Question

通过Excel VBA创建关联矩阵的最佳方法是什么？我的数据有45列（可能最终会改变）和12000行（也可能会改变）。我只是在工作表上使用correl函数，但就像我说的，我的列和行可能会随着时间的推移而改变。

任何帮助将不胜感激！

Answer 1

我在网上搜索了VBA关联矩阵码，但没有发现任何实质内容。做了一些自己的编码，它不是很漂亮，但它确实起了作用。此代码将在最后一个数据系列的右侧创建一个矩阵。

Sub CorrelationMatrix()

Dim y As Range
Dim z As Range

funds = Application.Workbooks("VBAcorrelation").Worksheets("Sheet1").Cells(1,       Columns.Count).End(xlToLeft).Column
rader = 0
For x = 1 To funds
        nyrad = Cells(Rows.Count, x).End(xlUp).Row
        If nyrad > rader Then
        rader = Cells(Rows.Count, x).End(xlUp).Row
    End If
Next x



p = 1
u = 2

For h = 1 To funds
For u = 1 To funds

        Set y = ActiveSheet.Range(Cells(2, h), Cells(rader, h))
        Set z = ActiveSheet.Range(Cells(2, u), Cells(rader, u))

  Correl = WorksheetFunction.Correl(y, z)

 Worksheets("Sheet1").Cells(h + 1, funds + u + 3).Select
 ActiveCell = Correl

 Next u
 Next h

MsgBox "Done with Matrix"
End Sub

Answer 2

 Application.Run "ATPVBAEN.XLAM!Mcorrel", ActiveSheet.Range("$C$3:$F$6"), _
    ActiveSheet.Range("$C$10"), "K", False //"K" might be "C"=column

要运行它，您必须首先启用Data Analysis Toolpak（包）。您可以通过UI，选项卡数据分析 - >相关矩阵

来使用它

这里：

"$C$3:$F$6" - input (square matrix)
$C$10 - output cell
"K" (or "C") - group by columns
false - labels=no

Answer 3

这对函数为您提供矩阵形式的结果（选择应该出现的范围，引入公式，然后按F2，然后按Ctrl + Shift + Enter来查看值）。复制两者并粘贴到VBA编辑器上。

'function to create a correlation matrix given the data
Function CorrMatriz(Mat_data As Variant)
Dim i As Integer, j As Integer, corr As Variant, M1 As Variant, M2 As Variant
ReDim corr(1 To Mat_data.Columns.Count, 1 To Mat_data.Columns.Count)

ReDim M1(1 To Mat_data.Rows.Count, 1 To 1)
ReDim M2(1 To Mat_data.Rows.Count, 1 To 1)

For i = 1 To Mat_data.Columns.Count
    M1 = ExtraeMatriz(Mat_data, i)
    For j = 1 To Mat_data.Columns.Count
        M2 = ExtraeMatriz(Mat_data, j)
        corr(i, j) = Application.Correl(M1, M2)
    Next j
Next i
CorrMatriz = corr
End Function`

' function to extract one column
enter code here
Function ExtraeMatriz(Matriz As Variant, columna As Integer)
Dim i As Integer, data_final As Variant
ReDim data_final(1 To Matriz.Rows.Count, 1)
For i = 1 To Matriz.Rows.Count
    data_final(i, 1) = Matriz(i, columna)
Next i
ExtraeMatriz = data_final
End Function

Answer 4

工作正常：

Option base 1  
      Function MCorrelation(rango As Range) As Variant
        Dim x As Variant, y As Variant, s As Integer, t As Integer, c() As Variant
        ReDim c(rango.Columns.Count, rango.Columns.Count)
        For i = 1 To rango.Columns.Count Step 1
         For j = 1 To i Step 1
        c(i, j) = Application.Correl(Application.Index(rango, , i), Application.Index(rango, , j))
         Next j
        Next i
         MCorrelation = c
        End Function

通过Excel VBA创建关联矩阵

4 个答案: