MDX to retrieve year and months with lag on month - mdx

Question

I have a hierarchy Time of [year].[month]
I want to gets rows years and months, going back six periods, but I also want to show the year.
So this I can do, using lag to find a set of months, and then Ascendants.
SELECT
NON EMPTY {[Measures].[modality]} ON COLUMNS,
NON EMPTY {Hierarchize(Generate({[Time.CalYearMonth1].[2016].[1].lag(6):[Time.CalYearMonth1].[2016].[1]},ASCENDANTS([Time.CalYearMonth1].CurrentMember)))}
ON ROWS
FROM [mt_report]
When I do this, I get a row for the year member, which is basically a row I don't want.
In Pentaho, this gives the result:
Axis #0:
{}
Axis #1:
{[Measures].[modality]}
Axis #2:
{[Time.CalYearMonth1].[All Time.CalYearMonth1s]}
{[Time.CalYearMonth1].[2015]}
{[Time.CalYearMonth1].[2015].[7]}
{[Time.CalYearMonth1].[2015].[8]}
{[Time.CalYearMonth1].[2015].[9]}
{[Time.CalYearMonth1].[2015].[10]}
{[Time.CalYearMonth1].[2015].[11]}
{[Time.CalYearMonth1].[2015].[12]}
{[Time.CalYearMonth1].[2016]}
{[Time.CalYearMonth1].[2016].[1]}
Row #0: 0.95
Row #1: 1.11
Row #2: 1.08
Row #3: 1.14
Row #4: 1.13
Row #5: 1.16
Row #6: 1.15
Row #7: 1.15
Row #8: 1.11
Row #9: 1.17
I don't know how to avoid the summary per year.

Answer 1

ASCENDANTS definitions seems to suggest it will return members from all levels above - this will include the All level which it sounds like you'd like to avoid.
You could try Ancestors to get just the Years:
SELECT
NON EMPTY
{[Measures].[modality]} ON COLUMNS
,NON EMPTY
{
Hierarchize
(
{
[Time.CalYearMonth1].[2016].[1].Lag(6) : [Time.CalYearMonth1].[2016].[1]
,Generate
(
{
[Time.CalYearMonth1].[2016].[1].Lag(6) : [Time.CalYearMonth1].[2016].[1]
}
,Ancestors
(
[Time.CalYearMonth1].CurrentMember
,1 //<<<change this to the distnace year is away from month in the levels of the user hierarchy
)
)
}
)
} ON ROWS
FROM [mt_report];
Seems to test ok in AdvWrks:
SELECT
{} ON 0
,Hierarchize
(
{
[Date].[Calendar].[Month].&[2010]&[4].Lag(6)
:
[Date].[Calendar].[Month].&[2010]&[4]
,Generate
(
{
[Date].[Calendar].[Month].&[2010]&[4].Lag(6)
:
[Date].[Calendar].[Month].&[2010]&[4]
} AS S
,Ancestors
(
s.CurrentMember
,3 //<<< distance in advwrks between month and year levels
)
)
}
) ON 1
FROM [Adventure Works];
Returns: