array2linkmx | R Documentation |
Function to turn an array with sites as third dimension into a web by link matrix (e.g. sites X links). This is the "link community matrix" to use for dissimilarity calculations. Mostly just a helper function for betalinkr
.
array2linkmx(webarray)
webarray |
An array of two or more networks. Assumes the third dimension is the webID in the array, which will become the first dimension in the link-matrix (output). |
This function converts the two-dimensional adjacency matrices (i.e., bipartite webs) to one-dimensional vectors (similar to what network people call “edgelists”). These vectors become rows of a matrix (which has one row per web). This makes the data available to community ecology methods, e.g. those offered by the vegan
package. Links are treated equivalently to species in a “normal” community analysis (note that it makes no difference whether one or both partner of an interaction differ, in both cases the link has a different identity). The function is used here mostly as a helper for interaction dissimilarity calculations with betalinkr
.
dimnames
are optional but recommended for the webarray. Names of the third dimension will become rownames in the output. Colnames (i.e. names of links) will be created from dimnames[[1]] (“lower species”) and dimnames[[2]] (“higher species”), separated by “__” (double underscore).
A matrix with one row per web and one column per link (i.e. per combination of lower and higher species). All-zero columns may often be included.
Jochen Fründ
array2linkmx(webs2array(Safariland, vazquenc))
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