 1.14) I keep
getting the error messages below. I don't understand why I am getting these
error messages given that colSums is not < 2, and the network isn't that
small. I get the same error message ("Web is really too small...") even with
larger webs. I also switched to a Mac recently.
>
Error in colSums(web) : 'x' must be an array of at least two dimensions
In addition: Warning message:
In networklevel(m, index = c("nestedness", "connectance", "links per
species", :
Web is really too small to calculate any reasonable index. You will get the
values nonetheless, but I wouldn't put any faith in them!
The web I used is:
>m
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13]
[1,] 7 6 2 2 8 2 5 2 17 8 0 1 3
[2,] 2 1 6 2 1 0 3 2 5 4 0 1 4
[3,] 0 0 0 0 0 0 0 0 0 0 0 0 0
[4,] 3 7 5 11 2 2 6 2 18 8 0 2 4
[5,] 0 0 0 4 2 0 1 1 1 3 0 2 0
[6,] 3 3 0 3 1 1 1 2 8 5 0 0 3
[7,] 0 0 1 0 1 0 0 0 4 1 0 1 1
[8,] 2 0 2 1 1 0 1 0 2 2 0 1 2
[9,] 1 1 0 1 0 1 0 0 6 2 0 1 1
[10,] 2 2 4 7 4 4 3 1 11 8 0 1 2
[,14] [,15] [,16] [,17] [,18] [,19] [,20] [,21] [,22] [,23] [,24] [,25]
[1,] 4 0 3 0 2 1 2 9 5 12 8 17
[2,] 4 0 0 0 4 1 2 0 3 4 3 1
[3,] 0 0 0 0 0 0 0 0 0 0 0 0
[4,] 5 0 3 0 1 3 3 8 9 10 4 10
[5,] 1 0 0 0 0 2 0 3 0 1 2 2
[6,] 0 0 1 0 1 1 1 4 1 2 4 5
[7,] 1 0 0 0 0 0 0 2 1 3 4 3
[8,] 0 0 0 0 0 0 0 1 0 0 5 2
[9,] 2 0 1 0 1 0 0 1 0 3 1 4
[10,] 3 0 2 0 1 2 2 3 1 6 0
7
[,26] [,27] [,28] [,29] [,30]
[1,] 5 1 3 4 3
[2,] 0 1 1 1 1
[3,] 0 0 0 0 0
[4,] 2 2 2 5 5
[5,] 0 1 1 0 1
[6,] 1 0 2 3 1
[7,] 1 1 0 1 2
[8,] 0 1 0 4 1
[9,] 0 0 1 0 0
[10,] 1 3 0 2 3
Sincerely,
Scott Chamberlain
Rice University, EEB Dept.
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