getDouble <- function(num=1){ result <- num * 2 #函数主体 return(result) #返回参数用return() } myResult <- getDouble(num=20) #调用函数,myResult应为40 1. 2. 3. 4. 5. 6. 7. 8. return()和print()的区别就在与print()会在Console显示输出而return()不会。 data.frame 数据框 比...
下面是一个示例函数,可以实现这个功能:data-pid="wYWDWe66">```RremoveBrackets <- function(data,...
一、自定义函数 R函数定义的基本语法: myfun = function(arg_1, arg_2, ...) {myfun:函数名称 arg_1:参数是一个占位符,调用函数时,将值传递给参数 Function body:函数体,包含一组语句,用于定义函数的作用,或者实现某种功能 return:评估/计算的函数体中的最后一个表达式 ## ## 示例1 无参函数 ## ## ...
在函数中,可以使用return语句将值返回调用函数的代码行。一个返回0,一个返回'[object Object]',互换...
1.1 data.frame函数 函数功能: The function data.frame() creates data frames, tightly coupled collections of variables which share many of the properties of matrices and of lists, used as the fundamental data structure by most of R's modeling software. 1. 2. 3. 函数data.frame()创建数据框,...
Max=max(x,na.rm=TRUE);Mean=mean(x,na.rm=TRUE);Var=var(x,na.rm=TRUE);Sd=sd(x,na.rm=TRUE);Range=abs(diff(range(x)));#返回结果return(data.frame(N=N,Min=Min,Q1=Q1,Median=Median,Q3=Q3,Max=Max,Mean=Mean,Var=Var,Sd=Sd,Range=Range))}#可对data数据集批量使用sapply(data,my_...
The get function can also be used to call a column from a data frame. Let’s first create some example data: data<-data.frame(var1=c(5,5,5,5,5),# Create example data.framevar2=c(4,2,2,1,8)) In order to use the get function for the variables of this data frame, we first...
[-10]x <-function(varibale){formula <-as.formula(paste0("class~",varibale))model <- glm(formula,family = binomial,data = df)glm <- summary(model)pvalue<-glm$coefficients[,4]unidata <- data.frame('ID'=varibale,'pvalue'= p...
As a final note: In this tutorial we have returned a single value from our user-defined function. However, it would also be possible to use a similar R syntax to return other types of data objects such as a data frame, a tibble, a ggplot2 plot object, and so on…...
R中使用function函数来自编函数,为了尽可能返回丰富的信息,返回值经常是一个列表,用于存储一系列对象。语法如下: myfunction <- function(arg1, arg2, ...){ statement object <- list(value1=value1, value2=value2, ...) # 这句是不一定需要的 return(object) # 如果没有return()则最后一行代码的返回...