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Thread: Formula for Counting Backwards

20150221, 14:26 #1
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Formula for Counting Backwards
Does anyone know if there is a formula for counting backwards based on the current date and specific criteria?
Basically, I have dates in column A, with data in both columns B and C, and Yes or No in column D.
I would like the formula to look in column A for the current date, and then compare the Yes or No entry in column D on the same row as the current date. If the entry in column D is Yes, count backward (or up) the consecutive number of Yes entries.
I have attached screenshot of an example worksheet and the desired results. Using the example, the answer I’m looking for in example 1 is 5 and example 2 is 0.
Any ideas will be much appreciated.

20150221, 15:19 #2
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Baseball,
Here is a simple User Defined Function (UDF) that will easily do what you are looking for. This sample has a range of dates in col A, Yes/No values in column D, and assumes today is 2/21/2015 but it will work with any date.
Baseball1.png
In the cell where you want the result, enter the formula =RevCount(A1:A20) where A1:A20 is the range of the dates. In a standard module, enter the following code:
Code:Public Function RevCount(rng As Range) Dim cell As Range Dim count As Integer count = 0 LastRow = ActiveSheet.Cells(Rows.count, 1).End(xlUp).Row For Each cell In rng If cell = Date Then For I = cell.Row To rng.Row Step 1 If Cells(I, 4) = "Yes" Then count = count + 1 Else: GoTo Done End If Next I End If Next cell Done: RevCount = count End Function
Maud

20150221, 15:50 #3
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A non VBA approach:
Using a helper column in column E to provide a running total of consecutive "Yes"
In cell E1, place the formula =IF(D1="Yes",1,0) Different because it is the first row.
In cell E2, place the formula =IF(D2="Yes",E1+1,0) then copy down
In the cell you would like the result to appear, enter the formula
=IF(INDEX(A1:E20,MATCH(TODAY(),A1:A20,0),4)="Yes", INDEX(A1:E20,MATCH(TODAY(),A1:A20,0),5),0)
Baseball2.png
This formula will look for the date in col A that matches today's date then looks across to column E for the number of consecutive "Yes". If the today's date row is a Yes, it will return that number in col E else it will return a zero. You can hide the entire helper column E, use a white font color to mask it, use a different column way off to the right, or put the helper column on a different sheet. Your preference.
JTJ,
MaudLast edited by Maudibe; 20150221 at 15:59.

20150221, 16:04 #4
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Nice work Maud!
I took a slightly different tact assuming that there would be more than one list per sheet (probably wrong but that's how I read the example).
Here's my shot at a UDF.
Code:Option Explicit Function lCountConsecutiveUp(rngTarget As Range) As Long Dim lLastRow As Long Dim lFirstRow As Long Dim lCurRow As Long Dim lCntr As Long lCurRow = rngTarget.Row() Do Until ((Cells(lCurRow, 1).Value = Date) Or (Cells _ (lCurRow, 1).Value = "")) lCurRow = lCurRow + 1 Loop lLastRow = lCurRow lFirstRow = rngTarget.Row() lCntr = 0 For lCurRow = lLastRow To lFirstRow Step 1 If UCase(Cells(lCurRow, 4)) = "NO" Then Exit For Else lCntr = lCntr + 1 End If Next lCurRow lCountConsecutiveUp = lCntr End Function 'lCountConsecutiveUp()
HTHMay the Forces of good computing be with you!
RG
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20150221, 16:16 #5
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Yes RG, many ways to skin a cat. I like your forethought of using Ucase which is a worthy precaution I always seem to forget. Nicely done!
Maud

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20150221, 23:13 #6
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Maudibe and RetiredGeek,
Thanks for your help. My knowledge is very limited when it comes to VBA. So, I took the nonVBA approach. That formula was exactly what I needed.
Maudibe, I did play with the worksheet you attached and I like the approach. It was much cleaner. But, I have a couple questions.
(1) If I made a change in column D (Yes or No) to test the code, I had to use the Shift F3 function to have the cell recalculate. I checked to ensure I had auto calculation turnedon and it was. So I'm not sure why the code does not auto calculate.
(2) I decided to insert a couple of columns before column A and the code stopped working. Again, just to get a feel for the impact it would have on the UDF. I assumed the line of code: If Cells(I,4)=”Yes” referenced the fourth column (column D) so I changed it to 6 to represent column F, but that did not work. I checked to ensure that the formula in the cell where I wanted the results did change the date range to reflect =RevCode(C1:C20).
Again, thanks to all for your help and quick response.

20150222, 00:52 #7
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Baseball,
I'm not sure why the code does not auto calculate
I decided to insert a couple of columns before column A and the code stopped working.
I removed a not needed line and took the opportunity to use the wisdom from Retired Geek and make it case insensitive so the a Yes is the same as a YES or yes entry. Note in the spreadsheet that as the date changed to 2/22/2015 the returned value increased to 5
HTH,
Maud
Code:Public Function RevCount(rng As Range) Application.Volatile Dim cell As Range Dim count As Integer count = 0 For Each cell In rng If cell = Date Then For I = cell.Row To rng.Row Step 1 If UCase(Cells(I, 6)) = "YES" Then count = count + 1 Else: GoTo Done End If Next I End If Next cell Done: RevCount = count End Function
Last edited by Maudibe; 20150222 at 08:36.

20150223, 02:30 #8
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Straight formula method:
=MATCH(TODAY(),$C$1:$C$20,0)LOOKUP(2,1/($C$1:$C$20<TODAY())/($F$1:$F$20="no"),ROW($C$1:$C$20))Regards,
Rory
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20150223, 03:21 #9
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Hi rory
Basically, I have dates in column A, with data in both columns B and C, and Yes or No in column D.
But both Maud and RG gave the correct count.
What am I missing?
zeddy

20150223, 03:28 #10
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Nothing. The examples shown had dates in ascending order and the logic of the question made me figure it was probably a safe bet that it would be sorted that way. I should have mentioned the assumption though.
(the formula was tailored to Maud's workbook since the OP's pdf was no use )Regards,
Rory
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20150223, 13:32 #11
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Hi rory
well, once I put my dates in order, your formula worked of course.
Which is why I thanked you in advance.
Though, for the life of me, I cannot understand the purpose of the original request.
Maybe it has something to do with this game called 'baseball', which I believe is popular over there.
zeddy

20150224, 03:05 #12
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That's a corrupted version of rounders, is it not?
Regards,
Rory
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20150224, 05:10 #13
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Now, you wouldn't be insulting our national past time I hope?

20150224, 06:05 #14
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Hi Maud
Absolutely not. That wouldn't be cricket.
zeddy

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rory (20150224)

20150224, 17:07 #15
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Maud,
Pay no attention they are still upset about 1776 & 1812! ROTFLOL.gif
May the Forces of good computing be with you!
RG
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