The smoothing algorithms for mountain charts in for Android applications is often used to show the smoothed data, when the raw data is too much to be displayed on a screen. It is important that the charts are easy to read, and the data displayed provides meaningful insides to the trends. That is why spline series and smoothing the charts are commonly used in Android mobile applications. The android spline mountain series will give the charts its slick look, so that the customers can have a great user experience with your android applications.

This example demonstrates how to create a Spline Mountain Series for Android applications in Java using SplineMountainRenderableSeries type. The Spline Mountain series API is very flexible and allows you to specify area brush and stroke pen to apply the colors you need. You can also render a gap in series and add point markers onto it.

Read more in the SciChart Android Spline Mountain Series documentation.

Also see: Spline Band Series and Spline Line series.

// 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>

// SplineMountainChartFragment.java

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2020. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// SplineMountainChartFragment.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.SplineMountainRenderableSeries;
import com.scichart.core.framework.UpdateSuspender;
import com.scichart.examples.R;
import com.scichart.examples.fragments.base.ExampleBaseFragment;

import java.util.Collections;

import butterknife.BindView;

public class SplineMountainChartFragment 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(0d, 0.2d).build();

        final IXyDataSeries<Integer, Integer> dataSeries = sciChartBuilder.newXyDataSeries(Integer.class, Integer.class).build();
        final int[] yValues = {50, 35, 61, 58, 50, 50, 40, 53, 55, 23, 45, 12, 59, 60};
        for (int i = 0; i < yValues.length; i++) {
            dataSeries.append(i, yValues[i]);
        }

        final SplineMountainRenderableSeries rSeries = sciChartBuilder.newSplineMountainSeries()
                .withDataSeries(dataSeries)
                .withStrokeStyle(0xAAFFC9A8, 1f, true)
                .withAreaFillLinearGradientColors(0xAAFF8D42, 0x88090E11)
                .withPointMarker(sciChartBuilder.newPointMarker(new EllipsePointMarker()).withSize(7, 7).withStroke(0xFF006400, 1).withFill(0xFFFFFFFF).build())
                .build();

        UpdateSuspender.using(surface, () -> {
            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();
        });
    }
}

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