在 R 编程中将对象转换为数据帧 - as.data.frame()函数

R 编程语言中的as.data.frame()函数用于将对象转换为数据框。这些对象可以是向量、列表、矩阵和因子。

Syntax: as.data.frame(object)

Parameters: 

• object: Vector, Matrix, factor, or data frame

R – as.data.frame()函数示例

示例 1：R 中 as.data.frame()函数的基本示例

R

# R program to convert object to data frame
 
# Creating Vectors
x1 <- c(1, 2, 3, 4)
x2 <- c("a", "B", "C", "D")
x3 <- c("hello", "Geeks", "for", "geeks")
 
# Creating list of vectors
x <- list(col1 = x1, col2 = x2, col2 = x3)
x
 
# Converting list to data frame
as.data.frame(x)

输出：

$col1
[1] 1 2 3 4

$col2
[1] "a" "B" "C" "D"

$col2
[1] "hello" "Geeks" "for"   "geeks"

  col1 col2 col2.1
1    1    a  hello
2    2    B  Geeks
3    3    C    for
4    4    D  geeks

示例 2：

R

# R program to convert object to list
 
# Converting pre-defined dataset to list
x < - as.list(BOD)
x
 
# Converting list to data frame
as.data.frame(x)

输出：

$Time
[1] 1 2 3 4 5 7

$demand
[1]  8.3 10.3 19.0 16.0 15.6 19.8

attr(, "reference")
[1] "A1.4, p. 270"
  Time demand
1    1    8.3
2    2   10.3
3    3   19.0
4    4   16.0
5    5   15.6
6    7   19.8