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web/chart: fix sample (#909)
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@@ -35,11 +35,12 @@ class SegmentsLineChart extends StatelessWidget {
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final List<charts.Series> seriesList;
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final bool animate;
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SegmentsLineChart(this.seriesList, {this.animate});
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const SegmentsLineChart(this.seriesList, {this.animate, Key key})
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: super(key: key);
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/// Creates a [LineChart] with sample data and no transition.
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factory SegmentsLineChart.withSampleData() {
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return new SegmentsLineChart(
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return SegmentsLineChart(
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_createSampleData(),
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// Disable animations for image tests.
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animate: false,
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@@ -51,45 +52,45 @@ class SegmentsLineChart 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 SegmentsLineChart.withRandomData() {
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return new SegmentsLineChart(_createRandomData());
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return SegmentsLineChart(_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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// Series of data with static dash pattern and stroke width. The colorFn
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// accessor will colorize each datum (for all three series).
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final colorChangeData = [
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new LinearSales(0, random.nextInt(100), null, 2.0),
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new LinearSales(1, random.nextInt(100), null, 2.0),
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new LinearSales(2, random.nextInt(100), null, 2.0),
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new LinearSales(3, random.nextInt(100), null, 2.0),
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new LinearSales(4, random.nextInt(100), null, 2.0),
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new LinearSales(5, random.nextInt(100), null, 2.0),
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new LinearSales(6, random.nextInt(100), null, 2.0),
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LinearSales(0, random.nextInt(100), null, 2.0),
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LinearSales(1, random.nextInt(100), null, 2.0),
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LinearSales(2, random.nextInt(100), null, 2.0),
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LinearSales(3, random.nextInt(100), null, 2.0),
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LinearSales(4, random.nextInt(100), null, 2.0),
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LinearSales(5, random.nextInt(100), null, 2.0),
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LinearSales(6, random.nextInt(100), null, 2.0),
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];
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// Series of data with changing color and dash pattern.
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final dashPatternChangeData = [
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new LinearSales(0, random.nextInt(100), [2, 2], 2.0),
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new LinearSales(1, random.nextInt(100), [2, 2], 2.0),
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new LinearSales(2, random.nextInt(100), [4, 4], 2.0),
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new LinearSales(3, random.nextInt(100), [4, 4], 2.0),
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new LinearSales(4, random.nextInt(100), [4, 4], 2.0),
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new LinearSales(5, random.nextInt(100), [8, 3, 2, 3], 2.0),
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new LinearSales(6, random.nextInt(100), [8, 3, 2, 3], 2.0),
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LinearSales(0, random.nextInt(100), [2, 2], 2.0),
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LinearSales(1, random.nextInt(100), [2, 2], 2.0),
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LinearSales(2, random.nextInt(100), [4, 4], 2.0),
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LinearSales(3, random.nextInt(100), [4, 4], 2.0),
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LinearSales(4, random.nextInt(100), [4, 4], 2.0),
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LinearSales(5, random.nextInt(100), [8, 3, 2, 3], 2.0),
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LinearSales(6, random.nextInt(100), [8, 3, 2, 3], 2.0),
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];
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// Series of data with changing color and stroke width.
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final strokeWidthChangeData = [
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new LinearSales(0, random.nextInt(100), null, 2.0),
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new LinearSales(1, random.nextInt(100), null, 2.0),
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new LinearSales(2, random.nextInt(100), null, 4.0),
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new LinearSales(3, random.nextInt(100), null, 4.0),
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new LinearSales(4, random.nextInt(100), null, 4.0),
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new LinearSales(5, random.nextInt(100), null, 6.0),
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new LinearSales(6, random.nextInt(100), null, 6.0),
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LinearSales(0, random.nextInt(100), null, 2.0),
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LinearSales(1, random.nextInt(100), null, 2.0),
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LinearSales(2, random.nextInt(100), null, 4.0),
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LinearSales(3, random.nextInt(100), null, 4.0),
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LinearSales(4, random.nextInt(100), null, 4.0),
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LinearSales(5, random.nextInt(100), null, 6.0),
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LinearSales(6, random.nextInt(100), null, 6.0),
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];
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// Generate 2 shades of each color so that we can style the line segments.
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@@ -98,7 +99,7 @@ class SegmentsLineChart extends StatelessWidget {
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final green = charts.MaterialPalette.green.makeShades(2);
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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: 'Color Change',
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// Light shade for even years, dark shade for odd.
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colorFn: (LinearSales sales, _) =>
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@@ -109,7 +110,7 @@ class SegmentsLineChart extends StatelessWidget {
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measureFn: (LinearSales sales, _) => sales.sales,
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data: colorChangeData,
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),
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new charts.Series<LinearSales, int>(
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charts.Series<LinearSales, int>(
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id: 'Dash Pattern Change',
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// Light shade for even years, dark shade for odd.
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colorFn: (LinearSales sales, _) =>
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@@ -120,7 +121,7 @@ class SegmentsLineChart extends StatelessWidget {
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measureFn: (LinearSales sales, _) => sales.sales,
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data: dashPatternChangeData,
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),
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new charts.Series<LinearSales, int>(
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charts.Series<LinearSales, int>(
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id: 'Stroke Width Change',
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// Light shade for even years, dark shade for odd.
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colorFn: (LinearSales sales, _) =>
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@@ -137,9 +138,9 @@ class SegmentsLineChart extends StatelessWidget {
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@override
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Widget build(BuildContext context) {
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return new charts.LineChart(seriesList,
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return charts.LineChart(seriesList,
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defaultRenderer:
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new charts.LineRendererConfig(includeArea: true, stacked: true),
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charts.LineRendererConfig(includeArea: true, stacked: true),
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animate: animate);
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}
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@@ -148,35 +149,35 @@ class SegmentsLineChart extends StatelessWidget {
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// Series of data with static dash pattern and stroke width. The colorFn
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// accessor will colorize each datum (for all three series).
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final colorChangeData = [
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new LinearSales(0, 5, null, 2.0),
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new LinearSales(1, 15, null, 2.0),
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new LinearSales(2, 25, null, 2.0),
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new LinearSales(3, 75, null, 2.0),
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new LinearSales(4, 100, null, 2.0),
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new LinearSales(5, 90, null, 2.0),
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new LinearSales(6, 75, null, 2.0),
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LinearSales(0, 5, null, 2.0),
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LinearSales(1, 15, null, 2.0),
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LinearSales(2, 25, null, 2.0),
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LinearSales(3, 75, null, 2.0),
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LinearSales(4, 100, null, 2.0),
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LinearSales(5, 90, null, 2.0),
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LinearSales(6, 75, null, 2.0),
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];
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// Series of data with changing color and dash pattern.
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final dashPatternChangeData = [
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new LinearSales(0, 5, [2, 2], 2.0),
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new LinearSales(1, 15, [2, 2], 2.0),
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new LinearSales(2, 25, [4, 4], 2.0),
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new LinearSales(3, 75, [4, 4], 2.0),
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new LinearSales(4, 100, [4, 4], 2.0),
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new LinearSales(5, 90, [8, 3, 2, 3], 2.0),
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new LinearSales(6, 75, [8, 3, 2, 3], 2.0),
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LinearSales(0, 5, [2, 2], 2.0),
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LinearSales(1, 15, [2, 2], 2.0),
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LinearSales(2, 25, [4, 4], 2.0),
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LinearSales(3, 75, [4, 4], 2.0),
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LinearSales(4, 100, [4, 4], 2.0),
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LinearSales(5, 90, [8, 3, 2, 3], 2.0),
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LinearSales(6, 75, [8, 3, 2, 3], 2.0),
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];
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// Series of data with changing color and stroke width.
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final strokeWidthChangeData = [
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new LinearSales(0, 5, null, 2.0),
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new LinearSales(1, 15, null, 2.0),
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new LinearSales(2, 25, null, 4.0),
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new LinearSales(3, 75, null, 4.0),
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new LinearSales(4, 100, null, 4.0),
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new LinearSales(5, 90, null, 6.0),
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new LinearSales(6, 75, null, 6.0),
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LinearSales(0, 5, null, 2.0),
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LinearSales(1, 15, null, 2.0),
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LinearSales(2, 25, null, 4.0),
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LinearSales(3, 75, null, 4.0),
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LinearSales(4, 100, null, 4.0),
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LinearSales(5, 90, null, 6.0),
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LinearSales(6, 75, null, 6.0),
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];
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// Generate 2 shades of each color so that we can style the line segments.
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@@ -185,7 +186,7 @@ class SegmentsLineChart extends StatelessWidget {
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final green = charts.MaterialPalette.green.makeShades(2);
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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: 'Color Change',
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// Light shade for even years, dark shade for odd.
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colorFn: (LinearSales sales, _) =>
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@@ -196,7 +197,7 @@ class SegmentsLineChart extends StatelessWidget {
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measureFn: (LinearSales sales, _) => sales.sales,
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data: colorChangeData,
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),
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new charts.Series<LinearSales, int>(
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charts.Series<LinearSales, int>(
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id: 'Dash Pattern Change',
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// Light shade for even years, dark shade for odd.
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colorFn: (LinearSales sales, _) =>
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@@ -207,7 +208,7 @@ class SegmentsLineChart extends StatelessWidget {
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measureFn: (LinearSales sales, _) => sales.sales,
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data: dashPatternChangeData,
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),
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new charts.Series<LinearSales, int>(
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charts.Series<LinearSales, int>(
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id: 'Stroke Width Change',
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// Light shade for even years, dark shade for odd.
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colorFn: (LinearSales sales, _) =>
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