# init(x:y:width:height:stacking:) Creates a bar mark that plots values with x and y. ``` nonisolated init(x: PlottableValue, y: PlottableValue, width: MarkDimension = .automatic, height: MarkDimension = .automatic, stacking: MarkStackingMethod = .standard) where X : Plottable, Y : Plottable ``` ## Parameters `x` The value plotted with x. `y` The value plotted with y. `width` The bar width. If `width` is `nil`, the default bar size will be applied. `height` The bar height. If `height` is `nil`, the default bar size will be applied. `stacking` The stacking method for the bars with the same categorical/date values. If `stacking` is `nil`, the bars will not be stacked. ## Discussion ### Discussion Use this initializer to create a chart with one or more bars. For horizontal bars, plot categories or dates with y and numbers with x. For vertical bars, plot categories or dates with x and numbers with y: ```swift Chart(data) { BarMark( x: .value("Department", $0.department), y: .value("Profit", $0.profit) ) } ```  --- 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)