I'm not sure if this question makes sense. I need to create a graph that has two types of lines, the Revenue forecast and the Revenue plan. I would like to have tableau take the difference between the two values and then fill in the space between the lines to represent the variance of the two data types. I have included a picture of what I am kind of looking for (sorry for the horrible drawing on it). I will also attach some sample data in the same format that my original data is in. Thank you in advance for the help!
Would you be able to create a new column on the data source for the difference then simply plot that line?