Now that you understand how Arcade expressions can be used to label features, it is time to look at another use for Arcade. You can also use Arcade expressions to control the symbology for features within a layer.
You can use Arcade expressions to generate symbology categories or ranges based on equations, functions, or data logic. This can provide much greater flexibility with your data and how you can display it. For example, you might have a road that is attributed with the traffic count values. However, you want to symbolize them with a simple low, medium, or high volume for those who may not know about low, medium, or high traffic count numbers. An Arcade expression will allow you to do that.
This section will show you how to create a symbology expression, along with some common operators.
Now that you have a general idea of what a symbology expression can be used for, it is time to create one.