在 R 编程中将参数打印到屏幕上 - print()函数

R 语言中的print()函数用于将参数打印到屏幕上。

Syntax: print(x, digits, na.print)

Parameters:
x: specified argument to be displayed
digits: defines minimal number of significant digits
na.print: indicates NA values output format

示例 1：

# R program to illustrate
# print function
  
# Creating a data frame
x <- cars[1:5, ]
  
# Calling the print() function
# to print the above data frame
print(x)

输出：

speed dist
1     4    2
2     4   10
3     7    4
4     7   22
5     8   16

示例 2：

# R program to illustrate
# print function
  
# Initializing a number
x <- 15 / 7
  
# Calling the print() function
# using digits parameter
print(x, digits = 2)
print(x, digits = 3)
print(x, digits = 4)

输出：

[1] 2.1
[1] 2.14
[1] 2.143 

示例 3：

# R program to illustrate
# print function
  
# Creating a matrix
x <- matrix(c(2, NA, 5, NA, 8, NA, 22, 67, 43),
               nrow = 3, byrow = TRUE)
  
# Calling the print() function
# using na.print parameter
print(x, na.print = "")

输出：

[, 1] [, 2] [, 3]
[1, ]    2         5
[2, ]         8     
[3, ]   22   67   43