I am trying to construct a conditional background, based on a categorical variable, in Tableau. For example, the fed funds chart; you can see there's a line chart with two background colors. You can see that the grey extends the entire height of the chart:
http://www.alhambrapartners.com/wp-content/uploads/2012/01/FED-FUNDS-Rate-1954-to-Present-010612.png
In my data, there are 3 colors. I can get close to it by using a dual axis chart, but I can't seem to get it just right. I tried assigning a static variable, and then using the categorical as a color also, however, that doesn't really have the necessary effect.
Does anyone have any ideas?
This is the data:
https://www.dropbox.com/s/jubue3epaqct0cg/Book3.xlsx?dl=0
This is the Tableau workbook: https://www.dropbox.com/s/753399kzm922l54/Book5.twbx?dl=0
