Read multiple xlsx files with multiple sheets into one R data frame

Question

I have been reading up on how to read and combine multiple xlsx files into one R data frame and have come across some very good suggestions like, How to read multiple xlsx f

Answer 1

I would use a nested loop like this to go through each sheet of each file. It might not be the fastest solution but it is the simplest.

require(xlsx)    
file.list <- list.files(recursive=T,pattern='*.xlsx')  #get files list from folder

for (i in 1:length(files.list)){                                           
  wb <- loadWorkbook(files.list[i])           #select a file & load workbook
  sheet <- getSheets(wb)                      #get sheet list

  for (j in 1:length(sheet)){ 
    tmp<-read.xlsx(files.list[i], sheetIndex=j, colIndex= c(1:6,8:10,12:17,19),
                   sheetName=NULL, startRow=4, endRow=NULL,
                   as.data.frame=TRUE, header=F)   
    if (i==1&j==1) dataset<-tmp else dataset<-rbind(dataset,tmp)   #happend to previous

  }
}

You can clean NA values after the loading phase.