Demonstrates how to use Stacked Column API to render Stacked ar Chart in SciChart Android. A Stacked Bars chart is a Stacked Column chart rotated 90 degrees, so that the columns are rendered horizontally. In order to achieve this effect, we create a Stacked Column chart, then use the XAxis and YAxis alignment to rotate the chart.

When you add multiple StackedColumnRenderableSeries into VerticallyStackedColumnsCollection for vertical grouping or into HorizontallyStackedColumnsCollection for horizontal grouping  it allows to render them stacked one above another or side by side. Data provided by its DataSeries can be used to render an XyDataSeries (which contains one X-point and one Y-point), XyyDataSeries (renders Y values), XyzDataSeries, HlDataSeries and OhlcDataSeries(renders Close values). Columns are drawn using the pens provided by the setStrokeStyle(PenStyle) (outline) and using the Brush provided by the setFillBrushStyle(BrushStyle) (fill).

Tip!

Do you need to change the width of a column? Try calling the setDataPointWidth() method passing in any number from 0.0 to 1.0. This alters how much space a column takes up.

// Kotlin: StackedBarChartFragment.kt

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2021. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// StackedBarChartFragment.kt is part of SCICHART®, High Performance Scientific Charts
// For full terms and conditions of the license, see http://www.scichart.com/scichart-eula/
//
// This source code is protected by international copyright law. Unauthorized
// reproduction, reverse-engineering, or distribution of all or any portion of
// this source code is strictly prohibited.
//
// This source code contains confidential and proprietary trade secrets of
// SciChart Ltd., and should at no time be copied, transferred, sold,
// distributed or made available without express written permission.
//******************************************************************************

package com.scichart.examples.fragments.examples2d.multiChart.kt

import android.view.animation.DecelerateInterpolator
import com.scichart.charting.visuals.SciChartSurface
import com.scichart.charting.visuals.axes.AxisAlignment.Bottom
import com.scichart.charting.visuals.axes.AxisAlignment.Left
import com.scichart.examples.fragments.base.ExampleSingleChartBaseFragment
import com.scichart.examples.utils.scichartExtensions.*

class StackedBarChartFragment: ExampleSingleChartBaseFragment() {
    override fun initExample(surface: SciChartSurface) {
        surface.suspendUpdates {
            xAxes { numericAxis { axisAlignment = Left } }
            yAxes { numericAxis { axisAlignment = Bottom; flipCoordinates = true} }

            renderableSeries {
                verticallyStackedColumnsCollection {
                    stackedColumnRenderableSeries {
                        xyDataSeries<Double, Double>("Data 1") {
                            for (i in yValues1.indices) append(i.toDouble(), yValues1[i])
                        }
                        dataPointWidth = 0.8
                        fillBrushStyle = LinearGradientBrushStyle(0xff567893, 0xff3D5568)
                        strokeStyle = SolidPenStyle(0xff567893, 0f)

                        waveAnimation { interpolator = DecelerateInterpolator() }
                    }
                    stackedColumnRenderableSeries {
                        xyDataSeries<Double, Double>("Data 2") {
                            for (i in yValues2.indices) append(i.toDouble(), yValues2[i])
                        }
                        dataPointWidth = 0.8
                        fillBrushStyle = LinearGradientBrushStyle(0xffACBCCA, 0xff439AAF)
                        strokeStyle = SolidPenStyle(0xffACBCCA, 0f)

                        waveAnimation { interpolator = DecelerateInterpolator() }
                    }
                    stackedColumnRenderableSeries {
                        xyDataSeries<Double, Double>("Data 3") {
                            for (i in yValues3.indices) append(i.toDouble(), yValues3[i])
                        }
                        dataPointWidth = 0.8
                        fillBrushStyle = LinearGradientBrushStyle(0xffDBE0E1, 0xffB6C1C3)
                        strokeStyle = SolidPenStyle(0xffDBE0E1, 0f)

                        waveAnimation { interpolator = DecelerateInterpolator() }
                    }
                }
            }

            chartModifiers {
                cursorModifier()
                zoomExtentsModifier()
            }
        }
    }

    companion object {
        var yValues1 = doubleArrayOf(0.0, 0.1, 0.2, 0.4, 0.8, 1.1, 1.5, 2.4, 4.6, 8.1, 11.7, 14.4, 16.0, 13.7, 10.1, 6.4, 3.5, 2.5, 5.4, 6.4, 7.1, 8.0, 9.0)
        var yValues2 = doubleArrayOf(2.0, 10.1, 10.2, 10.4, 10.8, 1.1, 11.5, 3.4, 4.6, 0.1, 1.7, 14.4, 16.0, 13.7, 10.1, 6.4, 3.5, 2.5, 1.4, 0.4, 10.1, 0.0, 0.0)
        var yValues3 = doubleArrayOf(20.0, 4.1, 4.2, 10.4, 10.8, 1.1, 11.5, 3.4, 4.6, 5.1, 5.7, 14.4, 16.0, 13.7, 10.1, 6.4, 3.5, 2.5, 1.4, 10.4, 8.1, 10.0, 15.0)
    }
}

// Java: StackedBarChartFragment.java

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2021. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// StackedBarChartFragment.java is part of SCICHART®, High Performance Scientific Charts
// For full terms and conditions of the license, see http://www.scichart.com/scichart-eula/
//
// This source code is protected by international copyright law. Unauthorized
// reproduction, reverse-engineering, or distribution of all or any portion of
// this source code is strictly prohibited.
//
// This source code contains confidential and proprietary trade secrets of
// SciChart Ltd., and should at no time be copied, transferred, sold,
// distributed or made available without express written permission.
//******************************************************************************

package com.scichart.examples.fragments.examples2d.multiChart;

import android.view.animation.DecelerateInterpolator;

import androidx.annotation.NonNull;

import com.scichart.charting.model.dataSeries.IXyDataSeries;
import com.scichart.charting.modifiers.CursorModifier;
import com.scichart.charting.modifiers.ZoomExtentsModifier;
import com.scichart.charting.visuals.SciChartSurface;
import com.scichart.charting.visuals.axes.AxisAlignment;
import com.scichart.charting.visuals.axes.IAxis;
import com.scichart.charting.visuals.renderableSeries.StackedColumnRenderableSeries;
import com.scichart.charting.visuals.renderableSeries.VerticallyStackedColumnsCollection;
import com.scichart.core.framework.UpdateSuspender;
import com.scichart.examples.fragments.base.ExampleSingleChartBaseFragment;

import java.util.Collections;

public class StackedBarChartFragment extends ExampleSingleChartBaseFragment {

    @Override
    protected void initExample(@NonNull SciChartSurface surface) {
        final IAxis xAxis = sciChartBuilder.newNumericAxis().withAxisAlignment(AxisAlignment.Left).build();
        final IAxis yAxis = sciChartBuilder.newNumericAxis().withAxisAlignment(AxisAlignment.Bottom).withFlipCoordinates(true).build();

        double[] yValues1 = new double[]{0.0, 0.1, 0.2, 0.4, 0.8, 1.1, 1.5, 2.4, 4.6, 8.1, 11.7, 14.4, 16.0, 13.7, 10.1, 6.4, 3.5, 2.5, 5.4, 6.4, 7.1, 8.0, 9.0};
        double[] yValues2 = new double[]{2.0, 10.1, 10.2, 10.4, 10.8, 1.1, 11.5, 3.4, 4.6, 0.1, 1.7, 14.4, 16.0, 13.7, 10.1, 6.4, 3.5, 2.5, 1.4, 0.4, 10.1, 0.0, 0.0};
        double[] yValues3 = new double[]{20.0, 4.1, 4.2, 10.4, 10.8, 1.1, 11.5, 3.4, 4.6, 5.1, 5.7, 14.4, 16.0, 13.7, 10.1, 6.4, 3.5, 2.5, 1.4, 10.4, 8.1, 10.0, 15.0};

        final IXyDataSeries<Double, Double> ds1 = sciChartBuilder.newXyDataSeries(Double.class, Double.class).withSeriesName("data 1").build();
        final IXyDataSeries<Double, Double> ds2 = sciChartBuilder.newXyDataSeries(Double.class, Double.class).withSeriesName("data 2").build();
        final IXyDataSeries<Double, Double> ds3 = sciChartBuilder.newXyDataSeries(Double.class, Double.class).withSeriesName("data 3").build();

        for (int i = 0; i < yValues1.length; i++) {
            double xValue = (double) i;
            ds1.append(xValue, yValues1[i]);
            ds2.append(xValue, yValues2[i]);
            ds3.append(xValue, yValues3[i]);
        }

        final StackedColumnRenderableSeries series1 = sciChartBuilder.newStackedColumn().withDataPointWidth(0.8).withDataSeries(ds1).withLinearGradientColors(0xff567893, 0xff3D5568).withStrokeStyle(0xff567893, 0f).build();
        final StackedColumnRenderableSeries series2 = sciChartBuilder.newStackedColumn().withDataPointWidth(0.8).withDataSeries(ds2).withLinearGradientColors(0xffACBCCA, 0xff439AAF).withStrokeStyle(0xffACBCCA, 0f).build();
        final StackedColumnRenderableSeries series3 = sciChartBuilder.newStackedColumn().withDataPointWidth(0.8).withDataSeries(ds3).withLinearGradientColors(0xffDBE0E1, 0xffB6C1C3).withStrokeStyle(0xffDBE0E1, 0f).build();

        final VerticallyStackedColumnsCollection verticalCollection = new VerticallyStackedColumnsCollection();
        verticalCollection.add(series1);
        verticalCollection.add(series2);
        verticalCollection.add(series3);

        UpdateSuspender.using(surface, () -> {
            Collections.addAll(surface.getRenderableSeries(), verticalCollection);
            Collections.addAll(surface.getXAxes(), xAxis);
            Collections.addAll(surface.getYAxes(), yAxis);
            Collections.addAll(surface.getChartModifiers(), new CursorModifier());
            Collections.addAll(surface.getChartModifiers(), new ZoomExtentsModifier());

            sciChartBuilder.newAnimator(series1).withWaveTransformation().withInterpolator(new DecelerateInterpolator()).withDuration(3000).withStartDelay(350).start();
            sciChartBuilder.newAnimator(series2).withWaveTransformation().withInterpolator(new DecelerateInterpolator()).withDuration(3000).withStartDelay(350).start();
            sciChartBuilder.newAnimator(series3).withWaveTransformation().withInterpolator(new DecelerateInterpolator()).withDuration(3000).withStartDelay(350).start();
        });
    }
}

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