VBA 数组逆

Question

我正在尝试在 Excel VBA 中从电子表格中的方形数组中获取一些值来反转此数组。我有以下代码：

Private Sub CommandButton1_Click()
Dim A As Variant
Dim i As Integer, j As Integer
ReDim A(1 To 3, 1 To 3) As Double

For i = 1 To 3
    For j = 1 To 3
        A(i, j) = Cells(i, j).Value      
    Next j
Next i

A = Application.WorksheetFunction.MInverse(A)

End Sub

行中：

A = Application.WorksheetFunction.MInverse(A)

我收到错误：

run-time error 1004: application defined or object defined error

谁能帮我解决这个问题？

Answer 1

您可能正在尝试反转病态矩阵。我在一个简单的示例中尝试了您的代码：

Sub dural()

    Dim A As Variant
    Dim i As Integer, j As Integer
    ReDim A(1 To 3, 1 To 3) As Double

    For i = 1 To 3
        For j = 1 To 3
            A(i, j) = Cells(i, j).Value
        Next j
    Next i

    A = Application.WorksheetFunction.MInverse(A)

    For i = 1 To 3
        For j = 1 To 3
            Cells(i + 5, j + 5).Value = A(i, j)
        Next j
    Next i
End Sub

并得到：

这似乎是正确的。 （两个矩阵的乘积非常接近一个单位矩阵）

Answer 2

尝试使用下面的代码从单元格 A1 中读取一个 3×3 数组，然后在单元格 A5 上写入逆数组。

Private Sub CommandButton1_Click()
    Dim A() as Variant, B() as Variant
    A = Range("A1").Resize(3,3).Value
    B = WorksheetFunctions.MMinverse(A)
    Range("A5").Resize(3,3).Value = B
End Sub

不需要遍历每个单元格，这是一个缓慢的操作。使用 Range().Resize().Value 语法通过一个命令读取和写入整个表。

VBA 数组逆

VBA array inverse

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inverse