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Android Impulse (Stem) Chart
// Android Chart Examples
SciChart Android ships with ~90Â Android Chart Examples which you can browse, play with, view the source-code and even export each SciChart Android Chart Example to a stand-alone Android Studio project. All of this is possible with the new and improved SciChart Android Examples Suite, which ships as part of our Android Charts SDK.
Generates an Impulse-response style chart with optional point-marker in code. The FastImpulseRenderableSeries 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).
Impulse Chart can be used to visualize Digital Filter responses, or scientific charts, for instance, mass spectra.
Tip!
You can add optional data-point markers to a impulse series using the PointMarker API. This is very performant and uses the same bitmap rendering as our Scatter-Charts.
// Source Code
The full source code for the Android Impulse (Stem) Chart example is included below (Scroll down!).
Did you know you can also view the source code from one of the following sources as well?
- Clone the SciChart.Android.Examples from Github.
- Or, view source and export each example to an Android Studio project from the Java version of the SciChart Android Examples app.
- Also the SciChart Android Trial contains the full source for the examples (link below).
The SciChart Examples source code is available on Github and viewable in-app for some platforms
// example_single_chart_fragment.xml
<?xml version="1.0" encoding="utf-8"?><!--*************************************************************************-->
<!-- SCICHART® Copyright SciChart Ltd. 2011-2016. All rights reserved. -->
<!-- -->
<!-- Web: http://www.scichart.com -->
<!-- Support: support@scichart.com -->
<!-- Sales: sales@scichart.com -->
<!-- -->
<!-- example_single_chart_fragment.xml is part of the SCICHART® Examples. Permission is hereby granted -->
<!-- to modify, create derivative works, distribute and publish any part of this source -->
<!-- code whether for commercial, private or personal use. -->
<!-- -->
<!-- The SCICHART® examples are distributed in the hope that they will be useful, but -->
<!-- without any warranty. It is provided "AS IS" without warranty of any kind, either -->
<!-- expressed or implied. -->
<!--*************************************************************************-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<com.scichart.charting.visuals.SciChartSurface
android:id="@+id/chart"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>// ImpulseChartFragment.java
//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2017. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales: sales@scichart.com
//
// ImpulseChartFragment.java is part of the SCICHART® Examples. Permission is hereby granted
// to modify, create derivative works, distribute and publish any part of this source
// code whether for commercial, private or personal use.
//
// The SCICHART® examples are distributed in the hope that they will be useful, but
// without any warranty. It is provided "AS IS" without warranty of any kind, either
// expressed or implied.
//******************************************************************************
package com.scichart.examples.fragments;
import android.view.animation.DecelerateInterpolator;
import com.scichart.charting.model.dataSeries.IXyDataSeries;
import com.scichart.charting.visuals.SciChartSurface;
import com.scichart.charting.visuals.axes.IAxis;
import com.scichart.charting.visuals.pointmarkers.EllipsePointMarker;
import com.scichart.charting.visuals.renderableSeries.FastImpulseRenderableSeries;
import com.scichart.core.framework.UpdateSuspender;
import com.scichart.drawing.utility.ColorUtil;
import com.scichart.examples.R;
import com.scichart.examples.data.DataManager;
import com.scichart.examples.data.DoubleSeries;
import com.scichart.examples.fragments.base.ExampleBaseFragment;
import java.util.Collections;
import butterknife.BindView;
public class ImpulseChartFragment extends ExampleBaseFragment {
@BindView(R.id.chart)
SciChartSurface surface;
@Override
protected int getLayoutId() {
return R.layout.example_single_chart_fragment;
}
@Override
protected void initExample() {
final IAxis xBottomAxis = sciChartBuilder.newNumericAxis().withGrowBy(0.1d, 0.1d).build();
final IAxis yRightAxis = sciChartBuilder.newNumericAxis().withGrowBy(0.1d, 0.1d).build();
final DoubleSeries ds1Points = DataManager.getInstance().getDampedSinewave(1.0, 0.05, 50, 5);
final IXyDataSeries<Double, Double> dataSeries = sciChartBuilder.newXyDataSeries(Double.class, Double.class).build();
dataSeries.append(ds1Points.xValues, ds1Points.yValues);
final EllipsePointMarker pointMarker = sciChartBuilder.newPointMarker(new EllipsePointMarker())
.withSize(10, 10)
.withStroke(ColorUtil.argb(0xFF, 0x00, 0x66, 0xFF), 1)
.withFill(ColorUtil.argb(0xFF, 0x00, 0x66, 0xFF))
.build();
final FastImpulseRenderableSeries rSeries = sciChartBuilder.newImpulseSeries()
.withDataSeries(dataSeries)
.withXAxisId(xBottomAxis.getAxisId())
.withYAxisId(yRightAxis.getAxisId())
.withStrokeStyle(ColorUtil.argb(0xFF, 0x00, 0x66, 0xFF))
.withPointMarker(pointMarker)
.build();
UpdateSuspender.using(surface, new Runnable() {
@Override
public void run() {
Collections.addAll(surface.getXAxes(), xBottomAxis);
Collections.addAll(surface.getYAxes(), yRightAxis);
Collections.addAll(surface.getRenderableSeries(), rSeries);
Collections.addAll(surface.getChartModifiers(), sciChartBuilder.newModifierGroupWithDefaultModifiers().build());
sciChartBuilder.newAnimator(rSeries).withWaveTransformation().withInterpolator(new DecelerateInterpolator()).withDuration(3000).withStartDelay(350).start();
}
});
}
}