Usage
## S3 method for class 'default}(colClasses, nrow=1, ...)':
dataFrameundefined
Allocates a data frame with given column classes.
- colClasses
{A character
vector
of column classes,
cf. read.table
.}
- nrow
{An integer
specifying the number of rows of the
allocated data frame.}
- ...
{Not used.}
Returns an NxK data.frame
where N equals nrow
and
K equals length(colClasses)
.
df <- dataFrame(colClasses=c(a="integer", b="double"), nrow=10)
df[,1] <- sample(1:nrow(df))
df[,2] <- rnorm(nrow(df))
print(df)
data.frame
.
manip
utilities