Generates a simple iOS Candlestick chart in code. See Documentation on how to use this type here: The iOS Candlestick Chart Documentation.

SciChart’s iOS Candlestick Charts are high performance, and suitable for use in real-time trading systems, even in demanding, fast moving markets.

The SCIFastCandlestickRenderableSeries requires a SCIOhlcDataSeries, which contains one X-point and four Y-points (Open, High, Low, Close).

Candles are drawn using the UpWick, DownWick, UpBody and DownBody colors, which are used depending on whether Open > Close or not.

// CandlestickChartView.m

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// CandlestickChartView.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 "CandlestickChartView.h"
#import "SCDDataManager.h"

@implementation CandlestickChartView

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

- (void)initExample {
    SCDPriceSeries *priceSeries = [SCDDataManager getPriceDataIndu];
    NSInteger count = priceSeries.count;
    
    id<ISCIAxis> xAxis = [SCICategoryDateAxis new];
    xAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.0 max:0.1];
    xAxis.visibleRange = [[SCIDoubleRange alloc] initWithMin:count - 30 max:count];
    
    id<ISCIAxis> yAxis = [SCINumericAxis new];
    yAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.0 max:0.1];
    yAxis.autoRange = SCIAutoRange_Always;
    
    SCIOhlcDataSeries *dataSeries = [[SCIOhlcDataSeries alloc] initWithXType:SCIDataType_Date yType:SCIDataType_Double];
    [dataSeries appendValuesX:priceSeries.dateData open:priceSeries.openData high:priceSeries.highData low:priceSeries.lowData close:priceSeries.closeData];
    
    SCIFastCandlestickRenderableSeries *rSeries = [SCIFastCandlestickRenderableSeries new];
    rSeries.dataSeries = dataSeries;
    rSeries.strokeUpStyle = [[SCISolidPenStyle alloc] initWithColorCode:0xFF00AA00 thickness:1];
    rSeries.fillUpBrushStyle = [[SCISolidBrushStyle alloc] initWithColorCode:0x9000AA00];
    rSeries.strokeDownStyle = [[SCISolidPenStyle alloc] initWithColorCode:0xFFFF0000 thickness:1];
    rSeries.fillDownBrushStyle = [[SCISolidBrushStyle alloc] initWithColorCode:0x90FF0000];
    
    [SCIUpdateSuspender usingWithSuspendable:self.surface withBlock:^{
        [self.surface.xAxes add:xAxis];
        [self.surface.yAxes add:yAxis];
        [self.surface.renderableSeries add:rSeries];
        [self.surface.chartModifiers add:[SCDExampleBaseViewController createDefaultModifiers]];

        [SCIAnimations waveSeries:rSeries duration:3.0 andEasingFunction:[SCICubicEase new]];
    }];
}

@end

// CandlestickChartView.swift

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// CandlestickChartView.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 CandlestickChartView: SCDSingleChartViewController<SCIChartSurface> {
    
    override var associatedType: AnyClass { return SCIChartSurface.self }
    
    override func initExample() {
        let SCDPriceSeries = SCDDataManager.getPriceDataIndu()
        let size = Double(SCDPriceSeries.count)
        
        let xAxis = SCICategoryDateAxis()
        xAxis.growBy = SCIDoubleRange(min: 0, max: 0.1)
        xAxis.visibleRange = SCIDoubleRange(min: size - 30, max: size)
        
        let yAxis = SCINumericAxis()
        yAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
        yAxis.autoRange = .always
        
        let dataSeries = SCIOhlcDataSeries(xType: .date, yType: .double)
        dataSeries.append(x: SCDPriceSeries.dateData, open: SCDPriceSeries.openData, high: SCDPriceSeries.highData, low: SCDPriceSeries.lowData, close: SCDPriceSeries.closeData)
        
        let rSeries = SCIFastCandlestickRenderableSeries()
        rSeries.dataSeries = dataSeries
        rSeries.strokeUpStyle = SCISolidPenStyle(color: 0xFF00AA00, thickness: 1.0)
        rSeries.fillUpBrushStyle = SCISolidBrushStyle(color: 0x9000AA00)
        rSeries.strokeDownStyle = SCISolidPenStyle(color: 0xFFFF0000, thickness: 1.0)
        rSeries.fillDownBrushStyle = SCISolidBrushStyle(color: 0x90FF0000)
        
        SCIUpdateSuspender.usingWith(surface) {
            self.surface.xAxes.add(xAxis)
            self.surface.yAxes.add(yAxis)
            self.surface.renderableSeries.add(rSeries)
            self.surface.chartModifiers.add(SCDExampleBaseViewController.createDefaultModifiers())
            
            SCIAnimations.wave(rSeries, duration: 3.0, andEasingFunction: SCICubicEase())
        }
    }
}

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