How to get top value, then related value

[tim_g]

I have a column of country codes that can occurs many times (us, ca, us, us, au, etc). I have another column with 2 words of text describing things about the country (nice + sunny, cold + rainy, etc):

1, us, warm + sunny 

2, ca, cold + icy

...

In another table (related by id) I have a measure that calculates the growth (current month count - prev month count) based on the submitted date:

1, 2nd Jan 2016

2, 4th Dec 2016

...

If I do a chart with: 

Axis:    CountryCode

Value:  Growth 

Then Order by growth desc, then select the top value ('ca', 120%), I can have a word cloud that shows the top word combination that people used to describe 'ca'. If I limit the word cloud to a single result, it shows the most common combination, 'cold + snowy'. 

I want to do the same, but using DAX. How to I extract this value 'cold + snowy' without having the user have to actually click the top value in the chart? I.e I want to show in the middle of the report, the most common words used in the fastest growing country.

Thanks!

[v-ljerr-msft · Accepted solution]

Hi @tim_g,

According to your description, you should be able to use TOPN Function (DAX) and SUMMARIZE Function (DAX) to create a measure to get the top value in this scenario. The sample below is for your reference.

I assume you have the two tables like below.

Table1

Table2

1. Use the formula below to create a calculate table to get the "Id" with top Growth.

TopTable = 
TOPN (
    1,
    SUMMARIZE ( Table2, Table2[Id], "TotalGrowth", SUM ( Table2[Growth] ) ),
    [TotalGrowth]
)

2. Then you should be able to use the formula below to create a measure to get the top value and show it within a Card visual on the report.

TopValue = 
CALCULATE (
    FIRSTNONBLANK ( Table1[Description], 1 ),
    FILTER ( Table1, Table1[Id] = MAX ( 'TopTable'[Id] ) )
)

Here is the sample pbix file for your reference.

Regards