Description Usage Arguments Value Author(s) See Also Examples
This function detects whether a db.obj
object is a
categorical object.
1 2 | ## S4 method for signature 'db.obj'
is.factor(x)
|
x |
A |
A logical value. When all columns of db.obj
are
categorical variables, this function returns TRUE
.
Author: Predictive Analytics Team at Pivotal Inc.
Maintainer: Frank McQuillan, Pivotal Inc. fmcquillan@pivotal.io
as.factor,db.obj-method
converts a column
db.obj
of into categorical variables.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | ## Not run:
## 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)
## End(Not run)
|
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