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Help with SUMPRODUCT formula
I need some help with this formula. I think i've got it wrong.
Cutting Regime Length Date of cut Metres Cut SUMMER & WINTER 36 17-Oct-08 SUMMER & WINTER 32 9-Sep-08 WINTER ONLY 22 SUMMER & WINTER 55 9-Sep-08 What i'm trying to do is calculate the total length of hedges cut as each new date is entered. Column A has the cutting regime, Column B is the hedge length, Column C is the date the hedge was cut and Column D is where i'd like to see the result. As each new date is entered the figure in Column D will grow until it reaches our target (all hedges cut). For example On 9th Sept the figure would have read 87 (32+55). Another hedge was cut on 17th Oct which measured 36 metres so the new total would read 123 (87+36). We only want the length of a hedge added to the total if its been cut. To make things more complicated i also need to split it between the two regimes. So i'd have a figure for 'summer & winter' and 'winter only' This is the formula i had:- =SUMPRODUCT((A2:A5='winter only')*(C2:C5<=D2),B2:B5) The headings for each column are A1, B1 etc This would really improve our performance monitoring so many thanks in advance. |
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