ncol_nrow: Number of rows or columns

In xiaodaigh/disk.frame: Larger-than-RAM Disk-Based Data Manipulation Framework

Number of rows or columns

Description

Number of rows or columns

Usage

nrow(df, ...)

## S3 method for class 'disk.frame'
nrow(df, ...)

ncol(df)

## S3 method for class 'disk.frame'
ncol(df)

Arguments

df	a disk.frame
...	passed to base::nrow

Examples

cars.df = as.disk.frame(cars)

# return total number of column and rows
ncol(cars.df)
nrow(cars.df)

# clean up cars.df
delete(cars.df)

xiaodaigh/disk.frame documentation built on Feb. 3, 2023, 10:04 p.m.