# symbol(by:) Represents data using different kinds of symbols. ``` nonisolated func symbol(by value: PlottableValue) -> some ChartContent where D : Plottable ``` ## Parameters `value` The data value. `value` must be categorial, such as `String`. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)