Creating a nicely styled vertical linear gauge in SwiftUI:

Creating a nicely styled vertical linear gauge in SwiftUI involves combining various SwiftUI views and modifiers to achieve the desired visual representation. Below is a step-by-step guide on how you can create a vertical linear gauge:

    var value: Double // The value for the gauge (0 to 100 for example)

                    .frame(width: 10, height: 150) // Adjust size as needed

                    .foregroundColor(Color.gray.opacity(0.2))

                    .frame(width: 10, height: gaugeHeight(for: value))

                    .foregroundColor(gaugeColor(for: value))

            Text("\(Int(value))") // Display the value inside the gauge

                .foregroundColor(.primary)

    private func gaugeHeight(for value: Double) -> CGFloat {

        let maxHeight: CGFloat = 150 // Max height of the gauge

        let normalizedValue = CGFloat(value / 100) // Normalize value to 0-1 range

        return maxHeight * normalizedValue

    private func gaugeColor(for value: Double) -> Color {

        VerticalLinearGauge(value: 75) // Replace with your desired value

struct ContentView_Previews: PreviewProvider {

In this example code snippet, the VerticalLinearGauge struct represents the gauge itself. It uses a ZStack to layer two Capsule shapes on top of each other. The lower one represents the background of the gauge, and the upper one represents the actual gauge bar that changes height based on the value. The gaugeHeight function calculates the height of the gauge bar based on the input value, and the gaugeColor function sets the color based on the value range.

The ContentView is a sample usage of the VerticalLinearGauge where you can replace the value parameter with your desired value.

Creating a vertical linear gauge using SwiftUI, a user interface toolkit provided by Apple for building iOS, macOS, watchOS, and tvOS applications using the Swift programming language. A vertical linear gauge is a graphical representation often used to display a value within a specific range, like a thermometer or a progress indicator.

The provided code and explanation demonstrate how to create a vertical linear gauge in SwiftUI. Let's break down the key components:

1. VerticalLinearGauge: This is a SwiftUI view that encapsulates the entire gauge. It takes a value parameter, which represents the value you want to display on the gauge. It uses a VStack to stack the gauge visuals vertically.

2. ZStack and Capsule: The ZStack is a SwiftUI container that allows you to layer views on top of each other. Inside the ZStack, two Capsule shapes are placed. The first Capsule represents the background of the gauge, and the second one represents the actual gauge bar. The second Capsule changes its height to visualize the value.

3. gaugeHeight(for:): This private function calculates the height of the gauge bar based on the provided value. It takes the normalized value (between 0 and 1) and multiplies it by the maximum height of the gauge (here, 150). This ensures that the gauge bar's height visually represents the value's proportion within the range.

4. gaugeColor(for:): Another private function that determines the color of the gauge bar based on the provided value. It uses conditional checks to assign different colors (green, yellow, or red) to the gauge bar depending on the value's range.

5. ContentView: This is a SwiftUI view that demonstrates the usage of the VerticalLinearGauge by passing in a sample value. You can customize the value parameter to see how the gauge changes based on different values.

By combining these components, you can create a visually appealing vertical linear gauge that accurately represents a value within a specified range. You can further customize the appearance, size, colors, and range to match your application's design.

SwiftUI's declarative syntax and modular components make it relatively easy to build complex user interfaces, such as gauges, with minimal code. This example provides a foundation that you can extend and modify to suit your specific application's needs and design preferences.

Create vertical gauges in SwiftUI: value-based bar, color-coded, customizable sizes. Declarative UI for iOS/macOS apps.

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