topic Re: Year over year index in table/matrix in DAX Commands and Tips

Year over year index in table/matrix

Dirkdr — Tue, 16 May 2023 15:35:19 GMT

Hello!

I would like to create multiple year-over-year indexes to compare a numerical value for a given period with the same period a year before. This also works well for column and line charts but I can't manage to use them in tables or matrices. My data kinda looks like the following:

date	device	country	costs	sales
11/1/2021	tablet	US	50	250
11/1/2021	desktop	NO	45	300
11/1/2021	mobile	BE	30	350
11/1/2021	mobile	CA	5	200

The following DAX formula to create a measure works really well on a card or for example line or column charts:

Costs YoY Index = DIVIDE(SUM(data[costs]), CALCULATE(SUM(data[costs]), DATEADD(data[date], -1, YEAR))) * 100

However, when I try to create a table or matrix that shows something like the following:

Country	Costs	Costs YoY Index
AE	5500	108
AO	6540	113
AR	7839	115
AT	2300	85

I get the error: "Can't display the visual. See details" - MdxScript(model)(4,124) Calculation error in measure '_Calculations[Costs YoY Index]: Function 'DATEADD' expects a contiguous selections when date column is not unique, has gaps or contains time portion.

Does somebody know how to solve this?

Great thanks!

Re: Year over year index in table/matrix

Anonymous — Thu, 18 May 2023 02:15:20 GMT

Hi Dirkdr ,

You can add date to the visual.

The measure is correct! Just ensure that the date field in the visual .

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Re: Year over year index in table/matrix

Dirkdr — Thu, 18 May 2023 07:29:59 GMT

Hi Anonymous,

Thank you for your reply! Adding the date field indeed fixes the error.

However, my table gets very big when I add the date field as for every country and every date combination it is listed in the table. Ideally, I only want to show the following:

Country	Costs	Costs YoY Index
AE	5500	108
AO	6540	113
AR	7839	115
AT	2300	85

While when I add the date I get something like this:

Country	Date	Costs	Costs YoY Index
AE	11/1/2021	250	102
AE	11/2/2021	320	111
AE	11/3/2021	400	85
AE	11/4/2021	100	120

Thanks a lot!

Re: Year over year index in table/matrix

Anonymous — Thu, 18 May 2023 07:43:19 GMT

Hi Dirkdr ,

You can modify the measure.

Costs YoY Index = var _1=year(maxx(all(data),date[date])) return DIVIDE(SUM(data[costs]), CALCULATE(SUM(data[costs]), year[date[date]=_1-1)) * 100

Or you can change the date hierarchy to the month.

If it does not help, please provide more details with your desired output and pbix file without privacy information (or some sample data) .

Best Regards
Community Support Team _ Rongtie

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Re: Year over year index in table/matrix

Dirkdr — Thu, 18 May 2023 08:19:30 GMT

Hi Anonymous ,

Thanks again for your reply.

I can now indeed add it to my table. Unfortunately however the numbers don't make sense anymore now. Also changing the hierachy to month doesnt help as I get the same original error.