Save Excel spreadsheet as .csv with R?

Question

What is the simplest way to convert a large Excel spreadsheet with multiple worksheets into .CSV files in R?

Note that I\'ve tested XLConnect and XLSX and found that m

Answer 1

Here's a loop to write out all sheets:

require(gdata)
## install support for xlsx files
installXLSXsupport()
excelFile <- ("/full/path/to/excelFile.xlsx")
## note that the perl scripts that gdata uses do not cope well will tilde expansion
## on *nix machines. So use the full path. 
numSheets <- sheetCount(excelFile, verbose=TRUE)

for ( i in 1:numSheets) {
  mySheet <- read.xls(excelFile, sheet=i)
  write.csv(mySheet, file=paste(i, "csv", sep="."), row.names=FALSE)
}