Computes node count, edge count, density, mean shortest-path distance,
mean and SD of in/out strength, mean and SD of in/out degree, in/out
degree centralization (Freeman), and reciprocity. Mirrors the metric set
returned by tna::summary.tna() so a Nestimate netobject and the
equivalent tna model report numerically identical descriptive metrics.
Usage
# S3 method for class 'netobject'
summary(object, ...)