Open Compiler x<-c("what","is","truth")if("Truth"%in%x){print("Truth is found the first time")}elseif("truth"%in%x){print("truth is found the second time")}else{print("No truth found")} When the above code is compiled and executed, it produces the following result − ...
R if...else Statement We can also use an optional else statement with an if statement. The syntax of an if...else statement is: if (test_expression) { # body of if statement } else { # body of else statement } The if statement evaluates the test_expression inside the parentheses. ...
Else If Statement Switch Loops Repeat Loops While Loop For Loop Loop-control Statements Break Statement Next Statement R provides the following decision-making statements: If Statement It is one of the control statements in R programming that consists of a Boolean expression and a set of statement...
If the condition statements associated with else if block evaluated to return a TRUE boolean value, R process the code available inside the else if block. However, if the condition of else it returns a FALSE boolean value, R ignores the code and checks for next else if statement. If it f...
Introduction to R Programming What Is a Conditional Expression? Conditional Expression in R Language The if Statement in R The ifelse Statement in R Lesson Summary Frequently Asked Questions Are there if statements in R? There are two if statements in R that can be used. The if-then stateme...
detach()detach("package:babynames",unload=TRUE) 四. R 程序控制 判断语句 循环语句 (一) 判断语句: if 语句 if...else 语句 switch 语句 其中, 1. if 语句: 由一个布尔表达式后跟一个或多个语句组成。 if(boolean_expression){//布尔表达式为真将执行的语句} 举例: x<-...
In this example we use two variables, a and b, which are used as a part of the if statement to test whether b is greater than a. As a is 33, and b is 200, we know that 200 is greater than 33, and so we print to screen that "b is greater than a"....
Control Structures: if if(<condition>){ ## do something } else{ ## do something else } if(<condition1>){ ## do something }else if(<condition2>) { ## do something different }else { ## do something different } 例: if(x> 3) { ...
if语句和if-else语句的格式分别为:if(<logical statement>){..}if(<logical statement>){..}else{..}需要注意的的是,R语言不支持if-else if语句。gif 9向我们演示的是两个简单的例子。 gif 9. 下面我们要介绍的是switch语句。R语言中虽然不支持if-else if语句但是其支持一种类似于if-else if语句的语句...
int[] observed = new int[] { 20, 28, 12, 32, 22, 36 }; double p = ChiSquareTest(observed); double crit = 0.05; if (p<crit) { //Messages}else{ //Messages} The C# chi-square test accepts an array of observed values, computes the chi-square statistic valu...