# GH_Interval1D struct

Namespace: [GH_IO.Types](https://developer.rhino3d.com/api/gh1/namespace/gh-io.types.md) · Assembly: [GH_IO](https://developer.rhino3d.com/api/gh1/assembly/gh-io.md)

```cs
public struct GH_Interval1D
```

Represents two double precision floating point values.

## Constructors

- [GH_Interval1D](https://developer.rhino3d.com/api/gh1/type/gh-io.types.gh-interval1d/ctor.md): Constructor.

## Fields

- [a](https://developer.rhino3d.com/api/gh1/type/gh-io.types.gh-interval1d/a.md): Start of interval.
- [b](https://developer.rhino3d.com/api/gh1/type/gh-io.types.gh-interval1d/b.md): End of interval.

## Methods

- [ToString](https://developer.rhino3d.com/api/gh1/type/gh-io.types.gh-interval1d/tostring.md): Converts this structure to a human-readable string.