随机抽样是为了保证各比较组之间均衡性的一个很重要的方法。那么今天介绍的第一个函数就是用于抽样的函数sample:> x=1:10 > sample(x=x) [1] 3 5 9 6 10 7 2 1 8 4第一行代码表示给x向量赋值1~10,第二行代码表示对x向量进行随机抽样。结果输出为每次...
Ideally, unit tests should serve as sample function calls (for shared library routines). 函数文档 Functions should contain a comments section immediately below the function definition line. These comments should consist of a one-sentence description of the function; a list of the function's argument...
5.3 柱形图file <- read.table("barData.csv",header=T,row.names=1,sep=",",stringsAsFactors = F)dataxx <- as.matrix(file) #转化为矩阵cols <- terrain.colors(3) #抽取颜色#误差线函数plot.error <- function(x, y, sd, len = 1, col = "black") { len <- len * 0.05 arrows(x0 =...
sample(x = die, size = 1) ## 2 sample(x = die, size = 1) ## 1 sample(x = die, size = 1) ## 6 Many R functions take multiple arguments that help them do their job. You can give a function as many arguments as you like as long as you separate each argument with a comma...
ChatGPT检索将脚本转换为函数将roxygen添加到Function（记录一个函数）建议进行单元测试文档数据提出改进建议 要运行插件，突出显示其代码，然后从RStudio Addins下拉菜单中选择该插件，或者在命令调色板中搜索它(在RStudio Addins菜单中使用Tools >显示命令调色板，在Windows上使用Ctrl-Shift-P，在Mac上使用Cmd-Shift-P...
雪晴数据 R语言基础入门之一:引言 R语言在生态学研究中的应用分析 为什么生态学家要学习Python或者R? Statistical tools for high-throughput data analysis why-use-the-r-language Why R? The pros and cons of the R language Why use R? Five reasons...
(p,"--input_path",help="input: a directory containing the counts matrix named with '<sample>.count'",type="character",default="./")p<-add_argument(p,"--pattern",help="limit pattern of input files using regular expression in R language",type="character",default="*count$")p<-add_...
Sample in R language a = 100 v3=runif(100) ggplot(data.frame(v3), aes(x = v3))+geom_density() a=100 a=1000 a=10000 a=100000 越多的采样点得到的分布越接近均匀分布,其他分布采样也是一样
fold_num=10kv_num=c(5,10*c(1:5,10))seed_num=2003smp<-function(cross=fold_num,n,seed){set.seed(seed)dd=list()aa0=sample(rep(1:cross,ceiling(n/cross))[1:n],n)for(iin1:cross)dd[[i]]=(1:n)[aa0==i]return(dd)}selectK<-function(dtm,kv=kv_num,SEED=seed_num,cross=fold...
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