How to make 2 measures ( measures of the current Year VS Year -1) in same graph

[benz-ait]

Hello

I would like to know how to put in the same Graphic the elements below:

 dimension:  Date ( Year/Month)

measure 1: Nb of Visitors of Year N ( the green line)

measure 2: Nb of Visitors of Year  N-1  ( 2018) ( the blue line)

as you can see in the screen below

BR

[Lisa_P]

Set analysis is the answer.
You should really only show the Month as dimension in this case.
Would be good if you had a year field as well.
IF you don't have them, you can derive them using the Year and Month functions when you load your data in either the Data Load Editor or the Data Manger.
Guessing your field names it should look something like this:
Measure 1: Sum({<Year={$(=Max(Year))}>}[Nb of Visitors])
Measure 2: Sum({<Year={$(=Max(Year)-1)}>}[Nb of Visitors])

[benz-ait]

Hello Lisa and thank you for your response

I juste tried your solution and it's KO

when I select for exemple on the calender 10/2019

the expect resultat should be like this

Dimension: oct 2019

Measure 1 : Nb of Visitors of oct 2019 ( 3450 ) 

Measure 2: Nb of Visitors of oct 2018 (500  ) 

but here what I get :

Dimension: oct 2019

Measure 1 : Nb of Visitors of oct 2019  ( 3450 ) 

Measure 2: 0  ( it should be 500 ) 

do you have any other propostion please ?

[dwforest]

Measure 1: Sum({<Year={$(=Max({1} Year))}>}[Nb of Visitors])
Measure 2: Sum({<Year={$(=Max({1} Year)-1)}>}[Nb of Visitors])