Excel MAXIF function or emulation?

Question

I have a moderately sized dataset in excel from which I wish to extract the maximum value of the values in Column B, but those that correspond only to cells in Column A that

Answer 1

A limitation with the code provided thus far is that you are restricted to 2 conditions. I decided to take this code further to not restrict the number of conditions for the MaxIfs function. Please see the code here:

        Function MaxIfs(MaxRange As Range, ParamArray Criteria() As Variant) As Variant
        Dim n As Long
        Dim i As Long
        Dim c As Long
        Dim f As Boolean
        Dim w() As Long
        Dim k As Long
        Dim z As Variant

        'Error if less than 1 criteria
        On Error GoTo ErrHandler
        n = UBound(Criteria)
        If n < 1 Then
            'too few criteria
            GoTo ErrHandler
        End If
            'Define k
            k = 0            

        'Loop through cells of max range
        For i = 1 To MaxRange.Count

        'Start by assuming there is a match
        f = True

            'Loop through conditions
            For c = 0 To n - 1 Step 2

                'Does cell in criteria range match condition?
                If Criteria(c).Cells(i).Value <> Criteria(c + 1) Then
                    f = False
                End If

            Next c

            'Define z
            z = MaxRange

            'Were all criteria satisfied?
            If f Then
                k = k + 1
                ReDim Preserve w(k)
                w(k) = z(i, 1)
            End If

        Next i

        MaxIfs = Application.Max(w)

        Exit Function
        ErrHandler:
        MaxIfs = CVErr(xlErrValue)

    End Function

This code allows 1 to multiple conditions.

This code was developed with reference to multiple code posted by Hans V over at Eileen's Lounge.

Happy coding

Diedrich