grecip {sna} | R Documentation

## Compute the Reciprocity of an Input Graph or Graph Stack

### Description

`grecip` calculates the dyadic reciprocity of the elements of `dat` selected by `g`.

### Usage

    grecip(dat, g = NULL, measure = c("dyadic", "dyadic.nonnull",
        "edgewise"))

### Arguments

`dat` | one or more input graphs.
`g` | a vector indicating which graphs to evaluate (optional).
`measure` | one of `"dyadic"` (default), `"dyadic.nonnull"` or `"edgewise"`.

### Details

The dyadic reciprocity of a graph is the proportion of dyads which are symmetric; this is computed and returned by `grecip` for the graphs indicated. (`dyadic.nonnull` returns the ratio of mutuals to non-null dyads.) Note that the dyadic reciprocity is distinct from the edgewise or tie reciprocity, which is the proportion of edges which are reciprocated. This latter form may be obtained by setting `measure="edgewise"`.

### Value

The graph reciprocity value(s)

### Author(s)

Carter T. Butts buttsc@uci.edu

### References

Wasserman, S., and Faust, K. (1994). Social Network Analysis: Methods and Applications. Cambridge: Cambridge University Press.

### See Also

`mutuality`, `symmetrize`

### Examples

    #Calculate the dyadic reciprocity scores for some random graphs
    grecip(rgraph(10,5))

[Package sna version 1.1 Index]