Create Named Ranges from Subtotal Group - vba

Question

I need to create named ranges from a sheet to which I have added subtotals.
So as shown in the picture I need to create with VBA named ranges for all the groups (E4:F16 shown on the picture). The subtotals are created for each change in Column D ("Group"). The additional rows added by the subtotal wizard (Row 17 as shown) should not be included in the named range. I need to create about 10 similar named ranges in total.
The total number of rows with data on that sheet (I've named it R 14) is fixed but the number of elements within a group is variable. So for instance I need code to find out that cell A17 is empty and create a named range E4:F16.
So far I managed to create a public function that can create a named range given start row, end row, start column and end column:
Public Function createNamedRangeDynamic_1(sheetName As String, _
myFirstRow As Long, _
myLastRow As Long, _
myFirstColumn As Long, _
myLastColumn As Long, _
counter As Integer)
Dim myWorksheet As Worksheet
Dim myNamedRangeDynamic As Range 'declare object variable to hold reference to cell range
Dim myRangeName As String 'declare variable to hold defined name
Set myWorksheet = ThisWorkbook.Worksheets(sheetName) 'identify worksheet containing cell range
myRangeName = sheetName & "_" & counter 'specify defined name
With myWorksheet.Cells
Set myNamedRangeDynamic = .Range(.Cells(myFirstRow, myFirstColumn), .Cells(myLastRow, myLastColumn)) 'specify cell range
End With
ThisWorkbook.Names.Add Name:=myRangeName, RefersTo:=myNamedRangeDynamic 'create named range with workbook scope. Defined name is as specified. Cell range is as identified, with the last row and column being dynamically determined
End Function
My problem is that I can't make any kind of subroutine that can use the above code to produce the named ranges. I tried something like the following:
Sub makeRanges()
Dim sheetName As String
Dim firstRow As Long
Dim nextRow As Long
Dim lastRow As Long 'the lowest row of the group/range
Dim endRow As Long 'the last row with data on the sheet
Dim firstCol As Long
Dim lastCol As Long
Dim cell As Range
Dim myWorksheet As Worksheet
Dim counter As Integer
sheetName = "R 14"
firstCol = 5
lastCol = 6
groupNum = 9
fistRow = 4
endRow = 147
counter = 1
Set myWorksheet = ThisWorkbook.Worksheets(sheetName)
With myWorksheet.Cells
For Each cell In .Range("A" & firstRow, "A" & endRow)
If cell.Value = "" Then
nextRow = cell.Row
Exit For
End If
Next cell
lastRow = nextRow - 1
Call createNamedRangeDynamic_1(sheetName, _
firstRow, _
lastRow, _
firstCol, _
lastCol, _
counter) ' create named range
firstRow = nextRow + 1
counter = counter + 1
End With
End Sub
So that's my progress so far.

Answer 1

you can use Areas property of Range object and boil all that down to:
Option Explicit
Sub makeRanges()
Dim sheetName As String, sheetNameForNamedRange as String
Dim counter As Long
sheetName = "R 14"
sheetNameForNamedRange = Replace(sheetName, " ", "_") ' named range name doesn't accept blanks
Dim area As Range
With ThisWorkbook 'reference wanted workbook
For Each area In .Worksheets(sheetName).Range("A4:A147").SpecialCells(xlCellTypeConstants).Areas ' loop through areas of the not empty cell range along column A in 'sheetName' sheet of referenced workbook
counter = counter + 1 ' update counter
.Names.Add Name:=sheetNameForNamedRange & "_" & Format(counter, "00"), RefersTo:=area.Offset(, 4).Resize(, 2) ' add current named range as current area offset 4 columns to the right and wide two columns
Next
End With
End Sub
note: Format(counter, "00") is to have last two digits as format "_01, "_02", etc..