Computation Error in DAX

[jwininger]

I am working on a forecasting dashboard for my business.  Basically I take 5 week trend, 13 week trend, YTD trend, and last years trend and get a weighted trend.  I then take that weighted trend * units sold for the next 13 weeks from last years sales.  The issue is DAX is not computig it correctly.  See below.

Results of computation:

Formula to calculate forecast:

Thanks in advance.

Justin

[v-lid-msft]

Hi @jwininger ,

How about the result after you follow the suggestions mentioned in my original post?Could you please provide more details about it If it doesn't meet your requirement?

Best regards,

Community Support Team _ Dong Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[v-lid-msft]

Hi @jwininger ,

We can try to use the following formula to meet your requirement

13WeekForecasr =
VAR d =
    MAX ( 'Calendar'[Date] )
VAR ld =
    DATE ( YEAR ( d ) - 1, MONTH ( d ), DAY ( d ) )
RETURN
    CALCULATE (
        [Net Sales],
        FILTER ( ALL ( 'Calendar' ), AND ( [Date] >= ld, [Date] <= ld + 13 * 7 ) )
    )
        * CALCULATE (
            [Weighted Trend],
            FILTER ( ALL ( 'Calendar' ), AND ( [Date] >= ld, [Date] <= ld + 13 * 7 ) )
        )

If it doesn't meet your requirement, kindly share your sample data and expected result to me if you don't have any Confidential Information. Please upload your files to One Drive and share the link here.

Best regards,

Community Support Team _ Dong Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[amitchandak]

The information you have provided is not making the problem clear to me. Can you please explain with an example. If possible please share a sample pbix file after removing sensitive information.

Can you, also provide the formula that you wanted not the DAX expression.
Thanks