Current year volume vs previous 5 year average volume

[JamesBockett]

Hi Everyone

What I have:

I have a sales data table with a row for each sale.

I have a calendar lookup table with a row per date.

I have a 'countrows' measure that calculates how many rows are in the table, giving me the total number of sales.

I have a line graph showing the total number of sales over a period of time.

Goal:

I would like to be able to display total number of sales, by month, for the current year on a line graph, with the average number of sales, by month, for the previous years on the same graph. Any suggestions on how to get the past 5 years average would be appreciated.

Below is an example of what I am looking to achieve.

[Jihwan_Kim · Accepted solution]

Hi,

Please check the below picture and the attached pbix file.

Orders count: =
CALCULATE ( COUNTROWS ( Sales ), Dates[Year] = MAX ( Dates[Year] ) )

Orders count prev 5 years avg: =

VAR selectedyear =

MAX ( Dates[Year] )

VAR previous5years = selectedyear - 5

VAR newdatetable =

CALCULATETABLE (

VALUES ( Dates[Year] ),

FILTER (

ALL ( Dates ),

Dates[Year] < selectedyear

&& Dates[Year] >= previous5years

)

)

RETURN

AVERAGEX ( newdatetable, [Orders count:] )

[JamesBockett]

@Jihwan_Kim You're a genius! It worked so, thank you very much for your help.

As a bonus, please could you explain the DAX to me, for the 5yr average? I like to have a vague understanding of what is going on so I know for future.

Many thanks

James