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Cumulative formula based on entries

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Cumulative Formula Based On Entries

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ConfusedI need help, Formula in L4 is fine as below. I'm trying to get L6, so after W
is inserted into I6 instead of adding up H4-H6 it starts adding up at H7 down
until next W is inserted, then start process again. I would like a formula that
doesn't matter where L or W are: it justs starts adding from the last W for
column I.
=IF(ISERROR(IF(I4="W",-H4,H4*E4/G4)),"-",IF(I4="L",-H4,H4*E4/G4))    


B        E      G      H        I      J      K        L
4  2.5      6      4    2.50      L      5      7.5    -2.5
5  7.5      5      2    3.75      L  11.25  13.75  -6.25
6  13.75    6    2      5        W    -        -      8.75
7  2.5      7    2      1.25    L    3.75  6.25  -1.25

I hope this all makes sense.

Thanks
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Shocked
Data Filter with Subtotals
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You could try to filter your data and then enter your formula as a subtotal.  You would need to distinquish each group of L's spearately in column I.

Alternatively, you could use some VBA code to run the cumulative sums between the W values.

Excel Spreadsheet:
 IJKL
1    
2 L 5 7.5 7.5
3 L 11.25 13.75 21.25
4 W - - 
5 L 3.75 6.25 6.25
6    


Assuming you wanted to sum on column K you could select the cells in column L and run the following VBA code:

VBA Code:
Sub Sum_I()
Dim tempsum As Single
Dim a As Variant
tempsum = 0
For Each a In Selection
    If Trim(a.Offset(0, -3).Value) = "L" Then
        tempsum = tempsum + a.Offset(0, -1).Value
        a.Formula = tempsum
    Else
        tempsum = 0
    End If
Next a
End Sub

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