| Home |
| Search |
| Today's Posts |
|
#8
|
|||
|
|||
http://img70.imageshack.us/img70/6198/sumif2un.jpg
Biff "J Shrimps, Jr." wrote in message ... Perfect!! Just did all 24,000 rows with your formula. Have never used - or heard of - the Row() or Indirect() functions. Verified your formula by comparing your result with with a few hundred rows that I knew were correct, also caught many examples where I had cut-and-pasted the old formula incorrectly, or pasted right past month 0 for that product. With your formula, I started @ row 1, and pasted all the way down to row 24,000. On this side of the pond, we say you are a G E N I U S. I can't believe we ever revolted. "Richard Buttrey" wrote in message ... Hi, One solution is as follows. It assumes your data is sorted by product and month. i.e. all product 100 (say) are listed underneath each other and the months are ascending. Use a helper column (say col F) if your data below is in cols A:E. It Put the following formula in col F, and copy it down. =IF(A10<A9,ROW(),F9) This recognises when a product changes and results in the first row of every change in product number being recorded for that product range. Then your result formula in column E will be =INDIRECT("C$"&ROW())/SUM(INDIRECT("$D$"&F10):INDIRECT("D"&ROW())) This assumes your data starts in row 10. Adjust accordingly HTH On Thu, 6 Oct 2005 21:49:01 -0400, "J Shrimps, Jr." wrote: Need to divide a value in a column by a set of running sum values in an adjacent column. Data looks like this: Product Month Bal RemBal Result Calculation: 100 01 $10.00 $10 100% 10/10 100 02 $5.00 $15 25% 5/(10+15) 100 03 $2.00 $12 32% 12/(10+15+12) ..... 100 60 $9.00 $9 .01% 9/(10+15+12+ 60 months of balances ) 400 01 $8.00 $8 100% 8/8 400 02 $5.00 $35 19% 5/(8+35) now we have a new value and the month's sequence starts at 1 (01). Currently the formula is: row 8 =P8/SUM(R$7:R8) row 9 =P9/SUM(R$7:R9) row 10 =P10/SUM(R$7:R10) row 11 =P11/SUM(R$7:R11) in this case, the new product started at row 7 and might continue for 60 more rows, or just 6 more, where the $R$7 part of the formula would change again. Usually, every 60 or so lines, (the # of months is different, depending on the product) l have to re-start the formula (replacing $R$7 with $R$67 for example) so the SUM starts with month 0 and continues summing the contents of column R , until the last month for that product. I have over 24,000 lines of this, it is getting very tedious to have to re-copy the formula every time there is a new product., making sure my formula captures a running sum starting with the first month and divides the value in the current row into that running sum. I'm planning on starting with "IF(P8<p7" - ie a new product has started so start the forumula using the current row as the cell placed in the formula "sum($R$7", start the running sum up, and divide the contents of the current row into the running sum values until a new product, where the process starts all over again. Is it possible to "Anchor" a running sum formula based on changing criteria with some kind of vlookup/Sumif (or something else)? __ Richard Buttrey Grappenhall, Cheshire, UK __________________________ |
Threaded Mode
