Help with volume differences calculation

[Human]

Hi everyone,

i would like to calculate for the total differences in volume used for each variable a,b and c. Each volume difference will refer to the 'TRUE' and 'FALSE' state of each variable. The yellow column is the intended result that I am expecting but I'm getting nowhere near to that.

Can someone please help

[CoreyP]

Can you please try to clarify? I'm not understanding at all what you're hoping to achieve. I see that 704-667 = 37, and 740 - 630 = 110 , etc. But I can't figure out for the life of me what logic you want to apply and when.

[Human]

So I'm trying to create a calculated column/dax to calculate the differences between the volume column which would be referring to the start and stop of the 'TRUE' state of variable A,B and C. So for example for variable C, for the 'TRUE' state would start at volume 630 and ended at 594. So the result I intended to be returned would be the difference between 630 and 594.

Sorry if I was not being clear. I'm quite new to Power BI.

[CoreyP]

Oh, no worries. Thanks for clarifying. Is there like an end objective? There's likely a more effective way to model/structure your data to accomplish what you're looking for without writing a weird DAX column.

[Human]

Thank you for your understanding. So for my end objective, I intend to be able to calculate the total volume used for each variable and eventually, the total/overall volume use.

[CoreyP]

And what exactly are these variables? They can just be either true or false based on a calculation or something?

[Human]

From my understanding, the variable is some kind of machine that utilizes the volume and the value of 'TRUE' and 'FALSE' is the status of the machine state whether it is in use or not. TRUE as in-use indicator and FALSE as when the machine is not in-use.