This is my first Tableau question - I'm very new (and first report for that matter). I'm using 2018.2.2.
I'm trying to color a bar chart in this way: I have two dimensions: City and Region. I have a rate for each and I want to compare the City Rate to the Region Rate (there are two bars on the chart (City Rate and Region Rate, which works fine). I want the Region bar to always be Gray. I want the City bar to be Red if the City Rate is below the Region Rate and Green if the City Rate is above the Region Rate. That's it.
I have created a calculated field but it changes both bars (i.e. both dimensions, city and region). I want the colors to go as described above. I hope it makes sense.