Hi Johann,
That is another example usage of a boolean expression as a criterion. In
your example you could actually omit the -- since you are multiplying the
expression already. The multiplication will also coerce the boolean to 0 or
1:
{ =LARGE(($E$1:$E$122=$G1)*$F$1:$F$122,COUNTIF($G$1:$G1,$G1)) }
The formula builds an array of 122 elements (the size of the ranges e1:e122
/ f1:f122). Each element equals [0 or (1 if E=(thisrow's G))] * [F]. That
resolves to an array of 0's and values from column G. That array is then
sorted from largest to smallest. Then the CountIf is calculated: The
CountIf expression counts the number of occurences of [this row's G] in
[this and prior row's G values] let's call that count "n". Finally, Excel
returns the nth value from the sorted array.
_E F G formula evaluation
_
2 100 1 large({0,0,150,0,0,180,0,0,50},1) = large({180,150,50,..},1)
= 180
4 200 4 large({0,200,0,0,220,0,0,130,0},1) = large({220,200,130,..},1)
= 220
1 150 2 large({100,0,0,250,0,0,75,0,0},1) = large({250,100,75,..},1)
= 250
2 250 4 large({0,200,0,0,220,0,0,130,0},2) = large({220,200,130,..},2)
= 200
4 220 1 large({0,0,150,0,0,180,0,0,50},2) = large({180,150,50,..},2)
= 150
1 180 2 large({100,0,0,250,0,0,75,0,0},2) = large({250,100,75,..},2)
= 100
2 75 1 large({0,0,150,0,0,180,0,0,50},3) = large({180,150,50,..},3)
= 50
4 130 4 large({0,200,0,0,220,0,0,130,0},3) = large({220,200,130,..},3)
= 130
1 50 1 large({0,0,150,0,0,180,0,0,50},4) =
large({180,150,50,0,..},4) = 0
...
My brain is kind of tired and I'm not sure exactllllly sure what the overall
function of your formula is at the moment though :)
Asa
-----Original Message-----
From: excel-macros@googlegroups.com [mailto:excel-macros@googlegroups.com]
On Behalf Of johann
Sent: Friday, February 24, 2012 12:49 PM
To: MS EXCEL AND VBA MACROS
Subject: Re: $$Excel-Macros$$ Meaning of minus minus or -- in an Excel
function
what about :
{=LARGE(- -($E$1:$E$122=$G1)*$F$1:$F$122,COUNTIF($G$1:$G1,$G1))}
?
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