Select a Table value based on a DAX function

[driplytics]

Hey,

i have GDP data with colunms : Country, GDP, Year.

i used a Dax functions to calculate GDP Growth %, and ranked it In the Growth Rank Column.

Here's what i want to do :

I want to show the Year of highest Growth %  in a Card Visual (from the Table, it shows 1981), but can't seem to know how best to do it.

This is a table visual i created on power bi.

Table Visual

Apart from Year and GDP Column every other Column is calculated using DAX.

Here are the formulas :

LY GDP =

var _Ly = LASTNONBLANK('Countries GDP 1960-2020'[Year],1) - 1

var _1 = CALCULATE([GDPc], ALL('Countries GDP 1960-2020'[Year]),

 'Countries GDP 1960-2020'[Year] = _Ly )

return

_1

Growth % = DIVIDE((sum([GDP]) - [LY GDP] ),[LY GDP])

Growth Rank = RANKX ( ALL ( 'Countries GDP 1960-2020'[Year] ),[Growth %] )

I have Gotten tremendious support from here, and i appreciate your responses.

[Jihwan_Kim · Accepted solution]

Hi,

I am not sure how your data model looks like, but please try to put the below measure into a card visualization.

expected measure for card visual: =
SUMMARIZE (
    FILTER (
        ADDCOLUMNS (
            ALL ( 'Countries GDP 1960-2020'[Year] ),
            "@ranking", [Growth Rank]
        ),
        [@ranking] = 1
    ),
    'Countries GDP 1960-2020'[Year]
)

[driplytics]

This is the Solution !!!

it worked. 

Thanks for Helping Out.

[vapid128]

add colnum

LastYearGDP = lookupvalue('Countries GDP 1960-2020'[GDP], 'Countries GDP 1960-2020'[Year], 'Countries GDP 1960-2020'[Year] - 1, 'Countries GDP 1960-2020'[Country], 'Countries GDP 1960-2020'[Country])

add measure

BestGDP = maxx(values( 'Countries GDP 1960-2020'[Year]), calculate(DIVIDE(sum('Countries GDP 1960-2020'[GDP])-sum('Countries GDP 1960-2020'[LastYearGDP]),sum('Countries GDP 1960-2020'[LastYearGDP]))