Question

如何从VBA运行R脚本？假设我有一个R脚本存储为C：\ XXX \ testR.R

我尝试使用Shell，但不太成功。

Answer 1

Public Sub RunRTest()
  Shell ("Rscript test.r")
End Sub

Answer 2

请注意，请注意文件位置，可能需要更明确的Shell dim语句....例如。用VB中的这些行替换

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)

其中，在Excel中，具有命名引用RhomeDir的单元格包含文本

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

MyRscript包含文字C:/Documents/Rworkings/Rscripttest.s

注意到unix R反斜杠和.s或.r后缀和VB替换＆＃34;＆＃34;用＆＃34;在路径表达式中给出双括号（加上更多的外括号来表示字符串）。在文件名中包含空格也不是一个好主意。

通过搜索VBA shell找到了上面shell命令的完整dim语法。

Answer 3

我将所有内容都放在可以轻松调用的函数中。输出是shell.run输出，它是一个整数：

运行R脚本的功能：

Function Run_R_Script(sRApplicationPath As String, _
                        sRFilePath As String, _
                        Optional iStyle As Integer = 1, _
                        Optional bWaitTillComplete As Boolean = True) As Integer

    Dim sPath As String
    Dim shell As Object

    'Define shell object
    Set shell = VBA.CreateObject("WScript.Shell")

    'Wrap the R path with double quotations
    sPath = """" & sRApplicationPath & """"
    sPath = sPath & " "
    sPath = sPath & sRFilePath

    Run_R_Script = shell.Run(sPath, iStyle, bWaitTillComplete)
End Function

示例呼叫方式：

Sub Demo()
    Dim iEerrorCode As Integer
    iEerrorCode = Run_R_Script("C:\Program Files\R\R-3.4.4\bin\x64\rscript","C:\Ibos\R\WF_Metrics\Abe.R")
End Sub

OR

Sub Demo()
    Dim iEerrorCode As Integer
    Dim WS as WorkSheet

    Set WS=ThisWorkBook.Worksheets("Sheet1")
    iEerrorCode = Run_R_Script(WS.Range("A1"),WS.Range("A2")) 'cell A1=adderess of R application and cell A2 is the address of your R file, one can use a named range too
End Sub

从VBA运行R脚本

3 个答案: