This example demonstrates how to create a Point-Cloud example with SciChart Xamarin.iOS and Xamarin.Android. This cart type is rendered with the help of Scatter Series, where the shapes of scatters is defined by the Point Markers.

See more in the SciChart Xamarin Tutorials and Documentation about the Scatter Series:
Creating a chart in Xamarin.Android
Creating a chart in Xamarin.iOS
The Scatter Chart type Android
The Scatter Chart Type iOS

// PointCloud3DChartViewController.cs (Xamarin.iOS)

using Xamarin.Examples.Demo.Data;
using SciChart.iOS.Charting;

namespace Xamarin.Examples.Demo.iOS
{
    [Example3DDefinition("Point Cloud 3D Chart", description: "Create a simple Point Cloud 3D Chart", icon: ExampleIcon.Scatter3D)]
    class PointCloud3DChartViewController : SingleChartViewController<SCIChartSurface3D>
    {
        protected override void InitExample()
        {
            var dataManager = DataManager.Instance;
            var dataSeries3D = new XyzDataSeries3D<double, double, double>();

            for (int i = 0; i < 10000; i++)
            {
                double x = dataManager.GetGaussianRandomNumber(5, 1.5);
                double y = dataManager.GetGaussianRandomNumber(5, 1.5);
                double z = dataManager.GetGaussianRandomNumber(5, 1.5);

                dataSeries3D.Append(x, y, z);
            }

            var rSeries3D = new SCIScatterRenderableSeries3D
            {
                DataSeries = dataSeries3D,
                PointMarker = new SCIEllipsePointMarker3D { FillColor = 0x77ADFF2F, Size = 3f },
            };

            using (Surface.SuspendUpdates())
            {
                Surface.XAxis = new SCINumericAxis3D { GrowBy = new SCIDoubleRange(0.1, 0.1) };
                Surface.YAxis = new SCINumericAxis3D { GrowBy = new SCIDoubleRange(0.1, 0.1) };
                Surface.ZAxis = new SCINumericAxis3D { GrowBy = new SCIDoubleRange(0.1, 0.1) };
                Surface.RenderableSeries.Add(rSeries3D);
                Surface.ChartModifiers.Add(CreateDefault3DModifiers());

                Surface.Camera = new SCICamera3D { Position = new SCIVector3(-350, 100, -350), Target = new SCIVector3(0, 50, 0) };
            }
        }
    }
}

// CreatePointCloud3DChartFragment.cs (Xamarin.Android)

using System.Drawing;
using SciChart.Charting3D.Common.Math;
using SciChart.Charting3D.Model;
using SciChart.Charting3D.Model.DataSeries.Xyz;
using SciChart.Charting3D.Modifiers;
using SciChart.Charting3D.Visuals;
using SciChart.Charting3D.Visuals.Axes;
using SciChart.Charting3D.Visuals.Camera;
using SciChart.Charting3D.Visuals.PointMarkers;
using SciChart.Charting3D.Visuals.RenderableSeries.Scatter;
using SciChart.Data.Model;
using Xamarin.Examples.Demo.Data;
using Xamarin.Examples.Demo;
using Xamarin.Examples.Demo.Droid.Fragments.Base;

namespace Xamarin.Examples.Demo.Droid.Fragments.Examples3D
{
    [Example3DDefinition("Simple Point Cloud 3D Chart", description: "Create a simple Point Cloud 3D Chart", icon: ExampleIcon.Scatter3D)]
    class CreatePointCloud3DChartFragment : ExampleBaseFragment
    {
        public SciChartSurface3D Surface => View.FindViewById<SciChartSurface3D>(Resource.Id.chart3d);

        public override int ExampleLayoutId => Resource.Layout.Example_Single_3D_Chart_Fragment;

        protected override void InitExample()
        {
            var dataManager = DataManager.Instance;

            var dataSeries3D = new XyzDataSeries3D<double, double, double>();

            for (int i = 0; i < 10000; i++)
            {
                double x = dataManager.GetGaussianRandomNumber(5, 1.5);
                double y = dataManager.GetGaussianRandomNumber(5, 1.5);
                double z = dataManager.GetGaussianRandomNumber(5, 1.5);

                dataSeries3D.Append(x, y, z);
            }

            var pointMarker3D = new EllipsePointMarker3D()
            {
                FillColor = Color.FromArgb(0x77, 0xAD, 0xFF, 0x2F),
                Size = 5f
            };

            var renderableSeries3D = new ScatterRenderableSeries3D()
            {
                PointMarker = pointMarker3D,
                DataSeries = dataSeries3D
            };

            using (Surface.SuspendUpdates())
            {
                Surface.XAxis = new NumericAxis3D() { GrowBy = new DoubleRange(0.1, 0.1) };
                Surface.YAxis = new NumericAxis3D() { GrowBy = new DoubleRange(0.1, 0.1) };
                Surface.ZAxis = new NumericAxis3D() { GrowBy = new DoubleRange(0.1, 0.1) };

                Surface.Camera = new Camera3D()
                {
                    Position = new Vector3(-350, 100, -350),
                    Target = new Vector3(0, 50, 0)
                };

                Surface.RenderableSeries.Add(renderableSeries3D);

                Surface.ChartModifiers = new ChartModifier3DCollection
                {
                    new PinchZoomModifier3D(),
                    new OrbitModifier3D(),
                    new ZoomExtentsModifier3D()
                };
            }
        }
    }
}

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