How do I sum consecutive rows that meet a criteria?

S

shimmer

New Member
Joined
Aug 29, 2013
Messages
3
In the table below the first column is my data, the second is what I want to use a formula to do, I just put these values in by hand. Any ideas would be really appreciated.
[TABLE="width: 168"]
<colgroup><col><col></colgroup><tbody>[TR]
[TD="align: center"]What I have[/TD]
[TD="align: center"] What I want a formula to do[/TD]
[/TR]
[TR]
[TD="align: center"]0[/TD]
[TD="align: center"]0[/TD]
[/TR]
[TR]
[TD="align: center"]0[/TD]
[TD="align: center"]0[/TD]
[/TR]
[TR]
[TD="align: center"]0[/TD]
[TD="align: center"]0[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]1[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]2[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]3[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]4[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]5[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]6[/TD]
[/TR]
[TR]
[TD="align: center"]0[/TD]
[TD="align: center"]0[/TD]
[/TR]
[TR]
[TD="align: center"]0[/TD]
[TD="align: center"]0[/TD]
[/TR]
[TR]
[TD="align: center"]0[/TD]
[TD="align: center"]0[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]1[/TD]
[/TR]
[TR]
[TD="align: center"]0[/TD]
[TD="align: center"]0[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]1[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]2[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]3[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]4[/TD]
[/TR]
</tbody>[/TABLE]
 

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you need to tell us what you want to do - it starts out looking like you are summing up to 3 consecutive numbers but then changes. Are you just counting all consecutive 1's ?
 
Upvote 0
shimmer said:
Hi
Thanks for replying. Yes I'm trying to add up consecutive 1's.
Click to expand...

If the data consists of just 0's and 1's and you want to add up each consecutive 1 in-between 0's...

[TABLE="width: 96"]
<colgroup><col style="width: 48pt;" span="2" width="64"> <tbody>[TR]
[TD="class: xl63, width: 64, bgcolor: transparent"]X[/TD]
[TD="class: xl63, width: 64, bgcolor: transparent"]Y[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]2[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]3[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]4[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]5[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]6[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]0[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]2[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]3[/TD]
[/TR]
[TR]
[TD="class: xl64, width: 64, bgcolor: white"]1[/TD]
[TD="class: xl64, width: 64, bgcolor: white"]4[/TD]
[/TR]
</tbody>[/TABLE]

B2, jsut enter and copy down:
Rich (BB code): 
=IF(A2=0,0,IFERROR(SUM(INDEX($A$1:A1,LOOKUP(9.99999999999999E+307,1/($A$1:A1=0),
  ROW($A$1:A1)-ROW($A$1)+1)):A2),0))
 
Upvote 0
another way with a shorter formula

[TABLE="width: 192"]
<colgroup><col span="3"></colgroup><tbody>[TR]
[TD]X[/TD]
[TD]Y[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]1[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]2[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]3[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]4[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]5[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]6[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]1[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]1[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]2[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]3[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]4[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD="colspan: 2"]formula in B2[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="colspan: 3"]=IF(A2=0,0,IF(A1=1,1+B1,1))[/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]
 
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