R语言循环读取excel并保存为RData

之前写过一个循环读取excel的代码，最近又有了新的需求：循环读取xlsx文件中的多个sheet，处理完之后循环输出到xlsx文件中的多个sheet中，总结一下。

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1、循环读取csv文件并输出为RData格式

homedir <- "D:/Documents/tina/Database" #设置路径setwd(homedir)temp = list.files(pattern="*.csv")for (i in 1:length(temp)) {  filename <- substr(temp[i], 1, nchar(temp[i])-4);  assign(filename, read.csv(temp[i], header = T));  save(list = filename, file = paste(filename, ".Rdata", sep = ""))}

有了这段代码，要循环读取xlsx里面的多个sheet就简单多了，毕竟xlsx的文件名都是一致的，只是sheetIndex不一样：

2、循环读取xlsx文件中的多个sheet：

library(xlsx)sheet.index <- c(1:12)data.list <- list()for(i in sheet.index){  filename <- paste0("month",i)  data.list[[i]] <- read.xlsx("E:/某某中心年收入.xls", encoding = "UTF-8", sheetIndex = i)  assign(filename, data.list[[i]])}

下面这面这段代码是抄来的，还没来得及尝试能不能循环写入sheet了。

3、循环创建xlsx中的多个sheet

library(XLConnect)wb <- loadWorkbook('data.xlsx', create = TRUE) # 创建excel工作簿# 创建sheetfor (name in paste0('sheet', 1:3)) {    createSheet(wb, name)}# 分别向3个sheet写入数据writeWorksheet(wb, data_frame_1, 'sheet1')writeWorksheet(wb, data_frame_2, 'sheet2')writeWorksheet(wb, data_frame_3, 'sheet3')saveWorkbook(wb)作者：匿名用户链接：https://www.zhihu.com/question/50105110/answer/119472211来源：知乎著作权归作者所有。商业转载请联系作者获得授权，非商业转载请注明出处。

今天尝试了第3部分的代码，发现循环写入的功能无法实现，于是使用openxlsx包解决该问题。

4、创建xlsx，写入多个sheet

首先按照网上的教程安装了openxlsx，并进行了实验：

library(openxlsx) wb <- createWorkbook() addWorksheet(wb, "Sheet 1") c1 <- createComment(comment = "this is comment") writeComment(wb, 1, col = "B", row = 10, comment = c1) s1 <- createStyle(fontSize = 12, fontColour = "red", textDecoration = c("BOLD")) s2 <- createStyle(fontSize = 9, fontColour = "black") c2 <- createComment(comment = c("This Part Bold red\n\n", "This part black"), style = c(s1, s2)) c2 writeComment(wb, 1, col = 6 , row = 3, comment = c2) addWorksheet(wb, "Sheet 1") saveWorkbook(wb, file = "E:/信和资料/项目/门店绩效/湖南益阳/writeCommentExample.xlsx", overwrite = TRUE)

但在最后保存时报错，因为是在windows环境下，保存时提示安装Rtools，windows系统下安装完成后，需要添加系统变量D:\Rtools\bin;D:\Rtools\gcc-4.6.3\bin，添加完成后，重启电脑，发现保存成功。
下面，需要循环将多个sheet写入xlsx文件中：

wb <- createWorkbook()addWorksheet(wb,"xsjshouru12")addWorksheet(wb, "xsjshouru18")addWorksheet(wb, "xsjshouru24")addWorksheet(wb, "xsjshouru36")writeData(wb,"xsjshouru12",xsjshouru12)writeData(wb,"xsjshouru18",xsjshouru18)writeData(wb,"xsjshouru24",xsjshouru24)writeData(wb,"xsjshouru36",xsjshouru36)#保存到本地文件saveWorkbook(wb,file = "E:/信和资料/项目/门店绩效/湖南益阳/薪水借.xlsx", overwrite = TRUE)