> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nodi3d.com/llms.txt
> Use this file to discover all available pages before exploring further.

# IsoCurve

> Iso Curve node: Create iso curves from a surface. Curve › Spline node in Nodi, with its inputs, outputs and properties.

Create iso curves from a surface.

**Category**: [Curve](https://docs.nodi3d.com/nodi-editor/nodes.md#curve) › Spline\
**Shown in the node menu as**: Iso Curve

## Inputs

| Input | Type |
| - | - |
| base surface | `Surface` |
| uv | `Point, Vector` |

## Outputs

| Output | Type |
| - | - |
| U iso curves | `Curve` |
| V iso curves | `Curve` |

## Properties

Properties are set in the Inspector and are used when the matching input is not connected.

| Property | Type |
| - | - |
| uv | `Vector2d` |

## Related nodes

Other nodes in Curve › Spline:

* [Interpolate](https://docs.nodi3d.com/node/interpolate.md): Create a NURBS curve by interpolating points.
* [NurbsCurve](https://docs.nodi3d.com/node/nurbs-curve.md): Create a NURBS curve from control points & degree & periodicity.
* [Polyline](https://docs.nodi3d.com/node/polyline.md): Create a polyline from a list of points.


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