Please post a screenshot (that includes the Rows, Columns, and Marks Card) or a packaged workbook with some sample data, I have some ideas about what this might be, but we need more details.
I don't believe there is currently a way to do this. Jonathan may have some ideas, but from the standpoint of an easy formatting trick I would say add it to the Ideas section!
Jonathan, I believe this is what Robin is referring to:
Tracy, how I'm interpreting your screenshot is that you want the area chart to go all the way to the mid-point between years (rather than the midpoint of the year), and the bar chart to be drawn at the mid-point of the year (the default).
I don't know of any built-in option to get Tableau to change where it draws the year, so we'd have to hack it, I set it up in the attached with a duplicated data source and custom calcs for the measures and year, then played with the axis range and bar size. This took about 10 minutes to do from scratch, so it doesn't have to take that long. Here's a screenshot:
Ah, should've thought of that! Good work around!
Sorry, I was out of office Friday, that is exactly what i am looking for, but, how did you get the dimension "Matk Type"?
Edit the data connection and look at the Custom SQL. When I UNION'ed the data sources together I added a column for the Mark Type.