Time series with proxy label

[ChrisH]

I'm working on some time series data that uses a PREVIOUSYEAR function for YoY change at the year level. Keeping the year as a date type lets me do the previous year calculation but the x-axis label is obviously the year. What I'd like to be able to do is keep the results as is but show the academic year on the x axis instead of the year label. So 2016 would be ACAD16/17 and 2017 ACAD17/18 etc. I don't need to worry about the year start/end as it's just a single date I'm looking at in each year (entry date of students).

Does anyone know of a way that lets me display a proxy value on the axis label or a way of working with ACAD16 while keeping the structure attributed by a date format?

[FreemanZ · Accepted solution]

As you are working on PREVIOUSYEAR, so supposing you already have a good Date table, you just need to add a calculated column in your Date table, the code is like this:
ACAD =
"ACAD"&YEAR(Date[Date])&"/"&(YEAR(Date[Date])+1)
Then put the Date[ACAD] to your X axis.

[ChrisH]

Thanks Freeman. This worked a treat!

for anyone else looking to do similar. If you want the time series to be in order you'll also need to sort your date table by the ACAD year column. similar to this

https://community.powerbi.com/t5/Desktop/Month-Name-in-sorting-order/m-p/152006

[speedramps]

Try this example for fiscal year and adapt it for accademic year ...

Click new table and

Calendar = CALENDAR(DATE(2020,01,01),DATE(2023,12,31))

Add new column  ...

 Fiscal year =

// the uk fiscal years commences on 6th April

VAR fiscalstartmonth = 05

VAR fiscalstartday = 06

RETURN

SWITCH( TRUE(),

MONTH('Calendar'[Date]) < fiscalstartmonth, YEAR('Calendar'[Date]) - 1,

MONTH('Calendar'[Date]) > fiscalstartmonth, YEAR('Calendar'[Date]),

DAY('Calendar'[Date]) < fiscalstartday, YEAR('Calendar'[Date]) - 1,

YEAR('Calendar'[Date]))

Add new column ...

Fiscal year offset =

// the uk fiscal years commences on 6th April

VAR fiscalstartmonth = 05

VAR fiscalstartday = 06

VAR todayyear = YEAR(TODAY())

VAR todaymonth = MONTH(TODAY())

VAR todayday = DAY(TODAY())

VAR todayfiscalyear =  

SWITCH( TRUE(),

todaymonth < fiscalstartmonth, todayyear  - 1,

todaymonth > fiscalstartmonth, todayyear ,

todayday < fiscalstartday, todayyear  - 1,

todayyear)

RETURN

'Calendar'[Fiscal year] - todayfiscalyear

Add 1:M relationship from calendar date to uour fact table date.

Add news measures ..
Sales = SUM(tablename[amount])

Sales this fiscal year = CALCULATE( Sales, 'Calenadr'[Fiscal year offset] = 0)

Sales previous fiscal year = CALCULATE( Sales, 'Calenadr'[Fiscal year offset] = -1)

Please do all these free power BI calendar traing courses, escepcually the one about offsets

Calendar Table training

All Power BI reports use dates, so this training is really important. 

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[ChrisH]

Hi Speedramps,

I've got the offsets sorted out already. My question is more related to the labelling. I can't use the ACAD date column as it's not a date series but I do want it as an x-axis label. Does that make sense?