PivotalR (version 0.1.18.5)

is.factor-methods: Detect whether a '>db.obj object is a categorical object

Description

This function detects whether a '>db.obj object is a categorical object.

Usage

# S4 method for db.obj
is.factor(x)

Arguments

x

A '>db.obj object.

Value

A logical value. When all columns of '>db.obj are categorical variables, this function returns TRUE.

See Also

as.factor,db.obj-method converts a column '>db.obj of into categorical variables.

Examples

# NOT RUN {
<!-- %% @test .port Database port number -->
<!-- %% @test .dbname Database name -->
## set up the database connection
## Assume that .port is port number and .dbname is the database name
cid <- db.connect(port = .port, dbname = .dbname, verbose = FALSE)

## create a table from the example data.frame "abalone"
x <- as.db.data.frame(abalone, conn.id = cid, verbose = FALSE)

## set sex to be a categorical variable
x$sex <- as.factor(x$sex)

is.factor(x$sex)

is.factor(x)

db.disconnect(cid, verbose = FALSE)
# }