我的代碼需要一個多小時才能完成3500行,但我需要爲超過40000行數據工作。excel vba詞典vlookup
我正在尋找我的代碼的替代品,通過使用字典,在感興趣的上下文中提高了性能。
任何人都可以幫助我嗎?
Sub StripRow2Node()
'Read the Strip Design table
With Sheets("Design-Moment")
Sheets("Design-Moment").Activate
LastR1 = .Range("B" & Cells.Rows.Count).End(xlUp).Row
DM_arr = .Range(Cells(1, 1), Cells(LastR1, 7)) 'Col 1 to Col 7
DM_count = UBound(DM_arr, 1)
End With
'Read the x and y coordinations and thickness of a node in node design
With Sheets("Design-Shear")
Sheets("Design-Shear").Activate
LastR2 = .Range("B" & Cells.Rows.Count).End(xlUp).Row
DS_arr = .Range(Cells(1, 4), Cells(LastR2, 5)) 'Col 4 to Col 5
SX_arr = .Range(Cells(1, 26), Cells(LastR2, 27))
SY_arr = .Range(Cells(1, 30), Cells(LastR2, 31))
DS_count = UBound(DS_arr, 1)
End With
'** Find correponding reference row in Design-Moment for nodes**
'Match node to striip station and output row index
For i = 5 To DS_count
XStrip = SX_arr(i, 1)
XStation = DS_arr(i, 1)
YStrip = SY_arr(i, 1)
YStation = DS_arr(i, 2)
For j = 5 To DM_count
If DM_arr(j, 1) = XStrip Then 'X-Strip Name is matched
If DM_arr(j, 4) >= XStation And DM_arr(j - 1, 4) < XStation Then
SX_arr(i, 2) = j 'matched row reference for X-strip
End If
End If
If DM_arr(j, 1) = YStrip Then
If DM_arr(j, 5) <= YStation And DM_arr(j - 1, 5) > YStation Then
SY_arr(i, 2) = j
End If
End If
Next j
Next i
'Write the matched strip information to node
For i = 5 To LastR2
With Sheets("Design-Shear")
.Cells(i, 27) = SX_arr(i, 2)
.Cells(i, 31) = SY_arr(i, 2)
End With
Next i
末次
是否可以通過使用「Scripting Dictionary」重寫代碼來提高性能? – vincentzack
很難從您的代碼中分辨出來。如果DM_arr中的值是唯一的,那麼在字典中存儲和檢查它們的存在將減少從二次到近線性的工作量。或者,不是按順序搜索,而是通過對數組進行排序並應用二進制搜索來使用數組。 – user1016274