MDX Group & Count - sql-server

Question

I'm having the below MDX Query
WITH
MEMBER Measures.Improvement AS
[Measures].[School Evaluation]
-
(
[Measures].[School Evaluation]
,[Cycle].[Name].CurrentMember.PREVMEMBER
)
MEMBER Measures.PreviousEvaluation AS
(
[Measures].[School Evaluation]
,[Cycle].[Name].CurrentMember.PREVMEMBER
)
SELECT
Measures.Improvement ON COLUMNS,
Filter (
{ [Cycle].[Name].[Name].ALLMEMBERS }
* { [School].[Name En].[Name En].ALLMEMBERS }
, Measures.PreviousEvaluation > 0
AND
[Measures].[School Evaluation] > 0
)
ON ROWS
FROM [SchoolCube];
This code generates the below output
Now what I need is to count the occurrence of Improvement "-2,-1,0,..." across all the schools So I have something like this
How Can I achieve this?
Thanks,

Answer 1

You have to add another dimension "Improvement" that holds possible values for either a fixed range, e.g. -10..+10 or you build the range dynamically based on your data.
Add a second measure group to the cube based on that dimension table and create a measure "Improvement base", that sums the improvement value. This is a helper measure to simplify the following steps.
Now you can create a new calculated measure:
CREATE MEMBER CURRENTCUBE.[Measures].[Count Improvements] AS
SUM(IIF([Measures].[Improvement] = [Measures].[Improvement base], 1, 0));
Maybe you have to scope the All-member of the Improvement dimension to sum the children.