View2.qml Example File

qmlpolarchart/qml/qmlpolarchart/View2.qml

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  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the Qt Charts module of the Qt Toolkit.
  **
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  import QtQuick 2.0
  import QtCharts 2.0

  Item {
      anchors.fill: parent

      PolarChartView {
          title: "Historical Area Series"
          anchors.fill: parent
          legend.visible: false
          antialiasing: true

          DateTimeAxis {
              id: axis1
              format: "yyyy MMM"
              tickCount: 13
          }
          ValueAxis {
              id: axis2
          }
          LineSeries {
              id: lowerLine
              axisAngular: axis1
              axisRadial: axis2

              // Please note that month in JavaScript months are zero based, so 2 means March
              XYPoint { x: toMsecsSinceEpoch(new Date(1950, 0, 1)); y: 15 }
              XYPoint { x: toMsecsSinceEpoch(new Date(1962, 4, 1)); y: 35 }
              XYPoint { x: toMsecsSinceEpoch(new Date(1970, 0, 1)); y: 50 }
              XYPoint { x: toMsecsSinceEpoch(new Date(1978, 2, 1)); y: 75 }
              XYPoint { x: toMsecsSinceEpoch(new Date(1987, 11, 1)); y: 102 }
              XYPoint { x: toMsecsSinceEpoch(new Date(1992, 1, 1)); y: 132 }
              XYPoint { x: toMsecsSinceEpoch(new Date(1998, 7, 1)); y: 100 }
              XYPoint { x: toMsecsSinceEpoch(new Date(2002, 4, 1)); y: 120 }
              XYPoint { x: toMsecsSinceEpoch(new Date(2012, 8, 1)); y: 140 }
              XYPoint { x: toMsecsSinceEpoch(new Date(2013, 5, 1)); y: 150 }
          }
          LineSeries {
              id: upperLine
              axisAngular: axis1
              axisRadial: axis2

              // Please note that month in JavaScript months are zero based, so 2 means March
              XYPoint { x: toMsecsSinceEpoch(new Date(1950, 0, 1)); y: 30 }
              XYPoint { x: toMsecsSinceEpoch(new Date(1962, 4, 1)); y: 55 }
              XYPoint { x: toMsecsSinceEpoch(new Date(1970, 0, 1)); y: 80 }
              XYPoint { x: toMsecsSinceEpoch(new Date(1978, 2, 1)); y: 105 }
              XYPoint { x: toMsecsSinceEpoch(new Date(1987, 11, 1)); y: 125 }
              XYPoint { x: toMsecsSinceEpoch(new Date(1992, 1, 1)); y: 160 }
              XYPoint { x: toMsecsSinceEpoch(new Date(1998, 7, 1)); y: 140 }
              XYPoint { x: toMsecsSinceEpoch(new Date(2002, 4, 1)); y: 140 }
              XYPoint { x: toMsecsSinceEpoch(new Date(2012, 8, 1)); y: 170 }
              XYPoint { x: toMsecsSinceEpoch(new Date(2013, 5, 1)); y: 200 }
          }
          AreaSeries {
              axisAngular: axis1
              axisRadial: axis2
              lowerSeries: lowerLine
              upperSeries: upperLine
          }
      }
      // DateTimeAxis is based on QDateTimes so we must convert our JavaScript dates to
      // milliseconds since epoch to make them match the DateTimeAxis values
      function toMsecsSinceEpoch(date) {
          var msecs = date.getTime();
          return msecs;
      }
  }