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Helper II

## Measure to Deal with Negatives in Calculation

In a previous post:-

https://community.fabric.microsoft.com/t5/Desktop/Use-Previous-Value-In-Column-In-Calculation/m-p/32...

I was kindly supplied with a measure to do the first calculation I need.

Measure =
var _a = ALLSELECTED('Table'[Work Type])
var _b = MAX('Table'[Row])
return SUMX(FILTER(ALL('Table'),[Work Type] in _a&&[Row]<=_b),'Table'[Amount]-'Table'[Available])

Giving the results in the example below
row 1 Measure is Amount - Available  (12 - 2160 = -2148.00)
row 2 Measure is Row 1 Measure (-2148) + Row 2 Amount (85) - Row 2 Available (2160) = -4223
row 3 Measure is Row 2 Measure (-4223) + Row 3 Amount (1660) - Row 3 Available (2106) = -4723

I need an additional column which deals diffrently with negatives in the measure column. Therefore the 'New Measure' column instead of -negative numbers uses a 0 and only uses positive numbers in the calculation. See illustration below.

I hope this makes sense.

Thanks

Pete

1 ACCEPTED SOLUTION
Super User

That's unfortunately exactly the point. The result cannot be modified by filters.

4 REPLIES 4
Super User

That selective addition is not something you can do in DAX.  You can use List.Accumulate in Power Query for this but that will result in a column, not a measure.

Helper II

Thanks @lbendlin . Not sure what list.Accumaulate is, will have a look. I'm not sure it matters if the result is a column so long as it does the calcultion and can be filtered by a slicer.

Super User

That's unfortunately exactly the point. The result cannot be modified by filters.

Helper II

Thanks for letting me know. I'll have to think of another way of doing it.

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