dim.hdd | R Documentation |
Gets the dimension of a hard drive data set (HDD).
## S3 method for class 'hdd'
dim(x)
x |
A |
It returns a vector of length 2 containing the number of rows and the number of columns of the HDD object.
Laurent Berge
# Toy example with iris data
iris_path = tempfile()
fwrite(iris, iris_path)
# destination path
hdd_path = tempfile()
# reading the text file with 50 rows chunks:
txt2hdd(iris_path, dirDest = hdd_path, rowsPerChunk = 50)
# creating a HDD object
base_hdd = hdd(hdd_path)
# Summary information on the whole data set
summary(base_hdd)
# Looking at it like a regular data.frame
print(base_hdd)
dim(base_hdd)
names(base_hdd)
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