# `GSGlyphEditView.interpolationAxisLocation`

*Instance Property*

The design space location (axis ID to coordinate) at which Edit View shows a non-editable interpolation preview, or `nil` when it shows the real, editable layer.

## Declaration

```swift
var interpolationAxisLocation: [String : NSNumber]? { get }
```

```objc
@property (nonatomic, copy, readonly) NSDictionary<NSString *,NSNumber *> * interpolationAxisLocation;
```

```python
interpolationAxisLocation() -> dict[str, NSNumber]
```

## Discussion

Change it through [`GSGlyphEditView showInterpolationAtAxisLocation:`](/Core/GlyphsApp/GSGlyphEditView/showInterpolationAtAxisLocation:) and [`GSGlyphEditView resetInterpolation`](/Core/GlyphsApp/GSGlyphEditView/resetInterpolation). Use [`GSGlyphEditView.interpolating`](/Core/GlyphsApp/GSGlyphEditView/interpolating) to test presence.