Few steps to connect R with Excel: XLConnect!

Create a new empty xlsx file trough R

We want to create a new empty .xlsx file with one empty sheet named ‘Input'; the syntax is

fileXls 
Command loadWorkbook creates an R workbook object.
Command saveWorkbook save the R object in a xlsx file.
The result is represented in next figure:
Create an Excel empty sheet trough R using XLConnect


Populate an empty xlsx sheet with R

We want to add something to the empty sheet input

input 
The input data.frame, with 2 rows and 2 column, is created and the command writeWorksheet writes the content of this data.frame in the input sheet starting from the cell (1,2).

Write inside an Excel sheet with R using XLConnect

Add other sheets to the workbook

At this point a second sheet could be created

require(reshape)
createSheet(exc,'Airquality')
airquality$isCurrent
Command createName create a named region ‘Airquality' starting from the cell $A$1 of sheet Airquality. Command writeNamedRegion writes airquality data.frame with headers in the named region ‘Airquality'.