Monday, August 4, 2014

EXCEL VBA根据条件在矩阵查找对应的值

Search value by row and column condition in target range (Matrix). 

这个函数根据给出的两个查询条件,在指定的区域中查找值。查找不到时,返回空字符串。

比如:

某个物品具体两种状态,这两种状态组合起来可形成第三种状态。见下表:

Title X A AS BG FN Q U Others 
X Active  Phasing out 1 Phasing out 1 Active New x Phasing out 3 x
A Phasing out 1 Phasing out 2 Phasing out 3 Phasing out 3 x x Phasing out 3 x
AS Phasing out 2 Phasing out 3 Inactive Inactive x Q Blocked Inactive x
BG Active  x Inactive Other region New Q Blocked Invalid x
FN New x x New New x x x
Q x x Q Blocked Q Blocked Q Blocked Q Blocked x x
U Phasing out 3 Phasing out 3 Inactive Invalid Invalid x invalid x
Others  x x x x x x x x

则我们可以通过此函数依据条件获得以下结果:

Status1 Status2 Status3



U A Phasing out 3
U FN Invalid
Q FN Q Blocked
U AS Inactive
U BG Invalid




原理:
根据给定的status1去在目标矩阵中,找到符合条件的行;再根据给定的status2去找到目标矩阵中符合条件的列。最后返回行和列所对应的值。

an example of how to call this function:

=LookupByMatrix(A2, B2,  $E$20:$M$28)

原码:

Public Function LookupByMatrix(para1 As String, para2 As String, Matrix As Range)

' Note: This function is case sensitive .

  Dim nCol, nRow, nFirstCol, nFirstRow As Integer

  nRow = Matrix.Rows.Count
  nCol = Matrix.Columns.Count
  
'  nFirstCol = Matrix.Cells(1, 1).Column
'  nFirstRow = Matrix.Cells(1, 1).Row
    
  With Matrix
  
        For I = 2 To nRow   ' Find value in column A5 (scan rows)
          
          If .Cells(I, 1) = para1 Then   'if found value for A5,
             
              For J = 2 To nCol       ' Find value for column L (Scan columns)
              
                If .Cells(1, J) = para2 Then
                
                     LookupByMatrix = .Cells(I, J).Value
                     
                     Exit For
                Else
                
                     LookupByMatrix = ""
                     
                End If
                
              Next J
              
              Exit For
              
          Else
          
                LookupByMatrix = ""
                
          End If
              
        Next I
  
  End With


End Function

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