Updating a Line

[Don22Trader1]

Hello,

I would like to know if its possible how to update a line that has been drawn on screen.

e.g. Draw.Line(this, "FirstUpLine", false, 5, Low[5], 1, High[1], Brushes.DodgerBlue, DashStyleHelper.Solid, 4);

When certain conditions are met, this line is drawn as seen in the attached photo. What I would like to do is when a Higher High appears, I want the end anchor point to keep moving to the next high Which is Bar 7, then finally will end up into Bar 8.

[NinjaTrader_ChrisL]

Hello Don, thanks for writing in. You can save your Line object as a class member and change its Start and End Anchor points at a later time e.g.

        bool drawonce = false;
        NinjaTrader.NinjaScript.DrawingTools.Line myLine;
        protected override void OnBarUpdate()
        {
            if(State != State.Realtime)
                return;

            if(!drawonce)
            {
                myLine = Draw.Line(this, "tag1", 0, High[0], 10, High[10], Brushes.Red);
                drawonce = true;
            }
            else
            {
                myLine.StartAnchor.Price = High[0];
                myLine.StartAnchor.SlotIndex = CurrentBar;
            }

        }​