Help with Var function filtering by from most recent date of data point

[brendanoshea]

I am trying to filter data points based on their average value for the past 28 days. Right now the function I have is taking the first date in my date range and filtering the 28-day average from that point. Where I want my function to filter the 28-day average working back from the date of my most recent data point in the data range, rather than the oldest data point in my date range. You can see in the picture attached the yellow line under jump height labeled 13.58 is taking the average from the oldest two data points in the date range (13.5,13.66) on the line graph rather than the most recent data point of 12.95. Which in this case since there is only one data point in the past 28 days the yellow line under the jump height gague should be represented by 12.95 if the function was working the way I wanted it to.

[v-zhangti]

Hi, @brendanoshea 

Can you provide sample data for testing? Sensitive information can be removed in advance.

Best Regards,

Community Support Team _Charlotte

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[brendanoshea]

I am just trying to make a 28 day rolling average, this is my DAX code but for some reason I get a blank return when I run it. I know there are data points in the data range I am giving it but it keeps giving me a blank no matter what function I use.