---
title: MIDITransformType.mapValue
framework: coremidi
role: symbol
role_heading: Case
path: coremidi/miditransformtype/mapvalue
---

# MIDITransformType.mapValue

A transform that maps one value to another.

## Declaration

```swift
case mapValue
```

## Discussion

Discussion The value you specify is the index of the map in the connection’s array of maps.

## See Also

### Transform Types

- [MIDITransformType.none](coremidi/miditransformtype/none.md)
- [MIDITransformType.filterOut](coremidi/miditransformtype/filterout.md)
- [MIDITransformType.mapControl](coremidi/miditransformtype/mapcontrol.md)
- [MIDITransformType.add](coremidi/miditransformtype/add.md)
- [MIDITransformType.scale](coremidi/miditransformtype/scale.md)
- [MIDITransformType.minValue](coremidi/miditransformtype/minvalue.md)
- [MIDITransformType.maxValue](coremidi/miditransformtype/maxvalue.md)