Extremely slow median measures

Hi

I'm having a problem with extremely slow median measures.

I've created a named set of all record IDs and wrote the measure as Median( [All Records], [Measures].[Age] ). When I drop a dimension into one of the axes, it takes a very long time to calculate the median even at the top level of the hierarchy, and I suspect it's computing the median for all the members of that dimension, even before I've drilled down into them.

Anyone know a better method for this?

Your formula computes Median for all records always, regardless of the selection in Records dimension.|||

Sorry Mosha, I don't quite follow. I need this to be a generic measure that will return the median of any cell in the client browser. Since median cannot be preaggregated, I thought the only way to do this was to take the median of the set of all records in the current cell. The other option I had explored went something like this:

Median (

{ ( Axis(0)(0)( Axis(0)(0).Count - 1 ).Dimension.CurrentMember.All, [All Records].[ ID ].[ ID ] ) },

[Measures].[Age]

)

But this didn't work at all.

|||Sorry, this time I don't quite follow. What exactly do you mean by the following: "I need this to be a generic measure that will return the median of any cell in the client browser". Median of what ? Perha[s you could illustrate with couple of examples.|||

My mistake... Should have said median of a measure (e.g. age) within any cell in the spreadsheet. For example, if I have a 2 x 2 table with Male and Female as columns and marital status Single and Married as rows, I'd be showing the median age in each of the 4 cells. Other times, users would be interested in the median age for other combinations of factors, say Gender and Cancer, or Cancer and Socioeconomic Status, but they shouldn't have to select a different median measure for each combination. Sort of like a percentage/proportion against any dimension selected on the row/column axis, as discussed in the following post:

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=720160&SiteID=1

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If you are guaranteed to always have two axes, then something like that may work

Median(CrossJoin(Axis(0), Axis(1)), Measures.[Age])

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Thanks Mosha, but no luck with that one either. There's probably no other way around this; that is, other than using the Fact Table primary key (Record ID) to select the set of all individual age values.

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Then I again don't understand your requirements :( Based on what you wrote before:

> For example, if I have a 2 x 2 table with Male and Female as columns and marital status Single and Married as rows, I'd be showing the median age in each of the 4 cells.

The formula that I wrote computes then median of these 4 cells and places it into each one of these 4 cells. I have verified it with AdventureWorks which has Gender and Marital Status attributes...