A database-backed survey design object contains a connection to a
database. This connection will be broken if the object is saved and
reloaded, and the connection should ideally be closed with
before quitting R (although it doesn't matter for SQLite
connections). The connection can be reopened with
## S3 method for class 'DBIsvydesign' open(con, ...) ## S3 method for class 'DBIsvydesign' close(con, ...)
Object of class
Other options, to be passed to
The same survey design object with the connection opened or closed.
## Not run: library(RSQLite) dbclus1<-svydesign(id=~dnum, weights=~pw, fpc=~fpc, data="apiclus1",dbtype="SQLite", dbname=system.file("api.db",package="survey")) dbclus1 close(dbclus1) dbclus1 try(svymean(~api00, dbclus1)) dbclus1<-open(dbclus1) open(dbclus1) svymean(~api00, dbclus1) ## End(Not run)
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