Backward stepwise selection using the AIC in Cox proportional hazards regression modeling identified 6 variables that were the most associated with survival: age, tumor size, multiple lesions, nodal status, vas
多元线性回归 multiple linear regression ##例1:new.eg1 rm(list=ls()) setwd("/Users/sifan/R/datasets") dat <- read.csv("new.eg1.csv",header=T) dat ## x1 x2 x3 x4 y ## 1 5.68 1.90 4.53 8.2 11.2 ## 2 3.79 1.64 7.32 6.9 8.8 ## 3 6.02 3.56 6.95 10.8 12.3 ## 4 4.85 1.0...
profile_text<-read.table(text=profile,header=T,row.names=1,quote="",sep=";")# tab键分割,每列不加引号 write.table(profile_text,file="line_data.xls",sep="\t",row.names=T,col.names=T,quote=F)# 如果看着第一行少了ID列不爽,可以填补下system("sed -i '1 s/^/ID\t/' line_data....
(1,2,3) # Warning message: # In c(1, 2) + c(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(...
https://stackoverflow.com/questions/7519790/assign-multiple-new-variables-on-lhs-in-a-single-line-in-r https://stackoverflow.com/questions/1826519/how-to-assign-from-a-function-which-returns-more-than-one-value Installation You can install the development version of zeallot fromGitHubwith: ...
Example 1: Single Venn Diagram in RExample 1 shows how to draw a single venn diagram, i.e. only one circle. Have a look at the following R code:grid.newpage() # Move to new plotting page draw.single.venn(area = 10) # Create single venn diagram...
A while loop is one of the control statements in R programming which executes a set of statements in a loop until the condition (the Boolean expression) evaluates to TRUE. The basic syntax of a while loop is given below while (Boolean_expression) { statement } For example: v <-9 while...
## Only one of the following two lines should be used## If running in Machine Learning Studio (classic), use the first line with maml.mapInputPort()## If in RStudio, use the second line with read.csv()cadairydata <- maml.mapInputPort(1)# cadairydata <- read.csv("cadairydata....
To check whether a package is pre-built on windows, you could go to CRAN and search your package, download one binary file according to your OS, and check Built: part in the DESCRIPTION file. Following is an example: This sample shows how to install Zoo: R Copy # R version: 3.5....
A type 1 SOS constraint is a set of variables where at most one variable in the set may take a value other than zero. A type 2 SOS constraint is an ordered set of variables where at most two variables in the set may take non-zero values. If two take non-zeros values, they must ...