Do step 6 first if you wish to use a defined color as the background. This is optional. If you are going to use a unique color for your background, you MUST define that unique color as the first defined color. Our bar does not require any unique colors. Define your first spread.
Every bar has at least one spread.
A spread can take the length of the entire bar, or be just a small part of the bar. It is often useful to know the start and end points of the spread with respect to the bar itself. The spread can, optionally, have a default color for items in that spread. Our first spread is from 0 to 3.825 miles, and we want the default color of our items to be blue. 4.4750 5.1250 Note that the data does not need to fill the entire spread, and can represent whatever we want in the bar.