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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+import QtQuick
+import QtCharts
+
+Item {
+ anchors.fill: parent
+
+ //![1]
+ 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;
+ }
+ //![1]
+}