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Dynamically returning the cell position of a field in a pivot

Posted on 2012-04-12
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Last Modified: 2012-04-13
Hi,

I have a pivot with data about search rankings.
The data consists of keywords matching webpages for many given positions.

Objectives: to build a formula that retrieves the rank of each keyword on a per webpage basis such as this one:
=(GETPIVOTDATA(TEXT("Rank",),$A$1,"Product","Internet","Webpage",$A$5,"Keyword",$A5))

Constraint:the formula needs to be pasted into a very long column alongside the companion pivot table without any modification.

The Catch: some keywords are associated with more than one webpage. Therefore, the hardcoded "Webpage" cell position ($A$5) in the formula above has to be modified as often as there are webpages in the pivot table...

Goal: to replace any hardcoded reference to the "Webpage" ($A$5 in the formula above)
by something dynamic (address, match, find ???) which would
- look for the closest cell above with a string containing "http://",
- return its position and
- feed it to the getpivotdata formula

I have included a spreadsheet to illustrate the situation.

Thanks for the time you take to review this request for help

fg
20120412-getpivotdata-parentfiel.xlsx
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Comment
Question by:fredericgilbert
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3 Comments
 
LVL 42

Accepted Solution

by:
dlmille earned 500 total points
ID: 37840908
*** Edited ***

LOOKUP approach, put this in cell D5 and copy down:
[D2]=IFERROR(GETPIVOTDATA(TEXT($B$4,),$A$1,"Product",$B$2,"Webpage",LOOKUP(2,1/(LEFT($A$5:$A5,4)="http"),$A$5:A5),"Keyword",$A5),"")


The LOOKUP function finds the last row in column A starting with "http" and has built-in array functionality so CTRL-SHIFT-ENTER is not required so should be more efficient than those type of array functions deriving the same result (tho, I may stand corrected!)

For more on the LOOKUP function and how it works in this instance, see this tip:
http:/Q_27669653.html#a37829864

See attached.

Dave
20120412-getpivotdata-parentfiel.xlsx
0
 

Author Comment

by:fredericgilbert
ID: 37842212
Hello Dave,

I accept your solution for my situation.
 
More important, you just teached me a neat trick with the (2,1/(A:A<>""),A:A) part, very informative with the linked explanations.

Thanks a lot, much appreciated.

fg


Note: yesternight, I worked on it and came up with a cumbersome solution that provided me with the cell position:

=IF(ISERROR(CELL("address",INDEX(a:a,MATCH(VLOOKUP(a28,URL,1,FALSE),a:a,0)))),OFFSET(b27,0,0),(CELL("address",INDEX(a:a,MATCH(VLOOKUP(a28,URL,1,FALSE),a:a,0)))))

Benching against a named range listing all the URLs and upon an error, I was able to retrieve the position of the above cell containing the url then feed it back into the getpivotdata formula to extract the rank...
0
 

Author Closing Comment

by:fredericgilbert
ID: 37842249
The provided solution is simple yet effective.

However, the most valuable takeaway from Dave resides in the linked information from a previous contribution he made that explains how the Lookup(2,1/(A:A<>""),A:A) works.

See: http://www.experts-exchange.com/Programming/Languages/Visual_Basic/Q_27669653.html#a37829864

I learned something important here.
Thanks Dave for your comprehensive solution.
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