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Frequent Visitor

## Strange Spike in Line Chart when using Rolling Year Formula.

there is a strange Spike at the End of a Line Chart when using a Rolling Year Formula and going Down to any Level on the Chart below Years. I've tried

1 Adjusting the X Axis to filter days Before Current Date.

2) Using a date Filter  for the Visual based on final date in Data Set. Ive Never had a problem with this in Excel (i.e  Rolling- year formula, at a MM_YYYY level this is the Rolling year Formula I am using:

`MIC_RY1_all = CALCULATE(Sum(FACT_MIC[Units]),DATESBETWEEN(DATE_DIM[Date],NEXTDAY(SAMEPERIODLASTYEAR(LASTDATE(DATE_DIM[Date]))),LASTDATE(DATE_DIM[DATE])))`

Rolling Year at a QQYY level:

At a Year level , no spike:

Rolling year formula at a sub-year level in Excel ( No issue )

1 ACCEPTED SOLUTION

Accepted Solutions
Community Support Team

## Re: Strange Spike in Line Chart when using Rolling Year Formula.

Hi @aklaur ,

To use Time intelligence function, Continuous time is necessary for most time. you can try to generate a calendar table and using in your DAX.

If it doesn't meet your requirement, kindly share your sample data and excepted result to me if you don't have any Confidential Information. Please upload your files to One Drive and share the link here.

Best regards,

Community Support Team _ DongLi
If this post helps, then please consider Accept it as the solution to help the other members find it more

Community Support Team _ Dong Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
3 REPLIES 3
Super User III

## Re: Strange Spike in Line Chart when using Rolling Year Formula.

Hi @aklaur

Can you share the pbix, or a simplified version that reproduces the issue?

Community Support Team

## Re: Strange Spike in Line Chart when using Rolling Year Formula.

Hi @aklaur ,

To use Time intelligence function, Continuous time is necessary for most time. you can try to generate a calendar table and using in your DAX.

If it doesn't meet your requirement, kindly share your sample data and excepted result to me if you don't have any Confidential Information. Please upload your files to One Drive and share the link here.

Best regards,

Community Support Team _ DongLi
If this post helps, then please consider Accept it as the solution to help the other members find it more

Community Support Team _ Dong Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Frequent Visitor

## Re: Strange Spike in Line Chart when using Rolling Year Formula.

Yes thank you for the Tip, which seems obvious to me now. I have a Calendar table called DATE_DIM but I didn't specfically designate it as a Calendar Table. This solved the Spike problem. thank you!

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