用VBA在Excel中熔化/重塑?

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我目前正在适应一个新的工作,在那里,我与同事分享的大部分工作都是通过MSExcel完成的。我经常使用枢轴表,因此需要“堆叠”数据,这正是melt()函数中的reshape(重塑)R包,这是我所依赖的。

有人能让我开始使用VBA宏来完成这个任务吗?还是已经存在了?

换句话说,输出与在R中简单执行这两行的输出完全相同:

require(reshape)
melt(your.unstacked.dataframe, id.vars = 1:4)

下面是一个例子:

# unstacked data
> df1
  Year Month Country  Sport No_wins No_losses High_score Total_games
2 2010     5     USA Soccer       4         3          5           9
3 2010     6     USA Soccer       5         3          4           8
4 2010     5     CAN Soccer       2         9          7          11
5 2010     6     CAN Soccer       4         8          4          13
6 2009     5     USA Soccer       8         1          4           9
7 2009     6     USA Soccer       0         0          3           2
8 2009     5     CAN Soccer       2         0          6           3
9 2009     6     CAN Soccer       3         0          8           3

# stacking the data
> require(reshape)
> melt(df1, id.vars=1:4)

  Year Month Country  Sport    variable value
1  2010     5     USA Soccer     No_wins     4
2  2010     6     USA Soccer     No_wins     5
3  2010     5     CAN Soccer     No_wins     2
4  2010     6     CAN Soccer     No_wins     4
5  2009     5     USA Soccer     No_wins     8
6  2009     6     USA Soccer     No_wins     0
7  2009     5     CAN Soccer     No_wins     2
8  2009     6     CAN Soccer     No_wins     3
9  2010     5     USA Soccer   No_losses     3
10 2010     6     USA Soccer   No_losses     3
11 2010     5     CAN Soccer   No_losses     9
12 2010     6     CAN Soccer   No_losses     8
13 2009     5     USA Soccer   No_losses     1
14 2009     6     USA Soccer   No_losses     0
15 2009     5     CAN Soccer   No_losses     0
16 2009     6     CAN Soccer   No_losses     0
17 2010     5     USA Soccer  High_score     5
18 2010     6     USA Soccer  High_score     4
19 2010     5     CAN Soccer  High_score     7
20 2010     6     CAN Soccer  High_score     4
21 2009     5     USA Soccer  High_score     4
22 2009     6     USA Soccer  High_score     3
23 2009     5     CAN Soccer  High_score     6
24 2009     6     CAN Soccer  High_score     8
25 2010     5     USA Soccer Total_games     9
26 2010     6     USA Soccer Total_games     8
27 2010     5     CAN Soccer Total_games    11
28 2010     6     CAN Soccer Total_games    13
29 2009     5     USA Soccer Total_games     9
30 2009     6     USA Soccer Total_games     2
31 2009     5     CAN Soccer Total_games     3
32 2009     6     CAN Soccer Total_games     3
提问于
用户回答回答于

下面是代码:

'Arguments
'List: The range to be normalized.
'RepeatingColsCount: The number of columns, starting with the leftmost,
'   whose headings remain the same.
'NormalizedColHeader: The column header for the rolled-up category.
'DataColHeader: The column header for the normalized data.
'NewWorkbook: Put the sheet with the data in a new workbook?
'
'NOTE: The data must be in a contiguous range and the
'rows that will be repeated must be to the left,
'with the rows to be normalized to the right.

Sub NormalizeList(List As Excel.Range, RepeatingColsCount As Long, _
    NormalizedColHeader As String, DataColHeader As String, _
    Optional NewWorkbook As Boolean = False)

Dim FirstNormalizingCol As Long, NormalizingColsCount As Long
Dim ColsToRepeat As Excel.Range, ColsToNormalize As Excel.Range
Dim NormalizedRowsCount As Long
Dim RepeatingList() As String
Dim NormalizedList() As Variant
Dim ListIndex As Long, i As Long, j As Long
Dim wbSource As Excel.Workbook, wbTarget As Excel.Workbook
Dim wsTarget As Excel.Worksheet

With List
    'If the normalized list won't fit, you must quit.
   If .Rows.Count * (.Columns.Count - RepeatingColsCount) > .Parent.Rows.Count Then
        MsgBox "The normalized list will be too many rows.", _
               vbExclamation + vbOKOnly, "Sorry"
        Exit Sub
    End If

    'You have the range to be normalized and the count of leftmost rows to be repeated.
   'This section uses those arguments to set the two ranges to parse
   'and the two corresponding arrays to fill
   FirstNormalizingCol = RepeatingColsCount + 1
    NormalizingColsCount = .Columns.Count - RepeatingColsCount
    Set ColsToRepeat = .Cells(1).Resize(.Rows.Count, RepeatingColsCount)
    Set ColsToNormalize = .Cells(1, FirstNormalizingCol).Resize(.Rows.Count, NormalizingColsCount)
    NormalizedRowsCount = ColsToNormalize.Columns.Count * .Rows.Count
    ReDim RepeatingList(1 To NormalizedRowsCount, 1 To RepeatingColsCount)
    ReDim NormalizedList(1 To NormalizedRowsCount, 1 To 2)
End With

'Fill in every i elements of the repeating array with the repeating row labels.
For i = 1 To NormalizedRowsCount Step NormalizingColsCount
    ListIndex = ListIndex + 1
    For j = 1 To RepeatingColsCount
        RepeatingList(i, j) = List.Cells(ListIndex, j).Value2
    Next j
Next i

'We stepped over most rows above, so fill in other repeating array elements.
For i = 1 To NormalizedRowsCount
    For j = 1 To RepeatingColsCount
        If RepeatingList(i, j) = "" Then
            RepeatingList(i, j) = RepeatingList(i - 1, j)
        End If
    Next j
Next i

'Fill in each element of the first dimension of the normalizing array
'with the former column header (which is now another row label) and the data.
With ColsToNormalize
    For i = 1 To .Rows.Count
        For j = 1 To .Columns.Count
            NormalizedList(((i - 1) * NormalizingColsCount) + j, 1) = .Cells(1, j)
            NormalizedList(((i - 1) * NormalizingColsCount) + j, 2) = .Cells(i, j)
        Next j
    Next i
End With

'Put the normal data in the same workbook, or a new one.
If NewWorkbook Then
    Set wbTarget = Workbooks.Add
    Set wsTarget = wbTarget.Worksheets(1)
Else
    Set wbSource = List.Parent.Parent
    With wbSource.Worksheets
        Set wsTarget = .Add(after:=.Item(.Count))
    End With
End If

With wsTarget
    'Put the data from the two arrays in the new worksheet.
   .Range("A1").Resize(NormalizedRowsCount, RepeatingColsCount) = RepeatingList
    .Cells(1, FirstNormalizingCol).Resize(NormalizedRowsCount, 2) = NormalizedList

    'At this point there will be repeated header rows, so delete all but one.
   .Range("1:" & NormalizingColsCount - 1).EntireRow.Delete

    'Add the headers for the new label column and the data column.
   .Cells(1, FirstNormalizingCol).Value = NormalizedColHeader
    .Cells(1, FirstNormalizingCol + 1).Value = DataColHeader
End With
End Sub
Sub TestIt()
NormalizeList ActiveSheet.UsedRange, 4, "Variable", "Value", False
End Sub
用户回答回答于

微软最近推出了Power Query,这是一个Excel插件,它为Excel中的数据操作添加了许多有趣的功能和功能,包括你正在寻找的功能。

外接程序中的实际函数称为“un枢轴列”,将对此进行解释。下面是它的要点:

  1. 下载并安装外接程序。
  2. 打开Excel/CSV文件
  3. 选择要融化/重塑的表/范围
  4. 在“Power Query”选项卡中,单击“From Table”,这将打开“查询编辑器”
  5. 选择要融化/重塑的列(ctrl或Shift-select,不要拖动)
  6. 在“Transform”选项卡中单击“Un透视列”(在返回到Excel之前还可以在这里应用其他转换)
  7. 在“Home”选项卡中,单击“Close&Load”。这将在Excel中创建一个新的表/查询对象,并得到所需的结果。

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