I am receiving a large file 500k+ lines but all the content is in column A. I need to run a macro that will transpose the data into matrix form but will only create a new row when it finds
"KEY*" in the ActiveCell. For example:
| KEY 4759839 | asljhk | 35049 | | sklahksdjf| | KEY 359 | skj | 487 |y| 2985789 |
The above data in my file would originally look like this in column A:
KEY 4759839 asljhk 35049 sklahksdjf KEY 359 skj 487 y 2985789
- Blank cells need to be transposed as well, so the macro cant stop based on emptyCell
- The number of cells between KEY’s is not constant so it actually needs to read the cell to know if it should create a new row
- It can either stop based on say 20 empty cells in a row or prompt for a max row number
- (Optional) It would be nice if there was some sort of visual indicator for the last item in a row so that its possible to tell if the last item(s) were blank cells
I searched around and found a macro that had the same general theme but it went based on every 6 lines and I did not know enough to try to modify it for my case. But in case it helps here it is:
Sub kTest() Dim a, w(), i As Long, j As Long, c As Integer a = Range([a1], [a500000].End(xlUp)) ReDim w(1 To UBound(a, 1), 1 To 6) j = 1 For i = 1 To UBound(a, 1) c = 1 + (i - 1) Mod 6: w(j, c) = a(i, 1) If c = 6 Then j = j + 1 Next i [c1].Resize(j, 6) = w End Sub
I would greatly appreciate any help you can give me!
Tested and works:
Sub test() Row = 0 col = 1 'Find the last not empty cell by selecting the bottom cell and moving up Max = Range("A650000").End(xlUp).Row 'Or whatever the last allowed row number is 'loop through the data For i = 1 To Max 'Check if the left 3 characters of the cell are "KEY" and start a new row if they are If (Left(Range("A" & i).Value, 3) = "KEY") Then Row = Row + 1 col = 1 End If Cells(Row, col).Value = Range("A" & i).Value If (i > Row) Then Range("A" & i).Value = "" End If col = col + 1 Next i End Sub
This works with the sample data you provided in your question – it outputs the result in a table starting in B1. It runs in less than one second for 500k rows on my machine.
Sub kTest() Dim originalData As Variant Dim result As Variant Dim i As Long Dim j As Long Dim k As Long Dim countKeys As Long Dim countColumns As Long Dim maxColumns As Long originalData = Range([a1], [a500000].End(xlUp)) countKeys = 0 maxColumns = 0 'Calculate the number of lines and columns that will be required For i = LBound(originalData, 1) To UBound(originalData, 1) If Left(originalData(i, 1), 3) = "KEY" Then countKeys = countKeys + 1 maxColumns = IIf(countColumns > maxColumns, countColumns, maxColumns) countColumns = 1 Else countColumns = countColumns + 1 End If Next i 'Create the resulting array ReDim result(1 To countKeys, 1 To maxColumns) As Variant j = 0 k = 1 For i = LBound(originalData, 1) To UBound(originalData, 1) If Left(originalData(i, 1), 3) = "KEY" Then j = j + 1 k = 1 Else k = k + 1 End If result(j, k) = originalData(i, 1) Next i With ActiveSheet .Cells(1, 2).Resize(UBound(result, 1), UBound(result, 2)) = result End With End Sub