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

我尝试使用 Shell,但不太成功。

4

3 回答 3

22
Public Sub RunRTest()
  Shell ("Rscript test.r")
End Sub
于 2012-07-22T07:55:23.113 回答
12

请注意您的文件位置,可能需要更明确的 Shell dim 语句....例如,在您的 VB 中替换为这些行

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,具有命名引用的单元格RhomeDir包含文本

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

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

注意 unix R 反斜杠和 .s 或 .r 后缀和 VB 用 " 替换 "" 以在路径表达式中给出双括号(加上更远的括号以表示字符串)。在文件名中包含空格也不是一个好主意。

通过搜索 VBA shell 可以找到上面 shell 命令的完整暗淡语法。

于 2016-01-26T12:15:08.220 回答
3

我把所有东西都放在一个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 脚本的函数:

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

如何调用示例:

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

或者

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
于 2019-02-21T21:59:55.783 回答