码农教程 - 一技在手,衣食无忧!
Home
HTML/CSS
HTML
CSS
W3.CSS
Bootstrap
SASS
Bootstrap4
Bootstrap5
JavaScript
JavaScript
React
jQuery
Nodejs
VUE
TypeScript
Angular
Server
JAVA
PHP
C
C++
GO
Django
DB
SQL
MYSQL
PostgreSql
MongoDb
Data Analysis
Python
R
Mobile
Kotlin
XML
XML
ASP.NET
C#
ASP
Dev Tools
GIT
Website
How To
AWS
Cybersecurity
AI
AI
Gen AI
Data Science
目录
R Tutorial
R HOME
R Intro
R Get Started
R Syntax
R Syntax
Print
R Comments
R Variables
R Variables
Concatenate Elements
Multiple Variables
Variable Names
R Data Types
R Numbers
R Math
R Strings
R Strings
Escape Characters
R Booleans
R Operators
R If...Else
R If...Else
Nested If
And Or
R While Loop
R For Loop
R For Loop
Nested Loop
R Functions
R Functions
Nested Functions
Recursion
Global Variables
R Data Structures
R Vectors
R Lists
R Matrices
R Arrays
R Data Frames
R Factors
R Graphics
R Plot
R Line
R Scatterplot
R Pie Charts
R Bars
R Statistics
R Statistics Intro
R Data Set
R Max and Min
R Mean Median Mode
R Mean Median Mode
R Median
R Mode
R Percentiles
R Examples
R Examples
R Compiler
R Exercises
R Quiz
R
Examples
❮ Previous
Next ❯
R Syntax
Output some text
Output numbers
Do a simple calculation
Output some text with the print() function
Syntax Explained
R Comments
Single-line comment before a line of code
Single-line comment at the end of a line of code
Multi-line comment
Comments Explained
R Variables
Creating two variables
Combine both text and a variable
Add a variable to another variable
Display the sum of two variables by using the + operator
Assign the same value to multiple variables in one line
Variables Explained
R Data Types
Changing the type of a variable after it has been set
Using the class() function to check the data type of different variables
Data Types Explained
R Numbers
Creating a numeric data type
Creating an integer
Creating a complex number
Converting from one type to another
Numbers Explained
R Math
Add numbers
Subtract numbers
Find the lowest or highest number in a set
Find the square root of a number
Return the absolute (positive) value of a number
Round a number upwards and downwards to its nearest integer
Math Explained
R Strings
Creating a string literal
Assigning a string to a variable
Find the number of characters in a string
Check a string for a character or a sequence of characters
Combine/concatenate two strings
Using an escape character to output a word in a string
Strings Explained
R Booleans
Compare different values
Compare variables
Booleans Explained
R Operators
Addition operator
Subtraction operator
Multiplication operator
Division operator
Exponent operator
Modulus operator
Integer Division operator
Equal operator
Not equal operator
Greater than operator
Less than operator
Greater than or equal to operator
Less than or equal to operator
Operators Explained
R If...Else
If statement
Else if statement
If else statement
Nested if statements
The AND operator (&)
The OR operator (&)
If...Else Explained
R While Loop
While loop
While loop with a break
While loop with the next statement
If..else combined with a while loop
While Loop Explained
R For Loop
Using a for loop to iterate over a sequence
Using a for loop to print every item in a list
Using a for loop to print the number of dices
If..else combined with a for loop
A nested for loop
For Loop Explained
R Functions
Call a function
Function arguments
Default parameter value
Let a function return a value
Nested function
Recursion
Functions Explained
R Global Variables
Create a variable outside of a function and use it inside the function
Create a variable inside of a function with the same name as the global variable
Create a global variable inside a function
Global Variables Explained
R Vectors
Create a vector of strings
Create a vector of numbers
Create a vector with numerical values in a sequence
Find the length of a vector
Sort a vector
Access a vector
Change a vector item
Vectors Explained
R Lists
Create a list
Access lists
Change item value
List length
Lists Explained
R Matrices
Create a matrix
Access matrix items
Matrix length
Matrices Explained
R Arrays
Create arrays
Access matrix items
Array length
Arrays Explained
R Data Frames
Create a data frame
Access data frame items
Data Frames length
Data Frames Explained
R Factors
Create a factor
Access factors
Factor length
Factors Explained
❮ Previous
Next ❯
纠错反馈
截取页面反馈部分,让我们更快修复内容!也可以直接跳过填写反馈内容!
标注
直接在页面拖动鼠标来标注反馈区域!
下一步
反馈内容
联系方式(邮箱)
返回
提交