## Desktop

Frequent Visitor
Posts: 11
Registered: ‎01-17-2018

# Need Help: Persistent Moving/Rolling Average

Is there a DAX formula to persist, or hold, the lastest value of the rolling/moving average whenever data points are over and to extend it thru time?

Accepted Solutions
Regular Visitor
Posts: 39
Registered: ‎07-09-2017

## Re: Need Help: Persistent Moving/Rolling Average

@J-Saw I'm sorry for that.
I'll try and see if I can get LastNonBlank to work. I propose an alternative solution.
Get the lastdate where price/box is not blank. Look up the price/box for that date.
```=
VAR lastPriceDate =
CALCULATE (
MAX ( Table1[Date] );
ALLEXCEPT ( Table1; Table1[Product] );
NOT ( ISBLANK ( Table1[Price/Box] ) )
)
VAR LastPrice =
CALCULATE (
MAX ( Table1[Price/Box] );
ALL ( Table1 );
VALUES ( Table1[Product] );
Table1[Date] = lastPriceDate
)
RETURN
IF ( ISBLANK ( Table1[Price/Box] ); LastPrice; Table1[Price/Box] )```

Cheers,
Pedro

All Replies
Community Support Team
Posts: 2,535
Registered: ‎02-06-2018

## Re: Need Help: Persistent Moving/Rolling Average

Hi

Maybe something like LASTDATE() or LASTNONBLAMK(), if can't meet your requirement, please share some sample data and clarify more details about your requirement or logic.

Regards,

Jimmy Tao

Frequent Visitor
Posts: 11
Registered: ‎01-17-2018

## Re: Need Help: Persistent Moving/Rolling Average

[ Edited ]

@v-yuta-msft

Date                    Product   Boxes       Prices      Price/Box

 2018-01-01 1 7 10 \$1.43 2018-01-01 2 5 12 \$2.40 2018-02-01 1 9 10 \$1.11 2018-02-01 2 6 12 \$2.00 2018-03-01 1 2018-03-01 2

So basically would be having the Price/Box for 2018-03-01 using the most recent Price/Box for product 1 and 2.

Regular Visitor
Posts: 39
Registered: ‎07-09-2017

## Re: Need Help: Persistent Moving/Rolling Average

If what you're looking for is a calculated column, you can do the following:

```=
IF (
ISBLANK ( Table1[Price/Box] );
CALCULATE (
LASTNONBLANK ( Table1[Price/Box]; 1 );
ALLEXCEPT ( Table1; Table1[Product] )
);
Table1[Price/Box]
)```

Last Price

To make the "Last Price" clear I chose to put in datetime information.

Highlighted
Frequent Visitor
Posts: 11
Registered: ‎01-17-2018

## Re: Need Help: Persistent Moving/Rolling Average

@Gravanita

Thanks. This is very helpful. However is not showing the most recent(February) Price/Box.

Regular Visitor
Posts: 39
Registered: ‎07-09-2017

## Re: Need Help: Persistent Moving/Rolling Average

@J-Saw I'm sorry for that.
I'll try and see if I can get LastNonBlank to work. I propose an alternative solution.
Get the lastdate where price/box is not blank. Look up the price/box for that date.
```=
VAR lastPriceDate =
CALCULATE (
MAX ( Table1[Date] );
ALLEXCEPT ( Table1; Table1[Product] );
NOT ( ISBLANK ( Table1[Price/Box] ) )
)
VAR LastPrice =
CALCULATE (
MAX ( Table1[Price/Box] );
ALL ( Table1 );
VALUES ( Table1[Product] );
Table1[Date] = lastPriceDate
)
RETURN
IF ( ISBLANK ( Table1[Price/Box] ); LastPrice; Table1[Price/Box] )```

Cheers,
Pedro