Force the default selection of timeline slicer to latest 4 weeks

[Anonymous]

I have searched everywhere but was able to get solutions for only force selection by current date.

Requirement : I have a PowerBI report where all the pages have a timeline slicer (Timeline 2.4.0 visual) which allows the user to select year, month, quarter and weeks. I want the default state of this slicer to be set to the latest 4 weeks available (i.e. when the user opens the report, they will see just the last 4 weeks & then they can change it as required).

Caveat 1 : The solutions I noticed catered to latest 4 weeks from the current week (using system date). So if it is 21st Dec today, the solutions I see would give me this week & the last 3 weeks prior to this 21st Dec week. But what I need is the last 4 weeks of my data which might not even have data till the current date. So if my dataset has data till 11th Oct, I want the 11th Oct week plus last 3 weeks before that.

Caveat 2 : Most of the solutions I have seen uses DAX formulas to filter out only the last 4 weeks. However, this won't work for me because many of my visuals have current vs previous period comparisons. So filtering out the previous weeks to keep only the latest 4 weeks will show blanks in all the "previous period" visuals (See images below).

The above image shows the correct visual when I manually select the last 4 weeks. I want this to be the default state whenever users open the dashboard.

Is there any way to acheive this in PowerBI?

[parry2k]

@Anonymous there is no default selection, you just have to make it happen in the measures. 

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[amitchandak]

@Anonymous , One of the way with week rank in date table

Last 4 weeks = CALCULATE(countrows('Table'), FILTER(ALL('Date'),'Date'[Week Rank]>=max('Date'[Week Rank])-4 && 'Date'[Week Rank]<=max('Date'[Week Rank]))))

same period based on date range
Last Period =
var _max =maxx(date,date[date])
var _min =maxx(date,date[date])
var datediff1 = datediff(_min,_max,day)
var _maxX = _max-datediff1
var _minX = _min -datediff1
return
CALCULATE(SUM(Sales[Sales Amount]),filter(all(date,date[date]<=_maxX &&date[date]>=_minX)))

new columns in date table
Week Start date = 'Date'[Date]+-1*WEEKDAY('Date'[Date],2)+1
Week End date = 'Date'[Date]+ 7-1*WEEKDAY('Date'[Date],2)
Week Rank = RANKX(all('Date'),'Date'[Week Start date],,ASC,Dense)
OR
Week Rank = RANKX(all('Date'),'Date'[Year Week],,ASC,Dense) //YYYYWW format

[Anonymous]

I have already implemented the same period/last period concept. I want something for my timeline slicer. I'm not sure if the last 4 weeks can be set for the force selection part

[Judy101]

was this resolved? If you have found a solution to this, request you to share here. Thanks!