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# How to use an array of non-adjacent cells.

Posted on 2015-01-27
Medium Priority
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I am trying to figure out how to perform a calendar week number formula, array formula, or maybe it is just a VBA function.

My workbook has a Yearly worksheet, and 1 thru 12 worksheets for each month. The week number is calculated on a end or the week (Saturday) value from a typical looking calendar. The issue is that the end of the month may not always end on a Saturday. So I need to figure out how to move from Right to left in a row until it finds a non zero value in a series of cells.

The attached file has more detail on worksheet "3"

Any guidance here would be appreciated.
Rotation-Calendar.xlsm
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Question by:DougDodge
• 2

LVL 24

Expert Comment

ID: 40574781
Change all references of M27 to MAX(A27:M27).

So you have:

in P27: =WEEKNUM(MAX(A27:M27),1)
in P28: =MAX(A27:M27)-DATE(YEAR(MAX(A27:M27)),1,0)
in P29: =DATE(YEAR(MAX(A27:M27)),12,31)-MAX(A27:M27)
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LVL 24

Accepted Solution

Phillip Burton earned 2000 total points
ID: 40574785
Then, to accommodate February 2015, add a condition IF(A27="","",      rest of formula     )

So you have:

in P27: =IF(A27="","",WEEKNUM(MAX(A27:M27),1))
in P28: =IF(A27="","",MAX(A27:M27)-DATE(YEAR(MAX(A27:M27)),1,0))
in P29: =IF(A27="","",DATE(YEAR(MAX(A27:M27)),12,31)-MAX(A27:M27))

You can then copy these three formulas down to P33:P35 so that it would work in May 2015..
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Author Closing Comment

ID: 40575293
Worked well. I did however have to make some slight adjustments....

=IF(A33="","",WEEKNUM(MAX(A33,C33,E33,G33,I33,K33,M33),1)& " - Week No.")
=IF(A33="","",MAX(A33,C33,E33,G33,I33,K33,M33)-DATE(YEAR(MAX(A33,C33,E33,G33,I33,K33,M33)),1,0)& " - Day of the Year.")
=IF(A33="","",DATE(YEAR(MAX(A33,C33,E33,G33,I33,K33,M33)),12,31)-MAX(A33,C33,E33,G33,I33,K33,M33)& " - Days Remaining.")

Simply because THERE COULD BE NUMBERS IN B33, D33, F33, H33, J33, L33, and this would also hide the text if the value of the If statement was ""

Thank you once again Philip.....
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