gamix: Gupta-Anderson-May measure of within-group mixing

Description Usage Arguments Details Value References See Also Examples

View source: R/gamix.R

Description

Measure of within-group mixing in networks proposed in Gupta, Anderson and May (1989).

Usage

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gamix(object, ...)

## S3 method for class 'table'
gamix(object, ...)

## S3 method for class 'igraph'
gamix(object, vattr, ...)

## Default S3 method:
gamix(object, ...)

Arguments

object

R object, see Details for available methods

...

other objects passed to/from other methods

vattr

character, name of vertex attribute

Details

The measure varies between -1/vcount(g) for dissassortative mixing and 1 for perfect within-group mixing. It takes a value of 0 for proportionate mixing.

If object is a table it is interpreted as a mixing matrix. Two-dimensional table is interpreted as a contact layer. Three-dimensional table is interpreted as a full mixing matrix m[ghy] cross-classyfying all dyads, in which g and h correspond to group membership of ego and alter respectively. Layers y=1 and y=2 are assumed to be non-contact and contact layers respectively.

If object is of class "igraph" it is required to supply vattr with the name of the vertex attribute to calculate intermediate mixing matrix.

Value

Numerical value of the measure.

References

Gupta, S., Anderson, R., May, R. (1989) "Networks of sexual contacts: implications for the pattern of spread of HIV", AIDS 3:807–817

See Also

Other segregation measures: assort(), coleman(), ei(), freeman(), orwg(), smi(), ssi()

Examples

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gamix(WhiteKinship, "gender")
gamix(EF3, "race")

netseg documentation built on Feb. 17, 2021, 9:06 a.m.