GannLevel

using cAlgo.API;

namespace cAlgo
{
    // This sample shows how to use a chart Gann Fan levels property to modify the gann levels
    public partial class GannLevelSample : Indicator
    {
        protected override void Initialize()
        {
            var gannFan = Chart.DrawGannFan("GannFan", Chart.FirstVisibleBarIndex, Bars.ClosePrices[Chart.FirstVisibleBarIndex], Chart.LastVisibleBarIndex, Bars.ClosePrices[Chart.LastVisibleBarIndex], Color.Blue);

            foreach (var level in gannFan.GannLevels)
            {
                Print(level.Ratio);

                if (level.Ratio > 4) level.IsVisible = false;
            }
        }

        public override void Calculate(int index)
        {
        }
    }
}

gannFan = api.Chart.DrawGannFan("GannFan", api.Chart.FirstVisibleBarIndex, api.Bars.ClosePrices[api.Chart.FirstVisibleBarIndex], api.Chart.LastVisibleBarIndex, api.Bars.ClosePrices[api.Chart.LastVisibleBarIndex], Color.Blue)
for level in gannFan.GannLevels:
    api.Print(level.Ratio)
    if level.Ratio > 4:
        level.IsVisible = False

{
  "AccessRights": "None",
  "TimeZone": "UTC",
  "IsOverlay": true
}