Use DAX Measures as Categories

Yes, you can yes DAX measures as categories. While this may not be an out of the box feature, this is possible. 

I find this especially useful when switching from one measure  to another using a slicer and in visualizing the measures in a column chart wherein I could assign them to a legend.

For this post I used the VAN Arsdel sample workbook I modified a bit.

I created the following measures:

Total Gross Sales = 
SUM ( financials[Gross Sales] )

Total Discounts = 
SUM ( financials[Discounts] )

Total Net Sales = 
SUM ( financials[ Sales] )

Total Cost of Goods Sold = 
SUM ( financials[COGS] )

Total Profit = 
SUM ( financials[Profit] )

and then a disconnected (no relationship with Fact) table I call Financials Summary Table.

Financials Summary Table = 
DATATABLE (
    "Category", STRING,
    "Type", STRING,
    "Index", INTEGER,
    {
        { "Gross Sales", "Non-Deduction", 1 },
        { "Discounts", "Deduction", 2 },
        { "Net Sales", "Non-Deduction", 3 },
        { "Cost of Goods Sold", "Deduction", 4 },
        { "Profit", "Non-Deduction", 5 }
    }
)

If you are not comfortable with using this formula, you may use Enter Data though it would be good to get exposed to it.  The DAX formula above creates a calculated table containing three columns: Category, Type and Index. I added an index column for two reaons: 

• to use it as a column to sort the Category column by
• to simplify the creation of a measure that will call the five previously created measures.

To call the five measures, I used this formula:

Financials = 
VAR SelectedMeasure_ =
    SELECTEDVALUE ( 'Financials Summary Table'[Index] ) //you may use any function that returns just one value
RETURN
    IF (
        HASONEVALUE ( 'Financials Summary Table'[Index] ),
        SWITCH (
            SelectedMeasure_,
            1, [Total Gross Sales],
            2, [Total Discounts],
            3, [Total Net Sales],
            4, [Total Cost of Goods Sold],
            [Total Profit]
        )
    )

If I did not add an index column, I would have entered each row value in my calculated table Category column in the formula instead of the numbers 1 to 4.

I created another measure to show percentage of a measure over total gross sales:

Finacials % = 
DIVIDE ( [Financials], [Total Gross Sales] )

Since the Financials measure references the other measures from financials table, it will still get crossfiltered by the columns in the latter

Here's my sample PBIX: https://drive.google.com/open?id=1UNafWJRndZJuDhzRpNH1tKZVIdBeWov9