SSAS MDX YTD Last Value only - ssas

Question

Please could you assist:
fact table
a) Actuals
Measure: Weekly Inflow this is the field within the underlying database table
[Measures].[Weekly Inflow]
I calculate YTD Inflow using the following
Aggregate
(
PeriodsToDate
(
[Period End].[Period End].[Year],
[Period End].[Period End].CurrentMember
),
[Measures].[_Weekly Inflow]
)
I want to display a new calculated measure which will show me a single YTD Inflow value only for the very last record where an actual inflow is shown.
This must not be repeated as a running total just a single value. Please see the example attached:
Screen shot
How can i achieve this using a calculated measure? Please could you provide an example?
Date dimension: See screen shot
Please see screen shot 3 after adding the MDX. The values with the pink background should not be shown. Those with a green background need to be presented:Screen Shot 3
Screen shot 4: Additional Measure
Screen shot 5: Screen shot 5
Screen Shot 6
Thank you

Answer 1

So you need to run BottomCount (1 row) on your [Measures].[_Weekly Inflow] to get the last tuple that has a non null value of _Weekly Inflow,this will be a calculated measure .Next, in your YTD measure add a case that checks the current value of the [Period End].[Period End] user hierarchy to the only value of the above measure. I dont have a sample cube at hand but the query structure will be like below.
with member Measures.[NewColumn]
as
(bottomcount(
nonempty(
existing
{([Date].[Date].[Date].members)}
,[Measures].[_Weekly Inflow]),
1
).item(0).Name
member
Measures.[YTD]
as
case when [Period End].[Period End].currentmember.name=Measures.[NewColumn] then
Aggregate ( PeriodsToDate ( [Period End].[Period End].[Year], [Period End].[Period End].CurrentMember ), [Measures].[_Weekly Inflow] )
else
null end
Edit
with member Measures.[NewColumn]
as
(bottomcount(
filter(
existing
{([Date].[Date].[Date].members)}
,[Measures].[_Weekly Inflow]>0),
1
).item(0).Name
member
Measures.[YTD]
as
case when [Period End].[Period End].currentmember.name=Measures.[NewColumn] then
Aggregate ( PeriodsToDate ( [Period End].[Period End].[Year], [Period End].[Period End].CurrentMember ), [Measures].[_Weekly Inflow] )
when
[Period End].[Period End].currentmember.name=[Period End].[Period End].defaultmember then Aggregate ( PeriodsToDate ( [Period End].[Period End].[Year], [Period End].[Period End].CurrentMember ), [Measures].[_Weekly Inflow] )
else
null end
Edit
member
Measures.[YTD]
as
case when [Period End].[Period End].currentmember.name=Measures.[NewColumn] then
Aggregate ( PeriodsToDate ( [Period End].[Period End].[Year], [Period End].[Period End].CurrentMember ), [Measures].[_Weekly Inflow] )
when
[Period End].[Period End].currentmember.name="Feburary 2018" then Aggregate ( PeriodsToDate ( [Period End].[Period End].[Year], [Period End].[Period End].CurrentMember ), [Measures].[_Weekly Inflow] )
else
null end