How to clear old point using qt charts when end of plot is reached?
Unsolved
QML and Qt Quick
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Hi
I am using line series to plot points. when wave reaches at the end of plot
I want to clear the oldest point and plot a new point from the start of the plot.code:
import QtQuick 2.12 import QtQuick.Window 2.12 import QtCharts 2.0 Window { visible: true width: 640 height: 480 title: qsTr("Hello World") property var i: 0 property var j: 0 property var k: 0 ChartView { title: "Line" anchors.fill: parent antialiasing: true ValueAxis { id: xAxis min: 0 max: 10; } ValueAxis { id: yAxis min: 0 max: 10 } LineSeries { id: lineSer name: "LineSeries" axisX: xAxis axisY:yAxis } } Timer { interval: 500; running: true; repeat: true onTriggered: { i = i + 0.5 if(i > 10) { i = 0 j = 1 k=k+1 } if(j===1) { lineSer.remove(0) } lineSer.append(i,k) } } }
I am able to clear the point but there is a line drawn from 10.0 to 0.0(digonal) probably due to append. So how can I eliminate this line as it is not needed?