| gamix {netseg} | R Documentation |
Gupta-Anderson-May measure of within-group mixing
Description
Measure of within-group mixing in networks proposed in Gupta, Anderson and May (1989).
Usage
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
gamix(WhiteKinship, "gender")
gamix(EF3, "race")