文件名作为 R 数据框中的合法列

Question

我正在将文件夹中所有 XLS 文件中的一个 sheet 合并到一个数据框中，并显示所有这些文件的特定范围，效果很好。但是，我想将文件名添加为实际的列，这现在不起作用 - 它显示为行而不添加列。

截图可能会帮助我理解更多。您可以看到第二列有 headers 但第一列没有，所以如果我添加导出到 Excel 等的功能，那一列将会丢失。

代码：

#library
library(readxl)
library(plyr)

#define path
# setwd
my_path <- file.path("C:", "File", "Path")
setwd(my_path)

# list all files in the directory
data.files = list.files()

# list all files in the directory ending with .xls
wb <- list.files(pattern = "*.xls")

# create an empty list
dflist <- list()

# populate dflist with wb
for (i in wb){
  dflist[[i]] = data.frame(read_excel(i, sheet = "Sheet1", range = "C15:D16", col_names = FALSE, row.names(data.files)))
}

#create final data frame, bind dflist
OBJDList = do.call(what = rbind, args = dflist)

Answer 1

我让它工作了。文件名是第一列，我将范围缩小到一个单元格，因为我需要的所有其他内容都在文件名本身中。

#library
library(readxl)
library(plyr)
library(xlsx)
library(data.table)

#define path
my_path <- file.path("G:", "your", "path")
setwd(my_path)

# list all files in the directory
data.files = list.files()

# list all files in the directory ending with .xls
wb <- list.files(pattern = "*.xls")

# create an empty list
dflist <- list()

# populate dflist with wb
for (i in wb){
  dflist[[i]] = data.frame(read_excel(i, sheet = "sheet1", range = "D16", col_names = FALSE, row.names(data.files)))
}



#create final data frame, bind dflist
OBJDList = do.call(what = rbind, args = dflist)

setDT(OBJDList, keep.rownames = TRUE)[]

OBJDList

print(OBJDList)

write.xlsx(OBJDList, file = "G:/your path/yourfile.xlsx",
           sheetName = "Sheet1", append = FALSE)

文件名作为 R 数据框中的合法列

File name as legitimate column in R data frame

r

readxl