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#1
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How do I count crossing zero in a column of integers?
I have a very long column of data which moves from positive to negative. I
want to count the occasions where it crosses zero, but am having trouble writing a formula for this condition. Is there a way I can automatically compare consecutive cells in the column to identify whether it has changed from negative to positive? |
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#2
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How do I count crossing zero in a column of integers?
Hi Suzie,
One way is to use conditional formatting. Select your entire row and set condition 1 If cell value is less than zero format blue condition 2 If cell value is greater than zero format red HTH Martin |
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#3
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How do I count crossing zero in a column of integers?
"MartinW" wrote: Hi Suzie, One way is to use conditional formatting. Select your entire row and set condition 1 If cell value is less than zero format blue condition 2 If cell value is greater than zero format red HTH Martin Thanks Martin. Now I can clearly differentiate between them, but can't get my head around how I would go about counting the changes (other than manually, which would be very time consuming). Is it possible to do this in Excel? cheers, Suzie |
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#4
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How do I count crossing zero in a column of integers?
If you values start in A1 going down A25 you can put this in B2 and copy
down along =AND(A10,A2<0) will return TRUE when a value changes from 0 to <0 to count it =SUMPRODUCT(--(A1:A240),--(A2:A25<0)) -- Regards, Peo Sjoblom Excel 95 - Excel 2007 Northwest Excel Solutions www.nwexcelsolutions.com "It is a good thing to follow the first law of holes; if you are in one stop digging." Lord Healey "suzie" wrote in message ... I have a very long column of data which moves from positive to negative. I want to count the occasions where it crosses zero, but am having trouble writing a formula for this condition. Is there a way I can automatically compare consecutive cells in the column to identify whether it has changed from negative to positive? |
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#5
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How do I count crossing zero in a column of integers?
Thank you... that has worked well!
"Peo Sjoblom" wrote: If you values start in A1 going down A25 you can put this in B2 and copy down along =AND(A10,A2<0) will return TRUE when a value changes from 0 to <0 to count it =SUMPRODUCT(--(A1:A240),--(A2:A25<0)) -- Regards, Peo Sjoblom Excel 95 - Excel 2007 Northwest Excel Solutions www.nwexcelsolutions.com "It is a good thing to follow the first law of holes; if you are in one stop digging." Lord Healey "suzie" wrote in message ... I have a very long column of data which moves from positive to negative. I want to count the occasions where it crosses zero, but am having trouble writing a formula for this condition. Is there a way I can automatically compare consecutive cells in the column to identify whether it has changed from negative to positive? |
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