matrix() Function
The matrix() function creates a matrix from a single vector. It allows you to specify how many rows and columns the matrix should have, and whether it should be filled by rows or by columns.
Function Overview
matrix(data = NA, nrow = 1, ncol = 1, byrow = F)
data: the vector used to fill the matrix;nrow: number of rows;ncol: number of columns;byrow: ifTRUE, the matrix is filled row by row; ifFALSE- column by column.
The length of the vector must be divisible by either nrow or ncol. If both are specified, then nrow * ncol must equal the vector length.
Example
12345678# Vector of integers num <- 1:9 # Fill by columns (default) matrix(num, nrow = 3, ncol = 3) # Fill by rows matrix(num, nrow = 3, ncol = 3, byrow = T)
The first matrix is filled column by column (default configuration), while the second one is filled row by row.
The seq() function can generate ranges similarly to a colon (:):
seq(a, b)generates integers fromatob;seq(a, b, c)generates integers fromatobwith step sizec.
Swipe to start coding
You have a vector of numbers named num:
2 4 6 8 10 12 14 16
Based on this vector, you need to build the following matrix:
2 4 6 8
10 12 14 16
Use the matrix() function to do this.
Рішення
Дякуємо за ваш відгук!
single
Запитати АІ
Запитати АІ
Запитайте про що завгодно або спробуйте одне із запропонованих запитань, щоб почати наш чат
Чудово!
Completion показник покращився до 2.27matrix() Function
Свайпніть щоб показати меню
The matrix() function creates a matrix from a single vector. It allows you to specify how many rows and columns the matrix should have, and whether it should be filled by rows or by columns.
Function Overview
matrix(data = NA, nrow = 1, ncol = 1, byrow = F)
data: the vector used to fill the matrix;nrow: number of rows;ncol: number of columns;byrow: ifTRUE, the matrix is filled row by row; ifFALSE- column by column.
The length of the vector must be divisible by either nrow or ncol. If both are specified, then nrow * ncol must equal the vector length.
Example
12345678# Vector of integers num <- 1:9 # Fill by columns (default) matrix(num, nrow = 3, ncol = 3) # Fill by rows matrix(num, nrow = 3, ncol = 3, byrow = T)
The first matrix is filled column by column (default configuration), while the second one is filled row by row.
The seq() function can generate ranges similarly to a colon (:):
seq(a, b)generates integers fromatob;seq(a, b, c)generates integers fromatobwith step sizec.
Swipe to start coding
You have a vector of numbers named num:
2 4 6 8 10 12 14 16
Based on this vector, you need to build the following matrix:
2 4 6 8
10 12 14 16
Use the matrix() function to do this.
Рішення
Перейдіть на комп'ютер для реальної практикиПродовжуйте з того місця, де ви зупинились, використовуючи один з наведених нижче варіантівДякуємо за ваш відгук!
single
