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web/chart: fix sample (#909)
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@@ -24,7 +24,8 @@ class LineLineAnnotationChart extends StatelessWidget {
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final List<charts.Series> seriesList;
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final bool animate;
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LineLineAnnotationChart(this.seriesList, {this.animate});
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const LineLineAnnotationChart(this.seriesList, {this.animate, Key key})
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: super(key: key);
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/// Creates a [LineChart] with sample data and line annotations.
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///
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@@ -32,7 +33,7 @@ class LineLineAnnotationChart extends StatelessWidget {
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/// demonstrating the effect of the [Charts.RangeAnnotation.extendAxis] flag.
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/// This can be set to false to disable range extension.
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factory LineLineAnnotationChart.withSampleData() {
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return new LineLineAnnotationChart(
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return LineLineAnnotationChart(
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_createSampleData(),
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// Disable animations for image tests.
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animate: false,
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@@ -44,24 +45,24 @@ class LineLineAnnotationChart extends StatelessWidget {
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// It is used for creating random series data to demonstrate animation in
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// the example app only.
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factory LineLineAnnotationChart.withRandomData() {
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return new LineLineAnnotationChart(_createRandomData());
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return LineLineAnnotationChart(_createRandomData());
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}
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/// Create random data.
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static List<charts.Series<LinearSales, num>> _createRandomData() {
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final random = new Random();
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final random = Random();
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final data = [
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new LinearSales(0, random.nextInt(100)),
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new LinearSales(1, random.nextInt(100)),
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new LinearSales(2, random.nextInt(100)),
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LinearSales(0, random.nextInt(100)),
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LinearSales(1, random.nextInt(100)),
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LinearSales(2, random.nextInt(100)),
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// Fix one of the points to 100 so that the annotations are consistently
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// placed.
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new LinearSales(3, 100),
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LinearSales(3, 100),
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];
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return [
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new charts.Series<LinearSales, int>(
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charts.Series<LinearSales, int>(
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id: 'Sales',
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domainFn: (LinearSales sales, _) => sales.year,
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measureFn: (LinearSales sales, _) => sales.sales,
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@@ -73,21 +74,17 @@ class LineLineAnnotationChart extends StatelessWidget {
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@override
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Widget build(BuildContext context) {
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return new charts.LineChart(seriesList, animate: animate, behaviors: [
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new charts.RangeAnnotation([
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new charts.LineAnnotationSegment(
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1.0, charts.RangeAnnotationAxisType.domain,
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return charts.LineChart(seriesList, animate: animate, behaviors: [
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charts.RangeAnnotation([
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charts.LineAnnotationSegment(1.0, charts.RangeAnnotationAxisType.domain,
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startLabel: 'Domain 1'),
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new charts.LineAnnotationSegment(
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4, charts.RangeAnnotationAxisType.domain,
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charts.LineAnnotationSegment(4, charts.RangeAnnotationAxisType.domain,
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endLabel: 'Domain 2', color: charts.MaterialPalette.gray.shade200),
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new charts.LineAnnotationSegment(
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20, charts.RangeAnnotationAxisType.measure,
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charts.LineAnnotationSegment(20, charts.RangeAnnotationAxisType.measure,
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startLabel: 'Measure 1 Start',
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endLabel: 'Measure 1 End',
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color: charts.MaterialPalette.gray.shade300),
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new charts.LineAnnotationSegment(
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65, charts.RangeAnnotationAxisType.measure,
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charts.LineAnnotationSegment(65, charts.RangeAnnotationAxisType.measure,
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startLabel: 'Measure 2 Start',
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endLabel: 'Measure 2 End',
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color: charts.MaterialPalette.gray.shade400),
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@@ -98,14 +95,14 @@ class LineLineAnnotationChart extends StatelessWidget {
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/// Create one series with sample hard coded data.
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static List<charts.Series<LinearSales, int>> _createSampleData() {
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final data = [
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new LinearSales(0, 5),
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new LinearSales(1, 25),
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new LinearSales(2, 100),
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new LinearSales(3, 75),
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LinearSales(0, 5),
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LinearSales(1, 25),
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LinearSales(2, 100),
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LinearSales(3, 75),
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];
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return [
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new charts.Series<LinearSales, int>(
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charts.Series<LinearSales, int>(
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id: 'Sales',
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domainFn: (LinearSales sales, _) => sales.year,
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measureFn: (LinearSales sales, _) => sales.sales,
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