Running R scripts from VBA

Question

How can I run a R script from VBA? Say I have a R script stored as C:\XXX\testR.R

I tried using Shell, but not quite successful.

Answer 1

Note be careful with your file locations and may need more explicit Shell dim statements....e.g. replace with these lines in your VB

Dim shell As Object   
Set shell = VBA.CreateObject("WScript.Shell")   
Dim waitTillComplete As Boolean: waitTillComplete = True   
Dim style As Integer: style = 1   
Dim errorCode As Integer   
Dim  path As String

path = """" & Cells.Range("RhomeDir") & """ """ & Cells.Range("MyRscript") & """"

errorCode = shell.Run(path, style, waitTillComplete)

where, in Excel a cell with a named reference RhomeDir contains text

C:\Program Files\R\R-3.2.3\bin\x64\rscript and

MyRscript contains text C:/Documents/Rworkings/Rscripttest.s

noting the unix R backslash and .s or .r postfix and VB replaces "" with " to give double brackets in path expression (plus further outside brackets to denote string). Also not a good idea to have spaces in your file name.

The full dim syntax of the shell command above was found by searching for VBA shell.