VBA excel macro to parse blocks of data in excel - vba

Question

I'm brand new to VBA for excel (like a few hours ago new) and not really a programmer, so bear with me.
I have an excel data set, all in one column (column A) that is structured like this:
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
That is, the data blocks are separated by blank rows, but not at regular intervals. I'm trying to write a macro that will go through the file and Group (the specific excel command) these blocks of data together. So far I have this:
Set firstCell = Worksheets("627").Range("A1")
Set currentCell = Worksheets("627").Range("A1")
Do While Not IsEmpty(firstCell)
Set firstCell = currentCell
Do While Not IsEmpty(currentCell)
Set nextCell = currentCell.Offset(1, 0)
If IsEmpty(nextCell) Then
Range("firstCell:currentCell").Select
Selection.Rows.Group
Set firstCell = nextCell.Offset(1, 0)
Else
Set currentCell = nextCell
End If
Loop
Loop
I'm sort of stuck, having particular trouble with the logic of moving to the next block of data and initiating.
Any help would be appreciated!

Answer 1

How about something like this:
Option Explicit
Public Sub tmpTest()
Dim i As Long
Dim lngLastRow As Long
With ThisWorkbook.Worksheets(1)
lngLastRow = .Cells(.Rows.Count, "A").End(xlUp).Row
For i = lngLastRow To 1 Step -1
If .Cells(i, 1).Value2 = vbNullString Then
.Range(.Cells(i + 1, 1), .Cells(lngLastRow, 1)).EntireRow.Group
lngLastRow = i - 1
End If
Next i
.Range(.Cells(1, 1), .Cells(lngLastRow, 1)).EntireRow.Group
End With
End Sub

Answer 2

Here ya are. You just need to pull addresses in your range instead of trying to refer to the object. You also need to reset both current and first cell in your if statement.
Sub test()
Set firstCell = Worksheets("test2").Range("A1")
Set currentcell = Worksheets("test2").Range("A1")
Do While Not IsEmpty(firstCell)
Set firstCell = currentcell
Do While Not IsEmpty(currentcell)
Set nextcell = currentcell.Offset(1, 0)
If IsEmpty(nextcell) Then
Range(firstCell.Address, currentcell.Address).Select
Selection.Rows.group
Set currentcell = nextcell.Offset(1, 0)
Set firstCell = nextcell.Offset(1, 0)
Else
Set currentcell = nextcell
End If
Loop
Loop
End Sub

Answer 3

First of all, your code goes wrong when it says
Range("firstCell:currentCell").Select
You are trying to select the range named "firstCell:currentCell" instead of
selecting range from first Cell to currentCell
You should change it to
.Range(firstCell,currentCell).select
Try using below code and see if it does what you want it to do
Dim GROUP_LAST_CELL As Range
With Worksheets("627")
LAST_ROW = .Range("A" & Rows.Count).End(xlUp).Row
I = 1
While I <= LAST_ROW
Set GROUP_LAST_CELL = .Cells(I, 1).End(xlDown)
.Range(.Cells(I, 1), GROUP_LAST_CELL).Rows.Group
I = GROUP_LAST_CELL.Row + 2
Wend
End With

Answer 4

According to what i understood from the question, i think what you want to do is to loop across all the elements in a particular column, skipping all the blanks.
You can do so by
Calculating the lastrow of the column
Looping across from the first row count to the calculated lastRow count
Applying a condition within the loop to only print the non-empty cells
Code Block
Sub test()
Dim j As Long, lastRow As Long
lastRow = Cells(Rows.Count, "A").End(xlUp).Row
For j = 1 To lastRow
If Cells(j, "A").Value <> "" Then
MsgBox (Cells(j, "A").Value)
End If
Next j
End Sub
I Hope this helped!