Rolling calculation for previous 12 months

[sailorman]

I have a cumulative hours (last 12 months) caculator DAX as follows:

Cumulative HOURS = CALCULATE( SUM('Unit'[Hours Worked]),

DATESINPERIOD('Unit'[Month],

LASTDATE('Unit'[Month]),-12,MONTH

))

This will give me the cumulative value for last 12 months, say June 2021 to May 2022.

I now want to plot this agaist cumulative of previous 12 months, that is July 2020 - June 2021. How should I modify DAX to get these values. I want both line graphs in the same plot for comparison. How do I go about doing that?

Thanks in advance!

[amitchandak · Accepted solution]

@sailorman , if you want to 12 months on axis

Rolling 12 Sales =
var _max = maxx(allselcted(date),date[date]) // or today()
var _min = date(year(_max), month(_max)-12,1)
return
CALCULATE(SUM(Sales[Sales Amount]),filter(date, date[date] <=_max && date[date] >=_min))

in case you select one month and want to display 12 months, you need an independent date table

//Date1 is independent Date table, Date is joined with Table
new measure =
var _max = maxx(allselected(Date1),Date1[Date])
var _min = eomonth(_max, -12) +1
return
calculate( sum(Table[Value]), filter('Date', 'Date'[Date] >=_min && 'Date'[Date] <=_max))

Need of an Independent Date Table:https://www.youtube.com/watch?v=44fGGmg9fHI

[amitchandak · Accepted solution]

@sailorman , if you want to 12 months on axis

Rolling 12 Sales =
var _max = maxx(allselcted(date),date[date]) // or today()
var _min = date(year(_max), month(_max)-12,1)
return
CALCULATE(SUM(Sales[Sales Amount]),filter(date, date[date] <=_max && date[date] >=_min))

in case you select one month and want to display 12 months, you need an independent date table

//Date1 is independent Date table, Date is joined with Table
new measure =
var _max = maxx(allselected(Date1),Date1[Date])
var _min = eomonth(_max, -12) +1
return
calculate( sum(Table[Value]), filter('Date', 'Date'[Date] >=_min && 'Date'[Date] <=_max))

Need of an Independent Date Table:https://www.youtube.com/watch?v=44fGGmg9fHI

[sailorman · Accepted solution]

Hi Thanks. I figured out a way to avoid using seperate date table by using following variables

Cumulative HOURS previous year =

VAR CurrentDate =  

    MAX('Unit'[Month])

VAR StartMonth =

    CurrentDate - 365

Return

    CALCULATE( SUM('Unit'[Hours Worked]),

        DATESINPERIOD('Unit'[Month],

        StartMonth,-12,MONTH

        )

        )