Reputation: 45
As for the problem, I need to be able to compare all data in Variant array A to all data in Variant array B. I know I need some kind of double loop (so that every A value is checked against all B values), but I can't figure out how to do it. Here's what I have so far:
Sub Button_Click()
Dim trgtRange As Variant
Dim tempRange As Variant
Set myRange = ThisWorkbook.Sheets(1).Range("L:L")
For Each cell In myRange
If IsEmpty(cell) Then
ActiveCell.Offset(-1, 0).Select
currentRow = ActiveCell.Row
Set trgtRange = Range("L2:L" & currentRow)
Exit For
End If
Next cell
Set tempRange = Range("A1:A" & currentRow - 1)
' Insert a double loop here
End Sub
So, trgtRange
is the Variant A and tempRange
is Variant B. I know I could have set the Variant B up a little easier, but I already did it that way. After all, code should be polished as last operation anyway.
You might be wondering why Variants A and B are completely the same. Well, that's because I need to compare them so that I can find values that are close to each other, (i.e 10000 and 12000) and I need to incorporate some kind of tolerance for it.
Upvotes: 2
Views: 25405
Reputation: 144
Here is my answer. Why do you need two loops to do this. Some relative addressing handles this issue quite nicely. Set up a spreadsheet like this for an example:
and your code is simply this
Sub Button_Click()
Dim dblTolerance As Double
Dim tmp As Range
'Get source range
Set tmp = ActiveSheet.Range("A2")
'Get tolerance from sheet or change this to an assignment to hard code it
dblTolerance = ActiveSheet.Range("D13")
'use the temporary variable to cycle through the first array
Do Until tmp.Value = ""
'Use absolute function to determine if you are within tolerance and if so put match in the column
'NOTE: Adjust the column offset (set to 4 here) to match whichever column you want result in
If Abs(tmp.Value - tmp.Offset(0, 2).Value) < dblTolerance Then
tmp.Offset(0, 4).Value = "Match"
Else
tmp.Offset(0, 4).Value = "No Match"
End If
'Go to the next row
Set tmp = tmp.Offset(1, 0)
Loop
'Clean up
Set tmp = Nothing
End Sub
The comments in the code explain how it works. This is superior to a double loop because relative referencing is faster, the memory use is more efficient and you only have to make one pass at each row.
If you are required for some reason to use a double loop let me know, but that is inferior performance wise to this methodology. Hope this helps.
Upvotes: 1