Example 3: Return Multiple Values as ListFor illustration, I will show you a slightly more complex example for the usage of return in R. Consider the following function:my_fun3 <- function(x, y) { # Return mult
(1, 2, 3) : # longer object length is not a multiple of shorter object length # 长的对象长度不是短的对象长度的整倍数 # 向量函数 # 1.数学函数 x1<-c(4,9) sqrt(x1) # [1] 2 3 # 2.排序函数 x1<-c(3,2,5,1,4) sort(x1) # [1] 1 2 3 4 5 rev(sort(x1)) # [1] 5...
library(shiny) library(ggplot2) ui <- fluidPage( navbarPage("User Interface:",tabPanel("Upload", titlePanel("Uploading Files"), sidebarLayout( sidebarPanel( fileInput("file1", "Choose CSV File", multiple = TRUE, accept = c("text/csv", "text/comma-separated-values,text/plain", ".csv...
temp<-sample(n,datasize)#把n打乱 x<-1:k dataseq<-1:datasize cvlist<-lapply(x,function(x)dataseq[temp==x])#dataseq中随机生成10个随机有序数据列return(cvlist)} 代码解读:rep这里有点费解,举例k=5,鸢尾花iris数据集有150个样本(datasize=150)的情况下,则为rep(1:5,30)[1:150],比如:1,2,...
R中的apply函数与function函数 r语言apply函数用法 R语言 apply函数家族详解 1、apply {base} 通过对数组或者矩阵的一个维度使用函数生成值得列表或者数组、向量。 apply(X, MARGIN, FUN, …) X 1. 2. MARGIN 表示矩阵行,2表示矩阵列,也可以是c(1,2)...
# f <- function(x) nj(dist.dna(x, model = "raw")) # tr <- f(ex.dna.sub) # ### Are bootstrap values stable? # for (i in 1:5) # print(boot.phylo(tr, ex.dna.sub, f, quiet = TRUE)) # ### How many partitions in 100 random trees of 10 labels?... # TR <- rmtr...
函数by {base}:Apply a Function to a Data Frame Split by Factors,应用格式为by(data, INDICES, FUN, ..., simplify = TRUE),具体解释可通过命令help("by")查询,该函数可以按照INDICES将要分析的data数据分割成几个数据框,然后对每个数据框应用FUN函数的功能。
Returns a new PubSub instance using given predicate pred as boolean topic function and a & b as subscribers for truthy (a) and falsy b values.import { bisect, fromIterable, trace } from "@thi.ng/rstream"; fromIterable([1, 2, 3, 4]).subscribe( bisect((x) => !!(x & 1), trace...
function(x, table) match(x, table, nomatch =0) >0 例如,返回左侧向量的元素匹配右侧向量的逻辑值: >1:10%in% c(1,3,5,9) [1] TRUE FALSE TRUE FALSE TRUE FALSE FALSE FALSE TRUE FALSE 三,cut函数 cut()函数用于切割x的范围,每一个范围是一个分区;cut()函数根据分区的顺序对x中的值进行编码,...
If provided, this string specifies the name of the i-th objective function. Note that when multiple objectives are present, the result$objval named component that is returned in the result of an optimization call will be a vector of the same length as model$multiobj. A multi-objective ...