---
title: "value(_:_:_:)"
framework: charts
role: symbol
role_heading: Type Method
path: "charts/plottableprojection/value(_:_:_:)-7lfga"
---

# value(_:_:_:)

## Declaration

```swift
static func value(_ label: some StringProtocol, _ start: KeyPath<DataElement, DataValue>, _ end: KeyPath<DataElement, DataValue>) -> PlottableProjection<DataElement, DataValue> where DataValue : Comparable
```