---
title: valueDescriptionProvider
framework: accessibility
role: symbol
role_heading: Instance Property
path: accessibility/axnumericdataaxisdescriptor/valuedescriptionprovider
---

# valueDescriptionProvider

A description to speak for a particular data value on the axis.

## Declaration

```swift
var valueDescriptionProvider: (Double) -> String { get set }
```

## Mentioned in

Representing chart data as an audio graph

## Discussion

Discussion Use this property to format data values into string representations that include units, dates, times, and more.