SciChart iOS 3D supports selection of a data point. This example demonstrates selection functionality on the Scatter Point 3D Chart.

How to use example!
To select a scatter point, please tap on one. Tapping on several points will allow you to select multiple points. To deselect, please tap on the already selected point again or long press on an empty place.

The selection functionality of points in 3D iOS graphs in SciChart is provided by SCIVertexSelectionModifier3D Modifier.

Please read more about selection and SCIVertexSelectionModifier3D in iOS SWIF and iOS Objective-C Charts with SciChart Component in our documentation.

// SelectScatterPoints3DChartView.m

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// SelectScatterPoints3DChartView.m 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.
//******************************************************************************

#import "SelectScatterPoints3DChartView.h"
#import "SCDDataManager.h"

@implementation SelectScatterPoints3DChartView

- (Class)associatedType { return SCIChartSurface3D.class; }

- (void)initExample {
    SCINumericAxis3D *xAxis = [SCINumericAxis3D new];
    xAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.1 max:0.1];
    SCINumericAxis3D *yAxis = [SCINumericAxis3D new];
    yAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.1 max:0.1];
    SCINumericAxis3D *zAxis = [SCINumericAxis3D new];
    zAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.1 max:0.1];
    
    SCIXyzDataSeries3D *ds = [[SCIXyzDataSeries3D alloc] initWithXType:SCIDataType_Double yType:SCIDataType_Double zType:SCIDataType_Double];
    for (int i = 0; i < 250; ++i) {
        double x = [SCDDataManager getGaussianRandomNumber:15 stdDev:1.5];
        double y = [SCDDataManager getGaussianRandomNumber:15 stdDev:1.5];
        double z = [SCDDataManager getGaussianRandomNumber:15 stdDev:1.5];
        
        [ds appendX:@(x) y:@(y) z:@(z)];
    }
    
    SCIEllipsePointMarker3D *pointMarker = [SCIEllipsePointMarker3D new];
    pointMarker.fillColor = 0xFF32CD32;
    pointMarker.size = 5.f;
    
    SCIScatterRenderableSeries3D *rSeries = [SCIScatterRenderableSeries3D new];
    rSeries.dataSeries = ds;
    rSeries.pointMarker = pointMarker;
    rSeries.metadataProvider = [[SCIDefaultSelectableMetadataProvider3D alloc] initWithRenderableSeriesType:SCIScatterRenderableSeries3D.class];
    
    [SCIUpdateSuspender usingWithSuspendable:self.surface withBlock:^{
        self.surface.xAxis = xAxis;
        self.surface.yAxis = yAxis;
        self.surface.zAxis = zAxis;
        [self.surface.renderableSeries add:rSeries];
        [self.surface.chartModifiers addAll:[SCIPinchZoomModifier3D new], [SCIVertexSelectionModifier3D new], [[SCIOrbitModifier3D alloc] initWithDefaultNumberOfTouches:2], nil];
    }];
}

@end

// SelectScatterPoints3DChartView.swift

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// SelectScatterPoints3DChartView.swift 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.
//******************************************************************************

class SelectScatterPoints3DChartView: SCDSingleChartViewController<SCIChartSurface3D> {
    
    override var associatedType: AnyClass { return SCIChartSurface3D.self }
    
    override func initExample() {
        let xAxis = SCINumericAxis3D()
        xAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
        let yAxis = SCINumericAxis3D()
        yAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
        let zAxis = SCINumericAxis3D()
        zAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
        
        let dataSeries = SCIXyzDataSeries3D(xType: .double, yType: .double, zType: .double)
        for _ in 0 ..< 250 {
            let x = SCDDataManager.getGaussianRandomNumber(5, stdDev: 1.5)
            let y = SCDDataManager.getGaussianRandomNumber(5, stdDev: 1.5)
            let z = SCDDataManager.getGaussianRandomNumber(5, stdDev: 1.5)
            dataSeries.append(x: x, y: y, z: z)
        }
        
        let pointMarker = SCIEllipsePointMarker3D()
        pointMarker.fillColor = 0xFF32CD32
        pointMarker.size = 5.0
        
        let rSeries = SCIScatterRenderableSeries3D()
        rSeries.dataSeries = dataSeries
        rSeries.pointMarker = pointMarker
        rSeries.metadataProvider = SCIDefaultSelectableMetadataProvider3D(renderableSeriesType: SCIScatterRenderableSeries3D.self)
        
        SCIUpdateSuspender.usingWith(surface) {
            self.surface.xAxis = xAxis
            self.surface.yAxis = yAxis
            self.surface.zAxis = zAxis
            self.surface.renderableSeries.add(rSeries)
            self.surface.chartModifiers.add(items: SCIPinchZoomModifier3D(), SCIVertexSelectionModifier3D(), SCIOrbitModifier3D(defaultNumberOfTouches: 2))
        }
    }
}

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