This function requires the bigdata library section to be loaded.
bdNumeric(length = 0) as.bdNumeric(x) is.bdNumeric(x)
bdVector,
or single-column
bdFrame.
Any S-PLUS object for
is.bdNumeric.
bdNumeric and
as.bdNumeric
return an object of class
bdNumeric, the big data analog of a
numeric (
double) vector.
is.bdNumeric returns
TRUE if
x
inherits from
bdNumeric, and
FALSE otherwise.
bdNumeric(10^9)
is.bdNumeric( 1:30 ) # FALSE
is.bdNumeric( as.bdNumeric(1:30) ) # TRUE
as.bdNumeric(1:5)
as.bdNumeric(c(a=1, b=2)) # names are discarded
as.bdNumeric(c("1.2", "3.4")) # converted to numerical values
as.bdNumeric(as.bdCharacter(c("1.2", "3.4"))) # ditto
as.bdNumeric(factor(c("b","a","c"))) # three missing values
as.bdNumeric(as.bdFactor(c("b","a","c"))) # ditto
as.bdNumeric(matrix(1:6, 3)) # stops -- will not convert multiple columns