Merge and append
both <- merge( myleft, myright, by=c("id","workshop") )
with different names:
both <- merge( myleft,myright, by.x=c("id", "workshop"), by.y=c("subject","shortCourse") )
both <- rbind(data1, data2)
Unmatched cols
library(tidyr) xxx
library(foreign) mydata <- read.dta("filename")
Export via Excel
library(readxl) data <- read_excel("", sheet = "sheetname", col_names = TRUE, skip = 0)
Export
library(xlsx) write.xlsx(mydata100, file = "test", sheetName = "sheet")
Delimeted
library(readr)
CSV
library(readr)
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