by Bart A in category Other at 03/08/2019

Syncronize timeframe between different charts. Support different chart groups.

Add this indicator to all the charts that you want to have the same timeframe. If you want to have more than one group, you should set the Group parameter.
When changing timeframe on one chart, all charts with the same group will be switched to the same timeframe.

Using the existing feature in cTrader to link charts by the symbol, you can setup workspace like this:

How to install
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Formula / Source Code
Language: C#
Trading Platform: cAlgocTrader
using System;
using cAlgo.API;
using cAlgo.API.Internals;
using cAlgo.API.Indicators;
using cAlgo.Indicators;
using System.Collections.Generic;

namespace cAlgo
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class TimeframeSync : Indicator
        [Parameter(DefaultValue = "Sync")]
        public string Group { get; set; }

        [Parameter("Show group name", DefaultValue = true)]
        public bool ShowGroupName { get; set; }

        protected override void Initialize()
            if (Group == null)

            CommonTimeframeProvider.InitChart(Group, this);

            if (ShowGroupName)
                Chart.DrawStaticText("syncGroupText", Group, VerticalAlignment.Top, HorizontalAlignment.Left, Chart.ColorSettings.ForegroundColor);

        public override void Calculate(int index)

    public static class CommonTimeframeProvider
        private static Dictionary<string, List<Indicator>> _groups = new Dictionary<string, List<Indicator>>();
        private static object _lock = new object();

        public static void InitChart(string @group, Indicator indicator)
            lock (_lock)
                List<Indicator> indicators;

                if (!_groups.TryGetValue(@group, out indicators))
                    indicators = new List<Indicator>();
                    _groups[@group] = indicators;

                var charts = indicators.ToArray();
                var timeframe = indicator.TimeFrame;

                foreach (var anotherIndicator in charts)
                    if (timeframe != anotherIndicator.TimeFrame)
                        anotherIndicator.BeginInvokeOnMainThread(() => anotherIndicator.Chart.TryChangeTimeFrame(timeframe));