Ranking Top N but excluding ties at Nth position

Question

Hi,
I have a requirement where I need to do top N analysis report. I came across problem where we have ties at Nth position, my client want not to show any Nth value because that will be misleading and if there are 3 value at Nth place then what to remove. what he want is to exclude Nth values and show only until N -1th place.
Show top 5 from following list:
A 100
B  75
C 50
D 25
E 5
F 5
G 5
H 4
I 3
Webi Rank function will give following:
A 100
B  75
C 50
D 25
E 5
F 5
G 5
What I want is way to get following:
A 100
B  75
C 50
D 25
Any thought ?
Thanks in Advance
Kumar

Answer 1

Let's say we have the grid like:
Dimension 
Measure 
A 
10 
B 
5 
C 
6 
D 
8 
E 
7 
F 
5 
G 
5 
H 
5 
I 
2 
Now, sort the measure column in descending order. we get:
Dimension 
Measure 
A 
10 
D 
8 
E 
7 
C 
6 
B 
5 
F 
5 
G 
5 
H 
5 
I 
2 
Now, create a variable:
v_Filter =If(RunningCount([Dimension])<=5;1;0)
Apply a block level filter as : v_Filter Equal To 1
You always get top 5 rows, no matter tie occurs or not.
Dimension 
Measure 
A 
10 
D 
8 
E 
7 
C 
6 
B 
5