Survey design weights

Extract weights from a survey design object.

# S3 method for survey.design
weights(object, ...)
# S3 method for svyrep.design
weights(object,
type=c("replication","sampling","analysis"), ...)
# S3 method for survey_fpc
weights(object,final=TRUE,...)

Arguments

object

Survey design object

type

Type of weights: "analysis" combines sampling and replication weights.

final

If FALSE return a data frame with sampling weights at each stage of sampling.

...

Other arguments ignored

Value

vector or matrix of weights

See also

svydesign, svrepdesign, as.fpc

Examples

data(scd)


scddes<-svydesign(data=scd, prob=~1, id=~ambulance, strata=~ESA,
                 nest=TRUE, fpc=rep(5,6))
repweights<-2*cbind(c(1,0,1,0,1,0), c(1,0,0,1,0,1), c(0,1,1,0,0,1), c(0,1,0,1,1,0))
scdrep<-svrepdesign(data=scd, type="BRR", repweights=repweights)
#> Warning: No sampling weights provided: equal probability assumed

weights(scdrep)
#>      [,1] [,2] [,3] [,4]
#> [1,]    2    2    0    0
#> [2,]    0    0    2    2
#> [3,]    2    0    2    0
#> [4,]    0    2    0    2
#> [5,]    2    0    0    2
#> [6,]    0    2    2    0
weights(scdrep, type="sampling")
#> [1] 1 1 1 1 1 1
weights(scdrep, type="analysis")
#>      [,1] [,2] [,3] [,4]
#> [1,]    2    2    0    0
#> [2,]    0    0    2    2
#> [3,]    2    0    2    0
#> [4,]    0    2    0    2
#> [5,]    2    0    0    2
#> [6,]    0    2    2    0
weights(scddes)
#> [1] 1 1 1 1 1 1