I want to do data comparison for Year over Year (year start from oct 2017 to sept 2018) but this year we are extending our year til 12/31. so we have 15 months. In my report i have Year over year but it wont work now as Oct 1 in 2017 is in same year so i wanna change it to compare with date so last year data at oct 1 to comapre this year oct 1. Please suggest how can i do it. Thanks
I would check the following post in the Tableau Community for any questions about date calculations as a first resource: FAQ: To Date Calculations
Additionally, posting a workbook can help users more quickly understand your issue and assist.
Hope this helps!