# BlendFunction class

Namespace: [Grasshopper2.Types.Functions.Standard](https://developer.rhino3d.com/api/gh2/namespace/grasshopper2.types.functions.standard.md) · Assembly: [Grasshopper2](https://developer.rhino3d.com/api/gh2/assembly/grasshopper2.md)

```cs
[IoId("00000000-263F-4FFF-81A4-D4864CCCE250")]
public class BlendFunction : FunctionWithCaching
```

Represents an immutable interpolated equation.

## Constructors

- [BlendFunction](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.blendfunction/ctor.md): (3 overloads)

## Properties

- [Interpolation](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.blendfunction/interpolation.md): Gets the interpolation type for the blend between [BlendFunction.P0](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.blendfunction/p0.md) and [BlendFunction.P1](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.blendfunction/p1.md).
- [P0](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.blendfunction/p0.md): Start of blend. All y-values to the left of P0 are constant.
- [P1](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.blendfunction/p1.md): End of blend. All y-values to the right of P1 are constant.
- [Ui](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.blendfunction/ui.md)

## Methods

- [DerivativeAt](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.blendfunction/derivativeat.md)
- [DomainEstimate](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.blendfunction/domainestimate.md)
- [EmitDerivative](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.blendfunction/emitderivative.md)
- [Store](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.blendfunction/store.md)
- [Y](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.blendfunction/y.md)

## Inherited Members

- From [FunctionWithCaching](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionwithcaching.md): [Derivative](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionwithcaching/derivative.md), [Integral](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionwithcaching/integral.md), [Nomen](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionwithcaching/nomen.md), [Notation](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionwithcaching/notation.md), [EmitIntegral](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionwithcaching/emitintegral.md)
- From [Function](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.function.md): [Asymptotes](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.function/asymptotes.md), [AutoCoDomain](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.function/autocodomain.md), [Holes](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.function/holes.md), [Integrate](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.function/integrate.md), [Poles](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.function/poles.md), [YYYY](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.function/yyyy.md)