This function requires the bigdata library section to be loaded.
as.bdVector(x) as.bdVector.data.frame(x) is.bdVector(x)
data.frame
,
bdFrame
, a vector,
or
bdVector
.
For
is.bdVector
, any S-PLUS object.
as.bdVector
returns an object that inherits from
bdVector
of an appropriate type, such as
bdCharacter
,
bdFactor
,
bdLogical
,
bdNumeric
, or
bdTimeDate
.
(There should never be an object that actually has class
"bdVector"
, only objects that inherit from this class.)
If
x
is a single column
data.frame
, the method
as.bdVector.data.frame
is called.
is.bdVector
returns
TRUE
if
x
inherits from
bdVector
, and
FALSE
otherwise.
dat <- as.bdFrame(fuel.frame) vec <- dat[,1] is.bdVector(vec) as.bdVector(rnorm(100000)) as.bdVector(fuel.frame[,1, drop=F])