# INxTrendline Interface

Namespace: [Qlik.Engine](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.htm)  
Assembly: Qlik.Engine.dll

Information about the calculated trendline.

## Syntax

```
[ValueClass]
public interface INxTrendline : IAbstractStructure
```

## Properties

| Name | Description |
| --- | --- |
| [Coeff](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxTrendline.Coeff.htm#Qlik_Engine_INxTrendline_Coeff) | Coefficent c0..cN depending on the trendline type.<br><br>JSON property name: qCoeff |
| [ElemNo](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxTrendline.ElemNo.htm#Qlik_Engine_INxTrendline_ElemNo) | Inner Dim elem no<br><br>JSON property name: qElemNo |
| [Error](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxTrendline.Error.htm#Qlik_Engine_INxTrendline_Error) | This parameter is optional and is displayed in case of error.<br><br>JSON property name: qError |
| [Expression](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxTrendline.Expression.htm#Qlik_Engine_INxTrendline_Expression) | Trendline expression<br><br>JSON property name: qExpression |
| [R2](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxTrendline.R2.htm#Qlik_Engine_INxTrendline_R2) | R2 score. Value between 0..1 that shows the correlation between the trendline and the data. Higher value means higher correlation.<br><br>JSON property name: qR2 |
| [Type](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxTrendline.Type.htm#Qlik_Engine_INxTrendline_Type) | Type of trendline<br><br>JSON property name: qType |