- Qt 6.8
- Qt Charts
- QML Types
- SplineSeries
- Qt Charts | Commercial or GPLv3

# SplineSeries QML Type

Presents data as spline charts. More...

Import Statement: | import QtCharts 2.8
Instantiates: | QSplineSeries
Inherits: | XYSeries

- List of all members, including inherited members

## Properties

- capStyle : Qt::PenCapStyle
- count : int
- style : Qt::PenStyle
- width : real

## Detailed Description

A spline series stores the data points and the segment control points needed by QPainterPath to draw a spline. The control points are automatically calculated when the data changes. The algorithm computes the points so that the normal spline can be drawn.

The following QML code shows how to create a simple spline chart:

     ChartView {
         title: "Spline Chart"
         anchors.fill: parent
         antialiasing: true

         SplineSeries {
             name: "Spline"
             XYPoint { x: 0; y: 0.0 }
             XYPoint { x: 1.1; y: 3.2 }
             XYPoint { x: 1.9; y: 2.4 }
             XYPoint { x: 2.1; y: 2.1 }
             XYPoint { x: 2.9; y: 2.6 }
             XYPoint { x: 3.4; y: 2.3 }
             XYPoint { x: 4.1; y: 3.1 }
         }
     }

## Property Documentation

capStyle : Qt::PenCapStyle

Controls the cap style of the line. Set to one of Qt.FlatCap, Qt.SquareCap or Qt.RoundCap. By default, the cap style is Qt.SquareCap.

See also Qt::PenCapStyle.

count : int

The number of data points in the series.

style : Qt::PenStyle

Controls the style of the line. Set to one of Qt.NoPen, Qt.SolidLine, Qt.DashLine, Qt.DotLine, Qt.DashDotLine, or Qt.DashDotDotLine. Using Qt.CustomDashLine is not supported in the QML API. By default, the style is Qt.SolidLine.

See also Qt::PenStyle.

width : real

The width of the line. By default, the width is 2.0.