I want to draw this Legend by ArcGIS 10.2. This legend starts with a big blue circle and decreases in size till 0, then in 6 its bigger and red. I know its related to symbology and multiple attributes but which part could do it for me I don't know.
- I can't show both red and blue circles together.
- It starts with a big size and goes to smallest. I can set it by hand but its not completely same in both negative circles and positives circle because sometimes the intervals are not the same.