DAX alternate value is not aggregating total

[Surveys]

I have created the below matrix table. One of the measures created (LISA BG/AG Ratio) was returning blank values due to the measure being unable to divide by 0. I changed the DAX to provide an alternate value of 0. It seems that the alternate values are not aggregating with the other values in the column to provide an accurate Total amount (should be 0.8 not 2.3). I imagine this requires a little more advanced DAX than I have used. DAX syntax:

LISA BG/AG Ratio =

DIVIDE(

    SUM('FormCPEEndOfDay'[LISABelowGroundLeaks]),

    SUM('FormCPEEndOfDay'[LISAAboveGroundLeaks]),0

)

Any help is appreciated.

[dedelman_clng · Accepted solution]

Hi @Surveys  - can you explain further why you expect the "Total" row to show 0.8 instead of 2.3?  Your formula is BG/AG, which on the Total row is 25/11 = 2.3

PowerBI/DAX doesn't sum up the way Excel pivot tables do - measures are calculated in the context of the total data set - so it is acting correctly based on information you have given so far.

Hope this helps

David

[Surveys]

I was looking at it the wrong way. Thanks.